1
FEATURES
DESCRIPTION
APPLICATIONS
VI
GND
EN
SW
FB
C3
4.7 Fm
L1
4.7 Hm
C4
10 Fm
TPS62220
VI
2.5Vto6V
VO
1.5V/400mA
R1
360kW
R2
180kW
C1
22pF
C2
100pF
1
2
3
5
4
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
VO=1.8V,
L =4.7 H,m
CO=22 Fm
Efficency − %
IL− LoadCurrent − mA
VI=3.7V
Typical Application(AdjustibleOutputVoltageVersion)
VI=5V
VI=2.7V
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
400-mA, 1.25-MHz, HIGH-EFFICIENCY, STEP-DOWN CONVERTER IN THIN-SOT23
2
•High-Efficiency Synchronous Step-DownConverter With up to 95% Efficiency
The TPS6222x devices are a family of high-efficiency,synchronous step-down converters ideally suited for•2.5-V to 6-V Input Voltage Range
portable systems powered by 1-cell Li-Ion or 3-cell•Adjustable Output Voltage Range From 0.7 V
NiMH/NiCd batteries. The devices are also suitable toto V
I
operate from a standard 3.3-V or 5-V voltage rail.•Fixed Output Voltage Options Available
With an output voltage range of 6 V down to 0.7 V•Up to 400-mA Output Current
and up to 400-mA output current, the devices are•1.25-MHz Fixed Frequency PWM Operation
ideal for powering the low voltage TMS320™ DSPfamily and processors used in PDAs, pocket PCs,•Highest Efficiency Over Wide Load Current
and smart phones. Under nominal load current, theRange Due to Power-Save Mode
devices operate with a fixed switching frequency of•15 µA Typical Quiescent Current
typically 1.25 MHz. At light load currents, the part•Soft Start
enters the power-save mode operation; the switchingfrequency is reduced and the quiescent current is•100% Duty Cycle Low-Dropout Operation
typically only 15 µA; therefore, the device achieves•Dynamic Output-Voltage Positioning
the highest efficiency over the entire load current•Available in TSOT23 Package
range. The TPS6222x needs only three smallexternal components. Together with the tiny TSOT23package, a minimum system solution size can beachieved. An advanced fast response voltage mode•PDAs and Pocket PC
control scheme achieves superior line and load•Cellular Phones, Smart Phones
regulation with small ceramic input and output•OMAP™ and Low Power DSP Supply
capacitors.•Digital Cameras•Portable Media Players•Portable Equipment•WLAN PC Cards
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2OMAP, TMS320 are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003 – 2009, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.
ABSOLUTE MAXIMUM RATINGS
DISSIPATION RATING TABLE
(1)
RECOMMENDED OPERATING CONDITIONS
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foamduring storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
(1)
T
A
OUTPUT VOLTAGE THIN-SOT23 PACKAGE SYMBOL
Adjustable TPS62220DDC ALN1.2 V TPS62227DDC BRZ1.5 V TPS62221DDC ALO1.6 V TPS62224DDC ALQ-40 ° C to 85 ° C 1.7 V TPS62229DDC EJ1.8 V TPS62222DDC APP1.875 V TPS62228DDC EH2.2 V TPS62225DDC NXY2.3 V TPS62223DDC ALX
(1) The DDC package is available in tape and reel. Add R suffix (TPS62220DDCR) to order quantities of 3000 parts. Add T suffix(TPS62220DDCT) to order quantities of 250 parts.
over operating free-air temperature (unless otherwise noted)
(1)
TPS6222x UNIT
V
I
Supply voltage on pin
(2)
-0.3 to 7.0 VVoltages on pins SW, EN, FB
(2)
-0.3 to V
I
+0.3 VP
D
Continuous power dissipation See Dissipation Rating TableT
J
Operating junction temperature range -40 to 150 ° CT
stg
Storage temperature -65 to 150 ° CLead temperature (soldering, 10 sec) 260 ° C
(1) Stresses beyond those listed under " absolute maximum ratings ” may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under " recommended operatingconditions ” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2) All voltage values are with respect to network ground terminal.
T
A
≤25 ° C DERATING FACTOR T
A
= 70 ° C T
A
= 85 ° CPACKAGE
POWER RATING ABOVE T
A
= 25 ° C POWER RATING POWER RATING
DDC 400 mW 4 mW/ ° C 220 mW 160 mW
(1) The thermal resistance junction to ambient of the 5-pin Thin-SOT23 is 250 ＝C/W.
MIN NOM MAX UNIT
V
I
Supply voltage 2.5 6 VV
O
Output voltage range for adjustable output voltage version 0.7 V
I
VI
O
Output current 400 mAL Inductor
(1)
4.7 µHC
I
Input capacitor
(1)
4.7 µFT
A
Operating ambient temperature -40 85 ° CT
J
Operating junction temperature -40 125 ° C
(1) See the application section for further information
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ELECTRICAL CHARACTERISTICS
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
V
I
= 3.6 V, V
O
= 1.8 V, I
O
= 200 mA, EN = VIN, T
A
= -40 ° C to 85 ° C, typical values are at T
A
= 25 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
V
I
Input voltage range 2.5 6 VI
Q
Operating quiescent current I
O
= 0 mA, Device is not switching 15 25 µAShutdown supply current EN = GND 0.1 1 µAUndervoltage lockout threshold 1.5 2 V
ENABLE
EN high level input voltage 1.3 VV
(EN)
EN low level input voltage 0.4 VI
(EN)
EN input bias current EN = GND or VIN 0.01 0.1 µA
POWER SWITCH
V
I
= V
GS
= 3.6 V 530 670P-channel MOSFET on-resistance m ΩV
I
= V
GS
= 2.5 V 670 850r
DS(on)
V
I
= V
GS
= 3.6 V 430 540N-channel MOSFET on-resistance m ΩV
I
= V
GS
= 2.5 V 530 660P-channel leakage current V
DS
= 6 V 0.1 1 µAI
lkg
N-channel leakage current V
DS
= 6 V 0.1 1 µAI
(LIM)
P-channel current limit 2.5 V < V
I
< 6 V 600 670 880 mA
OSCILLATOR
f
S
Switching frequency 0.8 1.25 1.85 MHz
OUTPUT
I
O
Output current 400 mAAdjustable output voltageV
O
TPS62220 0.7 V
IN
VrangeV
ref
Reference voltage 500 mVV
I
= 3.6 V to 6 V, I
O
= 0 mA 0% 3%TPS62220Feedback voltage, See
(1)
Adjustable
V
I
= 3.6 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.7 V to 6 V, I
O
= 0 mA 0% 3%TPS62227
1.2 V
V
I
= 2.7 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.5 V to 6 V, I
O
= 0 mA 0% 3%TPS62221
1.5 V
V
I
= 2.5 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.5 V to 6 V, I
O
= 0 mA 0% 3%TPS62224
1.6 V
V
I
= 2.5 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.5 V to 6 V, I
O
= 0 mA 0% 3%TPS62229
1.7 V
V
I
= 2.5 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
O
Fixed output voltage
V
I
= 2.5 V to 6 V, I
O
= 0 mA 0% 3%TPS62222
1.8 V
V
I
= 2.5 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.5 V to 6 V, I
O
= 0 mA 0% 3%TPS62228
1.875 V
V
I
= 2.5 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.7 V to 6 V, I
O
= 0 mA 0% 3%TPS62225
2.2 V
V
I
= 2.7 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%V
I
= 2.7 V to 6 V, I
O
= 0 mA 0% 3%TPS62223
2.3 V
V
I
= 2.7 V to 6 V, 0 mA ≤I
O
≤400 mA -3% 3%
(1) For output voltages ≤1.2 V, a 22 µF output capacitor value is required to achieve a maximum output voltage accuracy of 3% whileoperating in power-save mode (PFM mode). For output voltages ≥2 V, an inductor of 10 µH and an output capacitor of ≥10 µF isrecommended. See the Application Information section for external components.
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Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
PIN ASSIGNMENTS
3
2
4
5
1
VI
GND
EN
SW
FB
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
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ELECTRICAL CHARACTERISTICS (continued)V
I
= 3.6 V, V
O
= 1.8 V, I
O
= 200 mA, EN = VIN, T
A
= -40 ° C to 85 ° C, typical values are at T
A
= 25 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Line regulation V
I
= 2.5 V to 6 V, I
O
= 10 mA 0.26 %/VLoad regulation I
O
= 100 mA to 400 mA 0.0014 %/mALeakage current into SW pin V
I
> V
O
, 0 V ≤V
(SW)
≤V
I
0.1 1 µAI
lkg
Reverse leakage current into pin SW V
I
= open, EN = GND, V
(SW)
= 6 V 0.1 1 µA
DDC PACKAGE
(TOP VIEW)
Pin Functions
PIN
I/O DESCRIPTIONNAME NO.
EN 3 I This is the enable pin of the device. Pulling this pin to ground forces the device into shutdown mode.Pulling this pin to Vin enables the device. This pin must be terminated.FB 4 I This is the feedback pin of the device. Connect this pin directly to the output if the fixed output voltageversion is used. For the adjustable version, an external resistor divider is connected to this pin. Theinternal voltage divider is disabled for the adjustable version.GND 2 GroundSW 5 I/O Connect the inductor to this pin. This pin is the switch pin and is connected to the internal MOSFETswitches.V
I
1 I Supply voltage pin
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_
+
_
+
_
+
_
+
_
+
REF
REF
Load Comparator
Skip Comparator
Current Limit Comparator
P-Channel
Power MOSFET
Driver
Shoot-Through
Logic
Control
Logic
Soft Start
1.25 MHz
Oscillator
Comparator S
R
N-Channel
Power MOSFET
Comparator High
Comparator Low
Comparator Low 2
V(COMP)
Sawtooth
Generator
VI
Undervoltage
Lockout
Bias Supply
_
+
Comparator High
Comparator Low
Comparator Low 2
Compensation
VREF = 0.5 V
R2
See Note
R1
VI
EN
SW
FB GND
Gm
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
FUNCTIONAL BLOCK DIAGRAM
NOTE: For the adjustable version (TPS62220) the internal feedback divider is disabled, and the FB pin is directly connectedto the internal GM amplifier
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TYPICAL CHARACTERISTICS
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
VO = 3.3 V,
L = 4.7 µH,
CO = 10 µF
VI = 3.7 V
VI = 5 V
Efficency - %
IL - Load Current - mA
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
VO = 1.8 V,
L = 4.7 µH,
CO = 22 µF
VI = 2.7 V
VI = 5 V
Efficency - %
IL - Load Current - mA
VI = 3.7 V
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
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Table of Graphs
FIGURE
Figure 1 ,vs Load current Figure 2 ,ηEfficiency
Figure 3vs Input voltage Figure 4I
Q
No load quiescent current vs Input voltage Figure 5f
s
Switching frequency vs Temperature Figure 6V
o
Output voltage vs Output current Figure 7r
ds(on)
- P-channel switch, vs Input voltage Figure 8r
ds(on)
r
ds(on)
- N-Channel rectifier switch vs Input voltage Figure 9Load transient response Figure 10PWM mode operation Figure 11Power-save mode operation Figure 12Start-up Figure 13
EFFICIENCY EFFICIENCYvs vsLOAD CURRENT LOAD CURRENT
Figure 1. Figure 2.
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70
75
80
85
90
95
100
2.5 3 3.5 4 4.5 5 5.5 6
VO = 1.8 V,
L = 4.7 µH,
CO = 22 µF
IL = 150 mA
IL = 300 mA
Efficiency − %
VI − Input Voltage − V
IL = 1 mA
40
45
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
VO = 1.5 V,
L = 4.7 µH,
CO = 10 µF
VI = 2.7 V
VI = 5 V
Efficency - %
IL - Load Current - mA
VI = 3.7 V
0
5
10
15
20
25
2.5 3 3.5 4 4.5 5 5.5 6
TA = 85°C
TA = 25°C
TA = −40°C
N0 Load Quiescent Current −
VI − Input Voltage − V
Aµ
1130
1140
1150
1160
1170
1180
1190
−40 −30 −20 −10 0 10 20 30 40 50 60 70 80
TA − Temperature − °C
VI = 3.6 V
VI = 6 V
VI = 2.5 V
f − Switching Frequency − kHz
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
EFFICIENCY EFFICIENCYvs vsLOAD CURRENT INPUT VOLTAGE
Figure 3. Figure 4.
NO LOAD QUIESCENT CURRENT SWITCHING FREQUENCYvs vsINPUT VOLTAGE TEMPERATURE
Figure 5. Figure 6.
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0.2
0.3
0.4
0.5
0.6
0.7
0.8
2.5 3 3.5 4 4.5 5 5.5 6
TA = 85°C
TA = 25°C
TA = -40°C
VI - Input Voltage - V
rds(on) Ω- P-Channel Switch -
1.45
1.47
1.49
1.51
1.53
1.55
0 50 100 150 200 250 300
− Outrput Voltage − VVO
IO − Output Current − mA
PFM Mode
PWM Mode
VO
100 mV/div
IL
200 mA/div
VI = 3.6 V, VO = 1.5 V, L = 4.7 µH,
CO =10 µF, Load Step 50 mA to 390 mA
transient
200 µs/div
0.2
0.3
0.4
0.5
0.6
0.7
0.8
2.5 3 3.5 4 4.5 5 5.5 6
TA = 85°C
TA = 25°C
TA = −40°C
VI − Input Voltage − V
rDS(on) ΩN-Channel Switch —
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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OUTPUT VOLTAGE r
ds(on)
P-CHANNEL SWITCHvs vsOUTPUT CURRENT INPUT VOLTAGE
Figure 7. Figure 8.
r
ds(on)
N-CHANNEL SWITCH
vsINPUT VOLTAGE LOAD TRANSIENT RESPONSE
Figure 9. Figure 10.
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VSW
5 V/div
VO
20 mV/div
IL
200 mA/div VI = 3.6 V,
VO = 1.5 V,
IO = 400 mA
250 ns/div
VI = 3.6 V,
VO = 1.5 V
VSW,
5 V/div
VO,
20 mV/div
IL,
200 mA/div
5 µs/div
Enable
2 V/div
VO
1 V/div
Ii
200 mA/div
START-UP
250 µs/div
VI = 3.6 V,
VO = 1.5 V,
IO = 380 mA
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
PWM MODE OPERATION POWER-SAVE MODE OPERATION
Figure 11. Figure 12.
Figure 13.
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DETAILED DESCRIPTION
OPERATION
POWER-SAVE MODE OPERATION
Iskip v66 mA )Vin
160 W
Ipeak +66 mA )Vin
80 W
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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The TPS6222x is a synchronous step-down converter operating with typically 1.25-MHz fixed frequency pulsewidth modulation (PWM) at moderate to heavy load currents and in power-save mode operating with pulsefrequency modulation (PFM) at light load currents.
During PWM operation, the converter uses a unique fast response, voltage mode, controller scheme with inputvoltage feed forward. This achieves good line and load regulation and allows the use of small ceramic input andoutput capacitors. At the beginning of each clock cycle initiated by the clock signal (S), the P-channel MOSFETswitch is turned on, and the inductor current ramps up until the comparator trips and the control logic turns off theswitch. The current limit comparator also turns off the switch in case the current limit of the P-channel switch isexceeded. Then, the N-channel rectifier switch is turned on and the inductor current ramps down. The next cycleis initiated by the clock signal, again turning off the N-channel rectifier and turning on the P-channel switch.
The GM amplifier and input voltage determines the rise time of the sawtooth generator; therefore, any change ininput voltage or output voltage directly controls the duty cycle of the converter. This gives a very good line andload transient regulation.
As the load current decreases, the converter enters the power-save mode operation. During power-save mode,the converter operates with reduced switching frequency in PFM mode and with a minimum quiescent current tomaintain high efficiency. Two conditions allow the converter to enter the power-save mode operation. One iswhen the converter detects discontinuous conduction mode. The other is when the peak switch current in theP-channel switch goes below the skip current limit. The typical skip current limit can be calculated as:
During the power-save mode, the output voltage is monitored with the comparator (comp) by the thresholdscomp low and comp high. As the output voltage falls below the comp low threshold set to 0.8% typical aboveVout, the P-channel switch turns on. The P-channel switch is turned off as the peak switch current is reached.The typical peak switch current can be calculated:
The N-channel rectifier is turned on and the inductor current ramps down. As the inductor current approacheszero, the N-channel rectifier is turned off and the P-channel switch is turned on again, starting the next pulse.The converter continues these pulses until the comp high threshold (set to typically 1.6% above Vout) is reached.The converter enters a sleep mode, reducing the quiescent current to a minimum. The converter wakes up againas the output voltage falls below the comp low threshold. This control method reduces the quiescent currenttypically to 15 µA and reduces the switching frequency to a minimum, thereby achieving high converter efficiencyat light load. Setting the skip current thresholds to typically 0.8% and 1.6% above the nominal output voltage atlight load current results in a dynamic output voltage achieving lower absolute voltage drops during heavy loadtransient changes. This allows the converter to operate with a small output capacitor of just 10 µF and still have alow absolute voltage drop during heavy load transient changes. See Figure 14 for detailed operation of thepower-save mode.
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PFM Mode at Light Load Comparator High
Comparator Low
Comparator Low 2
PWM Mode at Medium to Full Load
1.6%
0.8%
VO
DYNAMIC VOLTAGE POSITIONING
DIGITAL SELF-CALIBRATION
SOFT START
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
Figure 14. Power-Save Mode Thresholds and Dynamic Voltage Positioning
The converter enters the fixed frequency PWM mode again as soon as the output voltage falls below the complow 2 threshold.
As described in the power-save mode operation sections and as detailed in Figure 14 , the output voltage istypically 0.8% above the nominal output voltage at light load currents, as the device is in power-save mode. Thisgives additional headroom for the voltage drop during a load transient from light load to full load. During a loadtransient from full load to light load, the voltage overshoot is also minimized due to active regulation by turning onthe N-channel rectifier switch.
In addition to the control circuit as shown in the block diagram, the TPS6222x series uses an internal digitalself-calibration of the output voltage to minimize DC load and line regulation. This method of self-calibrationallows simple internal loop compensation without the use of external components. The device monitors theoutput voltage and as soon as the output voltage drops below typically 1.6% or exceeds typically 1.6% of Voutthe duty cycle will be adjusted in digital steps. As a result, the output voltage changes in digital steps either up ordown where one step is typically 1% of Vout. This results in virtually zero line and load regulation and keeps theoutput voltage tolerance within ± 3% overload and line variations.
The TPS6222x has an internal soft-start circuit that limits the inrush current during start-up. This preventspossible voltage drops of the input voltage in case a battery or a high impedance power source is connected tothe input of the TPS6222x. The soft start is implemented as a digital circuit increasing the switch current in stepsof typically 83 mA, 167 mA, 335 mA and then the typical switch current limit of 670 mA. Therefore, the start-uptime mainly depends on the output capacitor and load current.
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LOW DROPOUT OPERATION 100% DUTY CYCLE
V min=V max+I maxxr max+R
I O O DS(on) L
()
ENABLE
UNDERVOLTAGE LOCKOUT
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
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The TPS6222x offers a low input to output voltage difference, while still maintaining operation with the 100% dutycycle mode. In this mode, the P-channel switch is constantly turned on. This is particularly useful inbattery-powered applications to achieve longest operation time by taking full advantage of the whole batteryvoltage range. The minimum input voltage to maintain regulation, depending on the load current and outputvoltage, can be calculated as:
where:
•I
O, max
= maximum output current plus indicator ripple current•r
DS(on), max
= maximum P-channel switch r
DS(on)•R
L
= dc resistance of the inductor•V
O, max
= normal output voltage plus maximum output voltage tolerance
Pulling the enable low forces the part into shutdown, with a shutdown quiescent current of typically 0.1 µA. In thismode, the P-channel switch and N-channel rectifier are turned off, the internal resistor feedback divider isdisconnected, and the whole device is in shutdown mode. If an output voltage, which could be an externalvoltage source or super capacitor, is present during shutdown, the reverse leakage current is specified underelectrical characteristics. For proper operation, the enable pin must be terminated and must not be left floating.
Pulling the enable high starts up the TPS6222x with the soft start as previously described.
The undervoltage lockout circuit prevents the device from misoperation at low input voltages. It prevents theconverter from turning on the switch or rectifier MOSFET under undefined conditions.
12 Submit Documentation Feedback Copyright © 2003 – 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
APPLICATION INFORMATION
OUTPUT FILTER DESIGN (INDUCTOR AND OUTPUT CAPACITOR)
Fixed Output Voltage Version
ƒc+1
2p L CO
Ǹ+1
2p 10 mH 10 mF
Ǹ+15.9 kHz
with L = 10 µH, CO = 10 µF
Adjustable Output Voltage Version
Vout +0.5 V ǒ1)R1
R2Ǔ
C1 +1
2 p ƒZ R1 +1
2 p 22 kHz R1
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
www.ti.com
....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
The TPS6222x series of step-down converter has internal loop compensation. Therefore, the external L-C filterhas to be selected to work with the internal compensation. This is especially important for the fixed outputvoltage version. The adjustable output voltage version allows external capacitors across the feedback dividerresistors. This allows higher flexibility of the output filter selection when using the adjustable output voltagedevice TPS62220.
The internal compensation is optimized to operate with an output filter of L = 10 µH and C
O
= 10 µF. Such anoutput filter has its corner frequency at:
As a general rule of thumb, the product L × C should not move over a wide range when selecting a different outputfilter. This is because the internal compensation is designed to work with a certain output filter corner frequencyas calculated above. This is especially important when selecting smaller inductor or capacitor values that movethe corner frequency to higher frequencies. However, when selecting the output filter a low limit for the inductorvalue exists due to other internal circuit limitations. For the TPS6222x series the minimum inductor value shouldbe kept at 4.7 µH. Selecting a larger output capacitor value is less critical because the corner frequency moves tolower frequencies causing fewer stability problems. The possible output filter combinations are listed in Table 1 :
Table 1. Output Filter Combinations for Fixed Output Voltage Versions
V
O
L C
O
≤2 V 4.7 µH≥22 µF (ceramic capacitor)
≤2 V 6.8 µH≥22 µF (ceramic capacitor)
≤2 V 10 µH≥10 µF (ceramic capacitor)> 2 V 10 µH 10 µF (ceramic capacitor)
When the adjustable output voltage version TPS62220 is used, the output voltage is set by the external resistordivider. See Figure 15 .
The output voltage is calculated as
with R1 + R2 ≤1 M Ωand internal reference voltage V
ref,typ
= 0.5 V
For stability, R1 + R2 should not be greater than 1 M Ω. To keep the operating quiescent current to a minimum,the feedback resistor divider should have high impedance with R1 + R2 ≤1 M Ω. In general, for the adjustableoutput voltage version, the same stability considerations are valid as for the fixed output voltage version.Because the adjustable output voltage version uses an external feedback divider, it is possible to adjust the loopgain using external capacitors across the feedback resistors. This allows a wider selection of possible output filtercomponents. This is shown in Figure 16. R1 and C1 places a zero in the loop and R2 and C2 places a pole inthe loop. The zero is calculated as:
with R1 = upper resistor of voltage divider, C1 = upper capacitor of voltage divider
Copyright © 2003 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 13
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
C2 +1
2 p ƒP R2 +1
2 p 8 kHz R2
VI
GND
EN
SW
FB
C3
4.7 µF
L1
4.7 µH
C4
10 µF
TPS62220
VI
2.5 V − 6 V VO
1.8 V / 400 mA
R1
470k
R2
180k
C1
15 pF
C2
100 pF
INDUCTOR SELECTION
DI =V x
L O I max=I max+
L O
1-
VO
DIL
VI
2
L xf
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
www.ti.com
The pole is calculated as:
with R2 = lower resistor of voltage divider and C2 = lower capacitor of voltage divider.
For an output filter combination of L = 4.7 µH and C
O
= 10 µF, C1 and C2 must be selected to place a zero at 22kHz, and a pole at 8 kHz. Choose components close to the calculated values.
Table 2. Compensation Selection
L C
O
f
Z
f
P
4.7 µH 10 µF, 22 µF 22 kHz 8 kHz
Figure 15. Typical Application Circuit for the TPS62220 With Adjustable Output Voltage
For high efficiencies, the inductor should have a low dc resistance to minimize conduction losses. Especially athigh-switching frequencies the core material has a higher impact on efficiency. When using small chip inductors,the efficiency is reduced mainly due to higher inductor core losses. This needs to be considered when selectingthe appropriate inductor. The inductor value determines the inductor ripple current. The larger the inductor value,the smaller the inductor ripple current and the lower the conduction losses of the converter. Conversely, largerinductor values cause a slower load transient response. To avoid saturation of the inductor, the inductor shouldbe rated at least for the maximum output current of the converter plus the inductor ripple current that iscalculated as:
where:
•f = switching frequency (1.25-MHz typical, 800-kHz minimal)•L = inductor value•ΔI
L
= peak-to-peak inductor ripple current•I
L,max
= maximum inductor current
The highest inductor current occurs at maximum Vin. A more conservative approach is to select the inductorcurrent rating just for the maximum switch current of 880 mA. SeeTable 3 for inductor selection.
14 Submit Documentation Feedback Copyright © 2003 – 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
INPUT CAPACITOR SELECTION
OUTPUT CAPACITOR SELECTION
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
www.ti.com
....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
Table 3. Inductor Selection
INDUCTOR VALUE COMPONENT SUPPLIER DIMENSIONS
4.7 µH Sumida CDRH2D18/LD 4R7 3,2 mm × 3,2 mm × 2, 0 mm4.7 µH Murata LQH3C4R7M24 3,2 mm × 2,5 mm × 2, 0 mm4.7 µH Taiyo Yuden LBC2518 4R7 2,5 mm × 1,8 mm × 1,8 mm4.7 µH Sumida CMD4D11 4R7 4,4 mm × 5,8 mm × 1,2 mm4.7 µH Sumida CMD4D08 4R7 6,3 mm × 5,8 mm × 1, 0 mm4.7 µH Sumida CLSD09 4R7 4,9 mm × 4,9 mm × 1, 0 mm4.7 µH TDK VLF3010AT 4R7 2,8 mm × 2,6 mm × 1, 0 mm6.8 µH Sumida CDRH3D16 6R8 4,0 mm × 4,0 mm × 1,8 mm6.8 µH Sumida CMD4D11 4R7 4,0 mm × 5,8 mm × 1,2 mm10 µH Murata LQH4C100K04 4,5 mm × 3,2 mm × 2, 6 mm10 µH Sumida CDRH3D16 100 4,0 mm × 4,0 mm × 1,8 mm10 µH Sumida CLS4D14 100 4,9 mm × 4,9 mm × 1,5 mm
Because buck converters have a pulsating input current, a low ESR input capacitor is required. This results in thebest input voltage filtering, minimizing the interference with other circuits caused by high input voltage spikes.Also, the input capacitor must be sufficiently large to stabilize the input voltage during heavy load transients. Forgood input voltage filtering, usually a 4.7 µF input capacitor is sufficient. It can be increased without any limit forbetter input-voltage filtering. Ceramic capacitors show better performance because of the low ESR value, andthey are less sensitive against voltage transients and spikes compared to tantalum capacitors. Place the inputcapacitor as close as possible to the input and GND pin of the device for best performance (see Table 4 forcapacitor selection).
The advanced fast response voltage mode control scheme of the TPS6222x allows the use of tiny ceramiccapacitors with a minimum value of 10 µF without having large output voltage under and overshoots duringheavy load transients. Ceramic capacitors with low ESR values have the lowest output voltage ripple and arerecommended. If required, tantalum capacitors may be used as well (see Table 4 for capacitor selection). Atnominal load current, the device operates in power-save mode, and the output voltage ripple is independent ofthe output capacitor value. The output voltage ripple is set by the internal comparator thresholds. The typicaloutput voltage ripple is 1% of the output voltage V
O
.
Table 4. Capacitor selection
CAPACITOR VALUE CASE SIZE COMPONENT SUPPLIER
4.7 µF 0603 Contact TDK4.7 µF 0805 Taiyo Yuden JMK212BY475MG
Taiyo Yuden JMK212BJ106MG10 µF 0805
TDK C12012X5ROJ106K0805 Contact TDK22 µF
1206 Taiyo Yuden JMK316BJ226
Copyright © 2003 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 15
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
Layout Considerations
VI
GND
EN
SW
FB
C1
4.7 µF
L1
4.7 µH
C2
10 µF
TPS62220
VI
2.5 V − 6 V VO
1.8 V / 400 mA
R1
R2
C1
C2
Typical Applications
VI
GND
EN
SW
FB
C3
10 µF
L1
10 µH
C4
10 µF
TPS62220
VI
3.6 V to 6 V VO
3.3 V/400 mA
R1
680 kΩ
R2
120 kΩ
C1
10 pF
C2
150 pF
1
2
3
5
4
VI
GND
EN
SW
FB
C3
4.7 µF
L1
10 µH
C4
10 µF
TPS62220
VI
2.7 V to 6 V VO
2.5 V/400 mA
R1
510 kΩ
R2
130 kΩ
C1
15 pF
C2
150 pF
1
2
3
5
4
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
www.ti.com
For all switching power supplies, the layout is an important step in the design, especially at high-peak currentsand switching frequencies. If the layout is not carefully done, the regulator shows stability problems as well asEMI problems. Therefore, use wide and short traces for the main current paths, as indicated in bold in Figure 16 .The input capacitor, as well as the inductor and output capacitor, should be placed as close as possible to the ICpins. In particular, the input capacitor needs to be placed as close as possible to the IC pins, directly across theVin and GND pin. The feedback resistor network must be routed away from the inductor and switch node tominimize noise and magnetic interference. To further minimize noise from coupling into the feedback networkand feedback pin, the ground plane or ground traces must be used for shielding. This becomes importantespecially at high switching frequencies of 1.25 MHz.
Figure 16. Layout Diagram
Figure 17. LI-Ion to 3.3-V Conversion
Figure 18. LI-Ion to 2.5-V Conversion
16 Submit Documentation Feedback Copyright © 2003 – 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
VI
GND
EN
SW
FB
C3
4.7 µF
L1
4.7 µH
C4
10 µF
TPS62220
VI
2.5 V to 6 V VO
1.8 V/400 mA
R1
470 kΩ
R2
180 kΩ
C1
15 pF
C2
100 pF
1
2
3
5
4
VI
GND
EN
SW
FB
C3
4.7 µF
L1
4.7 µH
C4
10 µF
TPS62220
VI
2.5 V to 6 V VO
1.5 V/400 mA
R1
360 kΩ
R2
180 kΩ
C1
22 pF
C2
100 pF
1
2
3
5
4
VI
GND
EN
SW
FB
C3
4.7 µF
L1
4.7 µH
C4
10 µF
TPS62220
VI
2.5 V to 6 V VO
1.2 V/400 mA
R1
330 kΩ
R2
240 kΩ
C1
22 pF
C2
100 pF
1
2
3
5
4
VI
GND
EN
SW
FB
C1
4.7 µF
L1
4.7 µH
C2
22 µF
TPS62221
VI
2.5 V to 6 V VO
1.5 V/400 mA
1
2
3
5
4
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
www.ti.com
....................................................................................................................................... SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009
Figure 19. LI-Ion to 1.8-V Conversion
Figure 20. LI-Ion to 1.5-V Conversion
Figure 21. LI-Ion to 1.2-V Conversion
Figure 22. Li-Ion to 1.5-V Conversion, Fixed Output Voltage Version
Copyright © 2003 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
VI
GND
EN
SW
FB
C1
4.7 µF
L1
10 µH
C2
10 µF
TPS62223
VI
2.5 V to 6 V VO
2.3 V/400 mA
1
2
3
5
4
TPS62220 , , TPS62221 , , TPS62222TPS62223 , TPS62224 , TPS62225TPS62227 , TPS62228 , TPS62229
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009 .......................................................................................................................................
www.ti.com
Figure 23. Li-Ion to 2.3-V Conversion, Fixed Output Voltage Version
18 Submit Documentation Feedback Copyright © 2003 – 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS62220 TPS62221 TPS62222 TPS62223 TPS62224 TPS62225 TPS62227 TPS62228TPS62229
PACKAGE OPTION ADDENDUM
www.ti.com 30-Jul-2011
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TPS62220DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62220DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62220DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62220DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62221DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62221DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62221DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62221DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62222DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62222DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62222DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62222DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62223DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62223DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62223DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62223DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62224DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com 30-Jul-2011
Addendum-Page 2
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TPS62224DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62224DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62224DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62225DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62225DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62227DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62227DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62227DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62227DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62228DDCR ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62228DDCRG4 ACTIVE SOT DDC 5 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62228DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62228DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62229DDCT ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS62229DDCTG4 ACTIVE SOT DDC 5 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
PACKAGE OPTION ADDENDUM
www.ti.com 30-Jul-2011
Addendum-Page 3
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
TPS62220DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62220DDCR SOT DDC 5 3000 179.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3
TPS62220DDCT SOT DDC 5 250 179.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3
TPS62220DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62221DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62221DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62222DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62222DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62223DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62223DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62224DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62224DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62225DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62227DDCR SOT DDC 5 3000 179.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3
TPS62227DDCT SOT DDC 5 250 179.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3
TPS62228DDCR SOT DDC 5 3000 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62228DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
TPS62229DDCT SOT DDC 5 250 180.0 8.4 3.1 3.05 1.1 4.0 8.0 Q3
PACKAGE MATERIALS INFORMATION
www.ti.com 27-Aug-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TPS62220DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62220DDCR SOT DDC 5 3000 203.0 203.0 35.0
TPS62220DDCT SOT DDC 5 250 203.0 203.0 35.0
TPS62220DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62221DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62221DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62222DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62222DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62223DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62223DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62224DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62224DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62225DDCR SOT DDC 5 3000 202.0 201.0 28.0
TPS62227DDCR SOT DDC 5 3000 203.0 203.0 35.0
TPS62227DDCT SOT DDC 5 250 203.0 203.0 35.0
TPS62228DDCR SOT DDC 5 3000 180.0 180.0 85.0
TPS62228DDCT SOT DDC 5 250 180.0 180.0 85.0
TPS62229DDCT SOT DDC 5 250 180.0 180.0 85.0
PACKAGE MATERIALS INFORMATION
www.ti.com 27-Aug-2012
Pack Materials-Page 2
IMPORTANT NOTICE
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changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
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