1/30
XC6220 Series
1A LDO Voltage Regulator with “GreenOperation”
GreenO
p
eration-Com
p
atible
GENERAL DESCRIPTION
The XC6220 series is a highly accurate, low noise, high speed, low dropout, and large current CMOS voltage regulator with
GreenOperation function. The series consists of a voltage reference, an error amplifier, a current limiter, an inrush current
prevention circuit and a phase compensation circuit plus a driver transistor.
With a 0.2 on-resistance driver transistor integrated and with output currents up to 1A, the ultra low dropout voltage
performance greatly extends battery life as does the GreenOperation function which can switch between high speed and
power save modes automatically. Low ESR ceramic capacitors can be used for the output stabilization capacitor (CL).
Output voltage is selectable in 0.05V increments within the range of 0.8V~5.0V, using laser trimming technologies.
An over current protection circuit and a thermal shutdown circuit are built in. The over current protection circuit will operate
when the output current reaches its limit current. The thermal shutdown circuit will operate when the junction temperature
reaches its limit temperature. The inrush protection circuit works by controlling the inrush current which is charged to CL when
the IC starts up. In this way, any fluctuations to VIN caused by inrush current during system start up can be minimized.
The CE function enables the output to be turned off and the IC becomes a stand-by mode resulting in greatly reduced power
consumption.
A
PPLICATIONS
CD-ROM, CD-R/RW drives
DVD drives
HDD drives
MIDs, UMPCs
Digital still cameras, Video cameras
Portable AV equipment
TYPICAL APPLICATION CIRCUIT
ETR0341-008
FEATURES
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Accuracy
Low Power Consumption
Operating Temperature
Thermal Shutdow n
Inrush Current Protection
CL Auto Discharge
CE Pull-Down Resistor
Output Capacitor
Packages
Environmentally Friendly
: 1000mA (TYP.:1200mA limit)
(1.2VVOUT5.0V)
: 20mV @ 100mA (VOUT=3.0V)
: 60mV@ 300mA (VOUT=3.0V)
: 1.6V ~ 6.0V
: 0.8V ~ 5.0V (0.05V increments)
:±1% (VOUT2.0V)
:±20mV (VOUT2.0V)
: 8μA (TYP.) in PS mode
: 50μA (TYP.) in HS mode
: - 40~ +85
: Detect 150, Release 135(TYP.)
: 700mA (MAX.)
: XC6220B/D Series
: XC6220C/D Series
: Ceramic Capacitor Compatible
: USP-6C, SOT-25, SOT-89-5
: EU RoHS Compliant, Pb Free
TYPICAL PERFORMANCE
CHARACTERISTICS
XC6220x181
0
100
200
300
400
500
0 200 400 600 800 1000
Output Current: IOUT (mA)
Dropout Voltage: Vdif (mV)
Topr=25℃
Topr=-40
Topr=85℃
CE=VIN, CIN=CL=10μF (ceramic
)
2/30
XC6220 Series
123
4
52
VINVOUT
VSS
CE NC
SOT-89-5
(TOP VIEW)
13
2
5 4
VIN
VOUT
VSS CE
NC
SOT -25
( TOP VIEW)
USP-6C
(BOTTOM VIEW)
5
6
4
1
2
3
VIN
VIN
VSS
VOUT
VOUT
CE
PIN NUMBER
SOT-25 SOT-89-5 USP-6C PIN NAME FUNCTIONS
3 1 3 CE ON/OFF Control
1 4 6 & 5 VIN Power Input
2 2 4 VSS Ground
5 5 1 & 2 VOUT Output
4 3 - NC No connection
PIN CONFIGURATION
PIN ASSIGNMENT
* The No.5 and 6 VIN pins should be connected. The
No.1 and 2 pins VOUT pins should be connected. The
dissipation pad for the USP-6C package should be
solder-plated in recommended mount pattern and
metal masking so as to enhance mounting strength
and heat release. If the pad needs to be connected
to other pins, it should be connected to the VSS (No. 4)
3/30
XC6220
Series
PRODUCT NAME CONDITIONS
XC6220A without CE Pull-down resistor, without CL auto discharge (Semi-custom)
XC6220B without CE Pull-down resistor, with CL auto discharge (Standard)
XC6220C with CE Pull-down resistor, without CL auto discharge (Semi-custom)
XC6220D with CE Pull-down resistor, with CL auto discharge (Semi-custom)
DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION
A without CE Pull-down resistor, without CL discharge (Semi-custom)
B without CE Pull-down resistor, with CL discharge (Standard)
C with CE Pull-down resistor, without CL discharge (Semi-custom)
Type of CE
D with CE Pull-down resistor, with CL discharge (Semi-custom)
Output Voltage 08~50 e.g. 3.0V =3, =0
1
Output voltage {.0v} (the 2nd decimal place is “0”)
:HS Mode
Accuracy±1%(VOUT(T)2.1V), within 0.02V (VOUT(T)2.0V)
:PS Mode
Accuracy±2%(VOUT(T)2.1V), within 0.04V (VOUT(T)2.0V)
Output Voltage
Accuracy
B
Output voltage {.5v} (the 2nd decimal place is “5”)
:HS Mode
Accuracy±1%(VOUT(T)2.05V), within 0.02V (VOUT(T)1.95V)
:PS Mode
Accuracy±2%(VOUT(T)2.05V), within 0.04V (VOUT(T)1.95V)
MR SOT-25
MR-G SOT-25
PR SOT-89-5
PR-G SOT-89-5
ER USP-6C
⑤⑥- Packages
Taping Type (*2)
ER-G USP-6C
Selection Guide
Please see the optional setting for CL discharge and internal CE pull-down.
Ordering Information
XC6220 ①②③④⑤⑥-⑦(*1)
PRODUCT CLASSIFICATION
(*1) The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
(*2) The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office o
r
representative. (Standard orientation: R-, Reverse orientation: L-)
4/30
XC6220 Series
PARAMETER SYMBOL RATINGS UNITS
Input Voltage VIN 6.5 V
Output Current (*1) IOUT 1400 mA
Output Voltage VOUT V
SS -0.3 ~ VIN +0.3 V
CE Input Voltage VCE V
SS -0.3 ~ 6.5 V
250
SOT-25 600 PCB mounted(*2)
500
SOT-89-5 1300 PCB mounted(*2)
120
Power Dissipation
USP-6C
Pd
1000 PCB mounted(*2)
mW
Operating Temperature Range Topr - 40 ~ + 85
Storage Temperature Range Tstg - 55 ~ + 125
BLOCK DIAGRAMS
ABSOLUTE MAXIMUM RATINGS
*1 Please use within the range of IOUT=Pd / (VIN – VOUT)
*2: The power dissipation figure shown is PCB mounted. Please refer to pages 1517 for details.
Ta=25
XC6220A Series (Semi-custom) XC6220B Series
XC6220C Series (Semi-custom) XC6220D Series (Semi-custom)
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
5/30
XC6220
Series
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
High Speed Mode (HS)
2.0VVOUT(T)5.0V
VCE=VIN, IOUT=30mA
×0.99 ×1.01
High Speed Mode (HS)
0.8VVOUT(T)1.95V
VCE=VIN, IOUT=30mA
-0.02 +0.02
Power Save Mode (PS)
2.0VVOUT(T)5.0V
VCE=VIN, IOUT=0.1mA
×0.98 ×1.02
Output Voltage VOUT(E)
(*2)
Power Save Mode (PS)
0.8VVOUT(T)1.95V
VCE=VIN, IOUT=0.1mA
-0.04
VOUT(T)
(*3)
+0.04
V
High Speed Mode(HS)VCE=VIN
VIN=VOUT(T)+1.0V
0.8VVOUT(T)1.15V
700 1200 -
Output Current IOUTMAX
High Speed Mode(HS)VCE=VIN
VIN=VOUT(T)+1.0V
1.2VVOUT(T)5.0V
1000 1200 -
mA
Load Regulation ΔVOUT High Speed Mode (HS), VCE=VIN
10mAIOUT300mA - 10 45 mV
Dropout Voltage1 (*4) Vdif High Speed Mode (HS)
IOUT=300mA, VCE=VIN see the Voltage Chart mV
Dropout Voltage2 (*4) Vdif High Speed Mode(HS)
IOUT=1000mA, VCE=VIN see the Voltage Chart mV
High Speed Mode(HS)
VIN=VCE=VOUT(T)+1.0V
IOUT=10mA (A/B Series)
- 50 108
Supply Current 1 ISS1 High Speed Mode(HS)
VIN=VCE=VOUT(T)+1.0V
IOUT=10mA (C/D Series)
- 50
see the
Voltage
Chart
μA
Power Save Mode(PS)
VIN=VCE=VOUT(T)+1.0V
IOUT=0.1mA
- 8 18
Supply Current 2 ISS2 Power Save Mode(PS)
VIN=VCE=VOUT(T)+1.0V
IOUT=0.1mA
- 8
see the
Voltage
Chart
μA
Stand-by Current ISTBY VIN=6.0V, VCE=VSS -0.1 0.01 0.1 μA
VOUT(T)+0.5VVIN6.0V
1.1VVOUT(T)5.0V
High Speed Mode (HS), VCE=VIN
IOUT=100mA
Line Regulation
ΔV
OUT
/
(ΔV
IN
V
OUT
)
1.6VVIN6.0V
0.8VVOUT(T)1.05V
High Speed Mode (HS), VCE=VIN
IOUT=100mA
- 0.01 0.20 %/V
Input Voltage VIN 1.6 - 6.0 V
Output Voltage
Temperature
Characteristics
ΔVOUT/
(ΔTaVOUT)
High Speed Mode (HS), VCE=VIN
IOUT=30mA
-40℃≦Ta85
- ±100 - ppm/
ELECTRICAL CHARACTERISTICS
XC6220A/B/C/D Series Ta=25
6/30
XC6220 Series
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
VIN=5.75VDC+0.5Vp-pAC
4.75VVOUT(T)5.0V
High Speed Mode (HS), VCE=VIN
I
OUT=30mA, f=1kHz
VIN=VOUT(T)+1.0
VDC+0.5Vp-pAC
0.85VVOUT(T)4.7V
High Speed Mode (HS), VCE=VIN
I
OUT=30mAf=1kHz
Ripple Rejection Rate PSRR
VIN=1.85VDC+0.5Vp-pAC
VOUT(T)=0.8V
High Speed Mode (HS), VCE=VIN
I
OUT=30mA, f=1kHz
- 50 - dB
VCE=VIN= VOUT(T)+1.0V
0.8VVOUT(T)1.15V 705 1200 -
Limit Current ILIM VCE=VIN
VIN= VOUT(T)+1.0V
1.2VVOUT(T)5.0V
1005 1200 -
mA
Short Current ISHORT VCE=VIN
Short VOUT to VSS level - 180 - mA
PS Switching Current IGOR
1.45VVOUT(T)5.0V
VIN=VOUT(T)+1.0V, VCE=H Level
0.8VVOUT(T)1.4V
VIN=1.6V, VCE=H Level
IOUT=heavy to light load
1.0 2.0 - mA
HS Switching Current IGO
1.45VVOUT(T)5.0V
VIN=VOUT(T)+1.0V, VCE=H Level
0.8VVOUT(T)1.4V
VIN=1.6V, VCE=H Level
IOUT=light to heavy load
- 5.0 10 mA
Switch Current
Hysteresis Range IGOhys I
GOhys=IGO-IGOR - 3.0 - mA
PS Switching Delay Time tDPS
VCE=VIN=VOUT(T)+1.0V,
(HS/PS Auto-Switching)
Time until HS mode is changed-over to
PS mode by I
GOR.
see the Voltage Chart μs
CE High Level Voltage VCEH VCE=VIN 1.2 - 6.0 V
CE Low Level Voltage VCEL VCE=VSS - - 0.4 V
VCE=VIN (A/B series) -0.1 - 0.1 μA
CE High Level Current ICEH VCE=VIN=6.0V (C/D series) - 9 15 μA
CE Low Level Current ICEL VCE=VSS -0.1 - 0.1 μA
CL Discharge Resistance
(*7)
RDCHG V
IN=6.0V, VOUT=5.0V, VCE= VSS - 460 -
Thermal Shutdown
Detect Temperature TTSD Junction Temperature - 150 -
Thermal Shutdown
Release Temperature TTSR Junction Temperature - 135 -
Inrush Current IRUSH
VIN=VOUT(T)+1.0VCL=22μF
VCE=0VVOUT(T)+1.0V
(Only when rising and within 1ms)
- - 700 mA
NOTE:
*1: Unless otherwise stated, VIN=VOUT (T) +1.0V.
*2: VOUT (E)= Effective output voltage (see the voltage chart)
(ie. The output voltage when VOUT (T)+1.0V is provided at the VIN pin while maintaining a certain IOUT value.
*3: VOUT (T): Nominal output voltage
*4: Vdif={VIN1
(*6) - VOUT1
(*5)}
*5: VOUT1=A voltage equal to 98% of the VOUT(T) when an amply stabilized IOUT {VOUT(T)+1.0V} is input in the HS mode.
*6: VIN1=The input voltage when VOUT1 appears as input voltage is gradually decreased.
*7: For the XC6220B/D series only. The XC6220A/C series (semi-custom) discharges by resistors R1 and R2 only as shown in the block
diagrams.
*8: For the XC6220A/C series, output voltage rises when the IC is in the high temperature stand-by mode.
ELECTRICAL CHARACTERISTICS (Continued)
7/30
XC6220
Series
Voltage Chart 1
OUTPUT
VOLTAGE 1
HS Mode
(V)
OUTPUT
VOLTAGE 2
(PS Mode)
(V)
DROPOUT
VOLTAGE 1
Vdif 1 (mV)
IOUT=300mA
DROPOUT
VOLTAGE 2
Vdif 2 (mV)
IOUT=1000mA
SUPPLY
CURRENT 1
(XC6220C/D )
(
μ
A)
SUPPLY
CURRENT 2
(XC6220C/D )
(
μ
A)
PS
SWITCH
DELAY
TIME
(μs)
NOMINAL
OUTPUT
VOLTAGE
(V)
VOUT VOUT Vdif Vdif ISS1 ISS2 tDPS
VOUT(T) MIN. MAX. MIN. MAX. TYP. MAX. MAX. MAX. MAX. MAX.
0.80 0.7800 0.8200 0.7600 0.8400 112.500 22.500
0.85 0.8300 0.8700 0.8100 0.8900 112.625 22.625
0.90 0.8800 0.9200 0.8600 0.9400 112.750 22.750
0.95 0.9300 0.9700 0.9100 0.9900
400 575
112.875 22.875
1.00 0.9800 1.0200 0.9600 1.0400 113.000 23.000
1.05 1.0300 1.0700 1.0100 1.0900 240 405 113.125 23.125
1.10 1.0800 1.1200 1.0600 1.1400 113.250 23.250
1.15 1.1300 1.1700 1.1100 1.1900 180 305
113.375 23.375
1.20 1.1800 1.2200 1.1600 1.2400 113.500 23.500
1.25 1.2300 1.2700 1.2100 1.2900 113.625 23.625
1.30 1.2800 1.3200 1.2600 1.3400 113.750 23.750
1.35 1.3300 1.3700 1.3100 1.3900 113.875 23.875
1.40 1.3800 1.4200 1.3600 1.4400 114.000 24.000
1.45 1.4300 1.4700 1.4200 1.4800
150 215 460
114.125 24.125
1.50 1.4800 1.5200 1.4700 1.5300 114.250 24.250
1.55 1.5300 1.5700 1.5100 1.5900 114.375 24.375
650
1.60 1.5800 1.6200 1.5600 1.6400 114.500 24.500
1.65 1.6300 1.6700 1.6100 1.6900 114.625 24.625
1.70 1.6800 1.7200 1.6600 1.7400 114.750 24.750
1.75 1.7300 1.7700 1.7100 1.7900
100 150
114.875 24.875
1.80 1.7800 1.8200 1.7600 1.8400 115.000 25.000
1.85 1.8300 1.8700 1.8100 1.8900 115.125 25.125
1.90 1.8800 1.9200 1.8600 1.9400 115.250 25.250
1.95 1.9300 1.9700 1.9100 1.9900 115.375 25.375
2.00 1.9800 2.0200 1.9600 2.0400 115.500 25.500
2.05 2.0295 2.0705 2.0090 2.0910 115.625 25.625
2.10 2.0790 2.1210 2.0580 2.1420 115.750 25.750
2.15 2.1285 2.1715 2.1070 2.1930 115.875 25.875
2.20 2.1780 2.2220 2.1560 2.2440 116.000 26.000
2.25 2.2275 2.2725 2.2050 2.2950 116.125 26.125
2.30 2.2770 2.3230 2.2540 2.3460 116.250 26.250
2.35 2.3265 2.3735 2.3030 2.3970 116.375 26.375
2.40 2.3760 2.4240 2.3520 2.4480 116.500 26.500
2.45 2.4255 2.4745 2.4010 2.4990
85 130
116.625 26.625
2.50 2.4750 2.5250 2.4500 2.5500 116.750 26.750
2.55 2.5245 2.5755 2.4990 2.6010 116.875 26.875
850
2.60 2.5740 2.6260 2.5480 2.6520 117.000 27.000
2.65 2.6235 2.6765 2.5970 2.7030 117.125 27.125
2.70 2.6730 2.7270 2.6460 2.7540 117.250 27.250
2.75 2.7225 2.7775 2.6950 2.8050 117.375 27.375
2.80 2.7720 2.8280 2.7440 2.8560 117.500 27.500
2.85 2.8215 2.8785 2.7930 2.9070 117.625 27.625
2.90 2.8710 2.9290 2.8420 2.9580 117.750 27.750
2.95 2.9205 2.9795 2.8910 3.0090
65 110
655
117.875 27.875
1200
ELECTRICAL CHARACTERISTICS
(
Continued
)
8/30
XC6220 Series
Voltage Chart 2
OUTPUT
VOLTAGE
HS Mode
(V)
OUTPUT
VOLTAGE
(PS Mode)
(V)
DROPOUT
VOLTAGE 1
Vdif 1 (mV)
IOUT=300mA
DROPOUT
VOLTAGE 2
Vdif 2 (mV)
IOUT=1000mA
SUPPLY
CURRENT 1
(XC6220C/D)
(
μ
A)
SUPPLY
CURRENT 2
(XC6220C/D)
(
μ
A)
PS
SWITCH
DELAY
TIME
(μs)
NOMINAL
OUTPUT
VOLTAGE
(V)
VOUT VOUT Vdif Vdif ISS1 ISS2 tDPS
VOUT(T) MIN. MAX. MIN. MAX. TYP. MAX. MAX. MAX. MAX. MAX.
3.00 2.9700 3.0300 2.9400 3.0600 118.000 28.000
3.05 3.0195 3.0805 2.9890 3.1110 118.125 28.125
3.10 3.0690 3.1310 3.0380 3.1620 118.250 28.250
3.15 3.1185 3.1815 3.0870 3.2130 118.375 28.375
3.20 3.1680 3.2320 3.1360 3.2640 118.500 28.500
3.25 3.2175 3.2825 3.1850 3.3150 118.625 28.625
3.30 3.2670 3.3330 3.2340 3.3660 118.750 28.750
3.35 3.3165 3.3835 3.2830 3.4170 118.875 28.875
3.40 3.3660 3.4340 3.3320 3.4680 119.000 29.000
3.45 3.4155 3.4845 3.3810 3.5190 119.125 29.125
3.50 3.4650 3.5350 3.4300 3.5700 119.250 29.250
3.55 3.5145 3.5855 3.4790 3.6210 119.375 29.375
3.60 3.5640 3.6360 3.5280 3.6720 119.500 29.500
3.65 3.6135 3.6865 3.5770 3.7230 119.625 29.625
3.70 3.6630 3.7370 3.6260 3.7740 119.750 29.750
3.75 3.7125 3.7875 3.6750 3.8250 119.875 29.875
3.80 3.7620 3.8380 3.7240 3.8760 120.000 30.000
3.85 3.8115 3.8885 3.7730 3.9270 120.125 30.125
3.90 3.8610 3.9390 3.8220 3.9780 120.250 30.250
3.95 3.9105 3.9895 3.8710 4.0290 120.375 30.375
4.00 3.9600 4.0400 3.9200 4.0800
60 95
120.500 30.500
1200
4.05 4.0095 4.0905 3.9690 4.1310 120.625 30.625
4.10 4.0590 4.1410 4.0180 4.1820 120.750 30.750
4.15 4.1085 4.1915 4.0670 4.2330 120.875 30.875
4.20 4.1580 4.2420 4.1160 4.2840 121.000 31.000
4.25 4.2075 4.2925 4.1650 4.3350 121.125 31.125
4.30 4.2570 4.3430 4.2140 4.3860 121.250 31.250
4.35 4.3065 4.3935 4.2630 4.4370 121.375 31.375
4.40 4.3560 4.4440 4.3120 4.4880 121.500 31.500
4.45 4.4055 4.4945 4.3610 4.5390 121.625 31.625
4.50 4.4550 4.5450 4.4100 4.5900 121.750 31.750
4.55 4.5045 4.5955 4.4590 4.6410 121.875 31.875
4.60 4.5540 4.6460 4.5080 4.6920 122.000 32.000
4.65 4.6035 4.6965 4.5570 4.7430 122.125 32.125
4.70 4.6530 4.7470 4.6060 4.7940 122.250 32.250
4.75 4.7025 4.7975 4.6550 4.8450 122.375 32.375
4.80 4.7520 4.8480 4.7040 4.8960 122.500 32.500
4.85 4.8015 4.8985 4.7530 4.9470 122.625 32.625
4.90 4.8510 4.9490 4.8020 4.9980 122.750 32.750
4.95 4.9005 4.9995 4.8510 5.0490 122.875 32.875
5.00 4.9500 5.0500 4.9000 5.1000
53 85
655
123.000 33.000
1450
ELECTRICAL CHARACTERISTICS
(
Continued
)
9/30
XC6220
Series
RCE
CE VIN
VOUT
VSS
Error
Amp
-
+
Current
Limit
Thermal
Protection
Green
Operation
ON/OFF
Control
CE CE/
each
circuit
R1
R2
Voltage
Reference
CE/
The voltage divided by resistors R1 & R2 is compared
with the internal reference voltage by the error amplifier.
The P-channel MOSFET which is connected to the VOUT
pin is then driven by the subsequent output signal. The
output voltage at the VOUT pin is controlled & stabilized
by a system of negative feedback. The current limit
circuit and short protect circuit operate in relation to the
level of output current. The GO function monitors the
output current and switches the IC between two
operating modes according to the level of output
current. Further, the IC's internal circuitry can be
shutdown via the CE pin's signal.
<Low ESR capacitor>
The XC6220 series has a built-in phase compensation circuit which means that a stable output voltage is achieved even if
the IC is used with low ESR capacitors. In order to ensure stable phase compensation it is recommended that a CL capacitor
is connected as close as possible to the VOUT pin and VSS pin. For a stable power supply, please connect an input capacitor
(CIN) between the VIN pin and the VSS pin.
Values required for the phase compensation are shown in the chart below. If a loss of the capacitance happens, the stable
phase compensation may not be obtained. Please ensure to use a capacitor which does not depend on bias or temperature
too much.
Recommended output capacitor (CL) Values corresponding to input capacitor (CIN)
INPUT CAPACITOR VALUE
OUTPUT VOLTAGE (V) 4.7μF 10μF22μF
0.80V0.95V × ×
22μF
1.00V1.45V 47μF 47μF22μF
1.50V1.75V 47μF 22μF10μF
1.80V2.95V 47μF 6.8μF6.8μF
3.00V3.50V 47μF 4.7μF4.7μF
3.55V5.00V 47μF 10μF6.8μF
× No option
<Current Limiter, Short-Circuit Protection>
The XC6220 series includes a fold-back circuit, which aids the operation of the current limiter and circuit protection. When
the load current reaches the current limit level, the fold-back circuit operates and output voltage drops. As a result of this drop
in output voltage, output current also decreases. When the output pin is shorted, a current of about 180mA flows.
<CE Pin>
The IC's internal circuitry can be shutdown via the signal from the CE pin with the XC6220 series. With the XC6220B/D
series, output at the VOUT pin will be pulled down to the VSS level. However, with XC6220A/B series, the CL auto-discharge
resistor is connected in parallel to R1 and R2 while the power supply is applied to the VIN pin. Therefore, the time until the
VOUT pin reaches the VSS level is shortened. The output voltage becomes unstable, when the CE pin is open. If this IC is
used with the correct output voltage for the CE pin, the logic is fixed and the IC will operate normally. However, with the
XC6220C/D series, supply current may increase as a result of through current in the IC's internal circuitry when medium
voltage is input.
OPERATIONAL EXPLANATION
<GreenOperation>
The XC6220 series always operates in a green operation (GO) mode.
The GO mode enables the IC to switch automatically between the high
speed (HS) mode or the power save (PS) mode according to the level of
output current. The switching point of the HS mode and the PS mode is
fixed inside the IC. When the output current becomes IGOR=1.0mA (MIN.)
or below, the mode changes automatically to the PS mode after a delay
time of hundreds of microseconds. Supply current in light load is greatly
reduced. Also when the output current becomes IGO 10mA (MAX.) or
more, the mode changes automatically to the HS mode and the IC
returns to high speed operation.
XC6220x301
0
10
20
30
40
50
0 5 10 15 20
Output Current: IOUT (mA)
Supply Current: ISS (μA)
CE=VIN, Topr=25℃, CIN=10μF, CL=4.F (cerami c
)
10/30
XC6220 Series
NOTES ON USE
<CL High Speed Auto-Discharge Function>
The XC6220B/D series can quickly discharge the electric charge at the output capacitor (CL), when a low signal to the CE
pin, which enables the whole IC circuit put into an OFF state, is inputted to the CE pin via the N-channel transistor located
between the VOUT pin and the VSS pin (cf. BLOCK DIAGRAM). The CL auto-discharge resistance value is fixed to 460Ω
(VIN=6.0V, VOUT=5.0V at TYP.). The discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance
(RDCHG) and the output capacitor (CL). By setting a time constant of the CL auto-discharge resistance value [RDCHG] and an
output capacitor value (CL) as τ(τ=C x RDCHG), the output voltage after discharge via the N channel transistor is calculated
by the following formulas.
V = VOUT x e –t/
τ
, or t=τln( VOUT(E) / V
where
V : Output voltage after discharge
VOUT(E) : Output voltage
t: Discharge time
τ: CL auto-discharge resistance RDCHG×Output capacitor (CL) value C)
For the XC6220A/C series, output voltage may rises when in the high stand-by mode. Please note that in that case, the
typical characteristics may worse. When the XC6220A/C series is used, please be noted the characteristics shown below.
XC6220A501xx
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
20 40 60 80 100
Ta (℃)
VOUT (V)
Output Voltage vs. Input Voltage
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1.0 2.0 3.0 4.0 5.0 6.0
VIN (V)
VOUT (V)
<Thermal Shutdown>
When the junction temperature of the built-in driver transistor reaches the temperature limit level (150 TYP.), the thermal
shutdown circuit operates and the driver transistor will be turned OFF. The IC resumes its operation when the thermal
shutdown function is released and the IC’s operation is automatically restored because the junction temperature drops to the
level of the thermal shutdown release voltage.
<Inrush Current Protection>
The XC6220 series includes an inrush current protection circuit.
The inrush current protection circuit suppresses inrush current charged to CL when the IC starts up to 700 mA (MAX.) for
approximately 1 ms.
* Please note that the device can not provide the output current beyond 700 mA for a period of approximately 1 ms after the
CE pin goes high.
OPERATIONAL EXPLANATION (Continued)
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be
exceeded.
2.
Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current.
Please strengthen VIN and VSS wiring in particular.
3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
11/30
XC6220
Series
TEST CIRCUITS
スタ ・測定回2(消費電流・ 電流)
VIN
CE
VSS
VOUT
CIN
(ceramic) CL
(ceramic)
SW1
・測定回路3(リップ)
VIN
CE
VSS
VOUT
CL
(ceramic)
IOUT=30mA
RL
VV
・測定回路1 (出力電圧・出力電流・入出力電圧差・入力動作電圧・入力安定度・負荷安定度・制限電流・
短絡電流CL放電抵抗)
VIN
CE
VSS
VOUT
CL
(ceramic)
IOUT
RL
SW2
CIN
(ceramic)
SW1
A
A
A
V
V
A
PS:0.1mA
HS:10mA
A
SW2
Circuit 1: Output Voltage, Output Current, Dropout Voltage, Input/Operating Voltage, Line Regulation, Load Regulation,
Current Limit, Short Current, CL Discharge Resistance
Circuit 2: Supply Current, Stand-by Current
Circuit 3: Ripple Rejection Rate
12/30
XC6220 Series
・測定回路4 (CEHL 電圧 CEHL”レ)
VIN
CE
VSS
VOUT
VCE
V
CL
(ceramic)
CIN
(ceramic)
・測定回路5 (HS切替電流、PS切替替ヒスリシス電流、PS切替遅延時間)
VIN
CE
VOUT
VSS
ISS
IOUT
RL
CIN
(ceramic)
CL
(ceramic)
V
A
A
V
A
TEST CIRCUITS (Continued)
Circuit 4: CE “H” “L” Level Voltage, CE “H” “L” Level Current
Circuit 5: HS Switching Current, PS Switching Current, Switch Current Hysteresis Range, PS Switching Delay Time
13/30
XC6220
Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
XC6220x121
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
(V)
Topr=25℃
Topr=-40℃
Topr=85℃
VIN=CE=2.2V, CIN=CL=22μF (ceramic
)
XC6220x301
0
0.5
1
1.5
2
2.5
3
3.5
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
(V)
Topr=25℃
Topr=-40℃
Topr=85℃
VIN=CE=4.0V, CIN=10μF, CL=4.7μF (ceramic
XC6220x501
0
1
2
3
4
5
6
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
V)
Topr=25℃
Topr=-40℃
Topr=85℃
VIN=CE=6.0V, CIN=CL=10μF (ceramic
)
XC6220x301
0
0.5
1
1.5
2
2.5
3
3.5
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
(V)
VIN=3.1V
VIN=4.0V
CE=VIN, Topr=25℃, CIN=10μF, CL=4.7μF (ceramic
XC6220x501
0
1
2
3
4
5
6
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
(V)
VIN=5.1V
VIN=6.0V
CE=VIN, Topr=25℃, CIN=CL=10μF (ceramic
)
XC6220x121
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 0.2 0.4 0.6 0.8 1 1.2 1.4
Output Current: IOUT (A)
Output Voltage: VOUT
(V)
VIN=1.6V
VIN=2.2V
CE=VIN, Topr=25℃, CIN=CL=22μF (ceramic
)
14/30
XC6220 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(
Continued
)
(2) Output Voltage vs. Input Voltage
(3) Dropout Voltage vs. Output Current
XC6220x121
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0123456
Input Voltage: VIN (V)
Output Voltage: VOUT
(V)
IOUT=0.1mA
IOUT=30mA
IOUT=100mA
CE=VIN, Topr=25℃, CIN=CL=22μF (ceramic
)
XC6220x301
0
0.5
1
1.5
2
2.5
3
3.5
0123456
Input Voltage: VIN (V)
Output Voltage: VOUT
(V)
IOUT=0.1mA
IOUT=30mA
IOUT=100mA
CE=VIN, Topr=25℃, CIN=10μF, CL=4.7μF (ceramic
)
XC6220x501
0
1
2
3
4
5
6
0123456
Input Voltage: V
IN
(V)
Output Voltage: V
OUT
(V)
IOUT=0.1mA
IOUT=30mA
IOUT=100mA
CE=V
IN
, Topr=25℃, C
IN
=C
L
=10μF (ceramic
)
XC6220x121
0
100
200
300
400
500
600
0 200 400 600 800 1000
Output Current: IOUT (mA)
Dropout Voltage: Vdif (mV)
Topr=25℃
Topr=-40℃
Topr=85℃
CE=VIN, Topr=25℃, CIN=CL=22μF (ceramic
)
XC6220x301
0
100
200
300
400
500
600
0 200 400 600 800 1000
Output Current: IOUT (mA)
Dropout Voltage: Vdif (mV)
Topr=25℃
Topr=-40℃
Topr=85℃
CE=VIN, Topr=25℃, CIN=10μF, CL=4.7μF (ceramic
)
15/30
XC6220
Series
TYPICAL PERFORMANCE CHARACTERISTICS
(
Continued
)
(3) Dropout Voltage vs. Output Current
(4) Output Voltage vs. Ambient Temperature
XC6220x501
0
100
200
300
400
500
600
0 200 400 600 800 1000
Output Current: IOUT (mA)
Dropout Voltage: Vdif (mV)
Topr=25℃
Topr=-40℃
Topr=85℃
CE=VIN, Topr=25℃, CIN=CL=10μF (ceramic
)
XC6220x121
1.176
1.188
1.2
1.212
1.224
-50 -25 0 25 50 75 100
Ambient Temperature: Tpor (℃)
Output Voltage: VOUT
(V)
VIN=CE=2.2V, IOUT=30mA,
CIN=CL=22μF (ceramic
)
XC6220x301
2.94
2.97
3
3.03
3.06
-50 -25 0 25 50 75 100
Ambient Temperature: Tpor ()
Output Voltage: VOUT
(V)
VIN=CE=4.0V, IOUT=30mA,
CIN=10μF, CL=4.7μF (ceramic
)
XC6220x501
4.9
4.95
5
5.05
5.1
-50 -25 0 25 50 75 100
Ambient Temperature: Tpor (℃)
Output Voltage: VOUT
(V)
VIN=CE=6.0V, IOUT=30mA,
CIN=CL=10μF (ceramic
)