TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
150-mA Low-Dropout Voltage Regulator
D
Available in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V,
3.0-V, 3.3-V, 5.0-V Fixed Output and
Adjustable Versions
D
Dropout Voltage to 85 mV (Typ) at 150 mA
(TPS76550)
D
Ultra-Low 35-µA Typical Quiescent Current
D
3% Tolerance Over Specified Conditions for
Fixed-Output Versions
D
Open Drain Power Good
D
8-Pin SOIC Package
D
Thermal Shutdown Protection
description
This device is designed to have an ultra-low quiescent current and be stable with a 4.7-µF capacitor. This
combination provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV
at an output current of 150 mA for the TPS76550) and is directly proportional to the output current. Additionally ,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 35 µA over the full range of output current, 0 mA to 150 mA). These two key
specifications yield a significant improvement in operating life for battery-powered systems. This LDO family
also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the
quiescent current to less than 1 µA (typ).
TA – Free-Air Temperature – °C
– Output Voltage – V
VDO
TPS76533
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
1
10
–50 –25 0 25 50 75 100 125 150
VI = 3.2 V
IO = 10 mA
IO = 50 mA
IO = 150 mA
100
10–1
10–2
10–3 34.0
34.1
34.2
34.3
34.4
34.5
34.6
34.7
34.8
34.9
35.0
0 25 50 75 100 125 150
IL – Load Current – mA
TPS76533
GROUND CURRENT
vs
LOAD CURRENT
VO = 3.3 V
TA = 25°C
GND
I – Ground Current – Aµ
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 1999, Texas Instruments Incorporated
1
2
3
4
8
7
6
5
NC/FB
PG
GND
EN
OUT
OUT
IN
IN
D PACKAGE
(TOP VIEW)
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description (continued)
Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery
indicator.
The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V and 5.0-V fixed-voltage versions and
in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified
as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in 8 pin SOIC
package. AVAILABLE OPTIONS
TJ
OUTPUT VOLTAGE
(V) PACKAGED DEVICES
T
JTYP SOIC
(D)
5.0 TPS76550D
3.3 TPS76533D
3.0 TPS76530D
2.8 TPS76528D
–
40
°
Cto125
°
C
2.7 TPS76527D
–40 C
to
125 C
2.5 TPS76525D
1.8 TPS76518D
1.5 TPS76515D
Adjustable
1.25 V to 5.5 V TPS76501D
The TPS76501 is programmable using an external resistor divider (see application
information). The D package is available taped and reeled. Add an R suffix to the
device type (e.g., TPS76501DR).
†See application information section for capacitor selection details.
PG
OUT
OUT
6
5
4
IN
IN
EN
GND
3
2
7
8
VI
0.1 µF
PG
VO
4.7 µF
+
TPS765xx
CO†
1
NC/FB
300 mΩ
Figure 1. Typical Application Configuration for Fixed Output Options
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram—adjustable version
_
+
Vref = 1.224 V
OUT
FB/NC
EN
GND
PG
_
+
IN
External to the device
R1
R2
functional block diagram—fixed-voltage version
_
+
Vref = 1.224 V
OUT
EN
GND
R1
R2
_
+
IN
PG
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions – SOIC Package
TERMINAL
I/O
DESCRIPTION
NAME NO.
I/O
DESCRIPTION
EN 4 I Enable input
FB/NC 1 I Feedback input voltage for adjustable device (no connect for fixed options)
GND 3Regulator ground
IN 5 I Input voltage
IN 6 I Input voltage
OUT 7 O Regulated output voltage
OUT 8 O Regulated output voltage
PG 2 O PG output
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Ĕ
Input voltage range‡, VI –0.3 V to 13.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range at EN –0.3 V to 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum PG voltage 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak output current Internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See dissipation rating tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO (OUT, FB) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, TJ –40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD rating, HBM 2 kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
‡All voltage values are with respect to network terminal ground.
DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURES
PACKAGE AIR FLOW
(CFM) TA < 25°C
POWER RATING DERATING FACTOR
ABOVE TA = 25°CTA = 70°C
POWER RATING TA = 85°C
POWER RATING
D
0568 mW 5.68 mW/°C312 mW 227 mW
D
250 904 mW 9.04 mW/°C497 mW 361 mW
recommended operating conditions
MIN MAX UNIT
Input voltage, VI
k
2.7 10 V
Output voltage range, VO1.2 5.5 V
Output current, IO (Note 1) 0 150 mA
Operating virtual junction temperature, TJ (Note 1) –40 125 °C
k
To calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load).
NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the
device operate under conditions beyond those specified in this table for extended periods of time.
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range,
Vi = VO(typ) + 1 V, IO = 10 µA, EN = 0 V, CO = 4.7 µF (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TPS76501
5.5 V ≥ VO ≥ 1.25 V, TJ = 25°C VO
TPS76501
5.5 V ≥ VO ≥ 1.25 V, TJ = –40°C to 125°C 0.97VO1.03VO
TPS76515
TJ = 25°C, 2.7 V < VIN < 10 V 1.5
TPS76515
TJ = –40°C to 125°C, 2.7 V < VIN < 10 V 1.455 1.545
TPS76518
TJ = 25°C, 2.8 V < VIN < 10 V 1.8
TPS76518
TJ = –40°C to 125°C, 2.8 V < VIN < 10 V 1.746 1.854
TPS76525
TJ = 25°C, 3.5 V < VIN < 10 V 2.5
TPS76525
TJ = –40°C to 125°C, 3.5 V < VIN < 10 V 2.425 2.575
Output voltage
(10 µA to 150 mA load)
TPS76527
TJ = 25°C, 3.7 V < VIN < 10 V 2.7
V
(10
µ
A
t
o
150
m
A
l
oa
d)
(see
Not
e
2
)
TPS76527
TJ = –40°C to 125°C, 3.7 V < VIN < 10 V 2.619 2.781
V
(see
Note
2)
TPS76528
TJ = 25°C, 3.8 V < VIN < 10 V 2.8
TPS76528
TJ = –40°C to 125°C, 3.8 V < VIN < 10 V 2.716 2.884
TPS76530
TJ = 25°C, 4.0 V < VIN < 10 V 3.0
TPS76530
TJ = –40°C to 125°C, 4.0 V < VIN < 10 V 2.910 3.090
TPS76533
TJ = 25°C, 4.3 V < VIN < 10 V 3.3
TPS76533
TJ = –40°C to 125°C, 4.3 V < VIN < 10 V 3.201 3.399
TPS76550
TJ = 25°C, 6.0 V < VIN < 10 V 5.0
TPS76550
TJ = –40°C to 125°C, 6.0 V < VIN < 10 V 4.850 5.150
Quiescent current (GND current) 10 µA < IO < 150 mA, TJ = 25°C 35
µA
()
EN = 0V, (see Note 2) IO = 150 mA, TJ = –40°C to 125°C 50 µ
A
Output voltage line regulation (∆VO/VO)
(see Notes 2 and 3) VO + 1 V < VI ≤ 10 V, TJ = 25°C 0.01 %/V
Load regulation IO = 10 µA to 150 mA 0.3%
Output noise voltage BW = 300 Hz to 50 kHz,
CO = 4.7 µF, TJ = 25°C200 µVrms
Output current Limit VO = 0 V 0.8 1.2 A
Thermal shutdown junction temperature 150 °C
Standby current
EN = VI, TJ = 25°C,
2.7 V < VI < 10 V 1µA
Standb
y
c
u
rrent
EN = VI, TJ = –40°C to 125°C
2.7 V < VI < 10 V 10 µA
FB input current TPS76501 FB = 1.5 V 2 nA
High level enable input voltage 2.0 V
Low level enable input voltage 0.8 V
Power supply ripple rejection (see Note 2) f = 1 kHz, CO = 4.7 µF,
IO = 10 µA, TJ = 25°C63 dB
Minimum input voltage for valid PG IO(PG) = 300µA 1.1 V
T rip threshold voltage VO decreasing 92 98 %VO
PG Hysteresis voltage Measured at VO0.5 %VO
Output low voltage VI = 2.7 V, IO(PG) = 1mA 0.15 0.4 V
Leakage current V(PG) = 5 V 1µA
In
p
ut current (EN)
EN = 0 V –1 0 1
µA
Inp
u
t
c
u
rrent
(EN)
EN = VI–1 1 µ
A
NOTE: 2. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum IN voltage 10 V.
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range,
Vi = VO(typ) + 1 V, IO = 10 µA, EN = 0 V, CO = 4.7 µF (unless otherwise noted) (continued)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TPS76528
IO = 150 mA, TJ = 25°C 190
TPS76528
IO = 150 mA, TJ = –40°C to 125°C 330
TPS76530
IO = 150 mA, TJ = 25°C 160
Dropout voltage
TPS76530
IO = 150 mA, TJ = –40°C to 125°C 280
mV
(See Note 4)
TPS76533
IO = 150 mA, TJ = 25°C 140
mV
TPS76533
IO = 150 mA, TJ = –40°C to 125°C 240
TPS76550
IO = 150 mA, TJ = 25°C 85
TPS76550
IO = 150 mA, TJ = –40°C to 125°C 150
NOTES: 3. If VO ≤ 1.8 V then Vimin = 2.7 V, Vimax = 10 V:
Line Reg. (mV)
+ǒ
%
ń
V
Ǔ
VO
ǒ
Vimax
*
2.7 V
Ǔ
100
1000
If VO ≥ 2.5 V then Vimin = VO + 1 V, Vimax = 10 V:
Line Reg. (mV)
+ǒ
%
ń
V
Ǔ
VO
ǒ
Vimax
*ǒ
VO
)
1V
ǓǓ
100
1000
4. IN voltage equals VO(Typ) – 100 mV; TPS76501 output voltage set to 3.3 V nominal with external resistor divider. TPS76515,
TPS76518, TPS76525, and TPS76527 dropout voltage limited by input voltage range limitations (i.e., TPS76530 input voltage
needs to drop to 2.9 V for purpose of this test).
Table of Graphs
FIGURE
Out
p
ut voltage
vs Load current 2, 3
O
u
tp
u
t
v
oltage
vs Free-air temperature 4, 5
Ground current
vs Load current 6, 7
Gro
u
nd
c
u
rrent
vs Free-air temperature 8, 9
Power supply ripple rejection vs Frequency 10
Output spectral noise density vs Frequency 11
Output impedance vs Frequency 12
Dropout voltage vs Free-air temperature 13, 14
Line transient response 15, 17
Load transient response 16, 18
Output voltage vs Time 19
Dropout voltage vs Input voltage 20
Equivalent series resistance (ESR) vs Output current 21 – 24
Equivalent series resistance (ESR) vs Added ceramic capacitance 25, 26
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 2
IL – Load Current – mA
– Output Voltage – V
VO
TPS76533
OUTPUT VOLTAGE
vs
LOAD CURRENT
3.292
3.294
3.296
3.298
3.300
3.302
3.304
0 25 50 75 100 125 150
VI = 4.3 V
TA = 25°C
Figure 3
IL – Load Current – mA
– Output Voltage – V
VO
TPS76515
OUTPUT VOLTAGE
vs
LOAD CURRENT
1.487
1.488
1.489
1.490
1.491
1.492
1.493
1.494
0 25 50 75 100 125 150
VI = 2.7 V
TA = 25°C
Figure 4
TA – Free-Air Temperature – °C
TPS76533
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
– Output Voltage – V
VO
3.310
3.305
3.300
3.295
3.290
3.285
3.280
3.275
3.270
3.265 –25–50 0 25 50 75 100 125 150
VI = 4.3 V IO = 10 µA
IO = 150 mA
Figure 5
TA – Free-Air Temperature – °C
TPS76515
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
– Output Voltage – V
VO
1.505
–50
1.500
1.495
1.490
1.485
1.480
1.475 –25 0 25 50 75 100 125 150
VI = 2.7 V IO = 10 µA
IO = 150 mA
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 6
34.0
34.1
34.2
34.3
34.4
34.5
34.6
34.7
34.8
34.9
35.0
0 25 50 75 100 125 150
IL – Load Current – mA
TPS76533
GROUND CURRENT
vs
LOAD CURRENT
VO = 3.3 V
TA = 25°C
GND
I – Ground Current – Aµ
Figure 7
33.0
33.1
33.2
33.3
33.4
33.5
33.6
33.7
33.8
33.9
34.0
0 25 50 75 100 125 150
IL – Load Current – mA
TPS76515
GROUND CURRENT
vs
LOAD CURRENT
VO = 1.5 V
TA = 25°C
GND
I – Ground Current – Aµ
Figure 8
TA – Free-Air Temperature – °C
TPS76533
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
10
15
20
25
30
35
40
45
50
55
–50 0 50 100 150
VO = 3.3 V
IO = 150 mA
GND
I – Ground Current – Aµ
Figure 9
TA – Free-Air Temperature – °C
TPS76515
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
15
20
25
30
35
40
45
50
55
–50 0 50 100 150
VO = 1.5 V
IO = 150 mA
GND
I – Ground Current – Aµ
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 10
f – Frequency – Hz
TPS76533
POWER SUPPLY RIPPLE REJECTION
vs
FREQUENCY
10
20
30
40
50
60
70
10.00 100.00 1000.0010000.00100000.001000000.0010000000.
0
PSRR – Power Supply Ripple Rejection – dB
VI = 4.3 V
CO = 10 µF
IO = 150 mA
TA = 25°C
10 100 1k 10k 100k 1M 10M
Figure 11
f – Frequency – Hz
TPS76533
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
VI = 4.3 V
CO = 10 µF
TA = 25°C
1k 10k 100k
IO = 150 mA
IO = 1 mA
V HzOutput Spectral Noise Density – µ
101
100
10–1
10–2100
101
100
10–1
10–2
f – Frequency – Hz
TPS76533
OUTPUT IMPEDANCE
vs
FREQUENCY
VI = 4.3 V
CO = 10 µF
TA = 25°C
10 1k 10k 1M
IO = 150 mA
IO = 1 mA
100 100k
– Output Impedance –ZoΩ
Figure 12
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 13
–50 –25 0 25 50 75 100 125 150
TA – Free-Air Temperature – °C
TPS76550
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
100
10–1
10–2
10–3
IO = 10 mA
IO = 50 mA
IO = 150 mA
VI = 4.9 V
CO = 4.7 µF
– Output Voltage – V
VDO
Figure 14
TA – Free-Air Temperature – °C
TPS76533
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
–50 –25 0 25 50 75 100 125 150
VI = 3.2 V
IO = 10 mA
IO = 50 mA
IO = 150 mA
100
10–1
10–2
10–3
– Output Voltage – V
VDO
Figure 15
VO– Change in
50
0
3.7
2.7
TPS76515
LINE TRANSIENT RESPONSE
VI
t – Time – µs
0 300200100 400 500 700600 800 900 1000
– Input Voltage – V ∆
Output Voltage – mV
CL = 4.7 µF
TA = 25°C
–50
100
Figure 16
t – Time – µs
TPS76515
LOAD TRANSIENT RESPONSE
I – Output Current – mA
OVO– Change in∆
Output Voltage – mV
CL = 4.7 µF
TA = 25°C
150
0
0
200
400
–200
–400
0 300200100 400 500 700600 800 900 1000
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 17
VO– Change in
100
50
4.3
TPS76533
LINE TRANSIENT RESPONSE
VI
t – Time – µs
– Input Voltage – V ∆
Output Voltage – mV
CL = 4.7 µF
TA = 25°C
0
5.3
–100
–50
0 300200100 400 500 700600 800 900 1000
Figure 18
t – Time – µs
TPS76533
LOAD TRANSIENT RESPONSE
I – Output Current – mA
OVO– Change in∆
Output Voltage – mV
CL = 4.7 µF
TA = 25°C
150
0
0
200
400
–200
0 300200100 400 500 700600 800 900 1000
Figure 19
t – Time – µs
TPS76533
OUTPUT VOLTAGE
vs
TIME (AT STARTUP)
3
2
VO– Output Voltage – V
0
1
4
Enable Pulse – V
0
0 300200100 400 500 700600 800 900 1000
4.3
Figure 20
VI – Input Voltage – V
– Output Voltage – V
VDO
TPS76501
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
0.00
0.05
0.10
0.15
0.20
0.25
0.30
2.5 3.0 3.5 4.0 4.5 5.0
IO = 150 mA
TA = 125°C
TA = 25°C
TA = –40°C
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 21
0.01
0.10
1.00
10.00
100.00
0 25 50 75 100 125 150
IO – Output Current – mA
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
OUTPUT CURRENT
VI = 4.3 V
CO = 4.7 µF
VO = 3.3 V
TA = 25°C
Minimum ESR
ESR – Equivalent Series Resistance – Ω
Maximum ESR
Region of Stability
102
101
100
10–1
10–2
Region of Instability
Region of Instability
Figure 22
0.01
0.10
1.00
10.00
100.00
0 25 50 75 100 125 150
IO – Output Current – mA
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
OUTPUT CURRENT
VI = 4.3 V
CO = 4.7 µF
VO = 3.3 V
TA = 125°CMinimum ESR
ESR – Equivalent Series Resistance – Ω
Maximum ESR
Region of Stability
Region of Instability
102
101
100
10–2
10–1
Region of Instability
Figure 23
0.01
0.10
1.00
10.00
100.00
0 25 50 75 100 125 150
IO – Output Current – mA
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
OUTPUT CURRENT
VI = 4.3 V
CO = 10 µF
VO = 3.3 V
TA = 25°C
Minimum ESR
ESR – Equivalent Series Resistance – Ω
Maximum ESR
Region of Stability
Region of Instability
102
101
100
10–2
10–1
Region of Instability
Figure 24
100
10–2 0 25 50 75 100 125 150
IO – Output Current – mA
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
OUTPUT CURRENT
VI = 4.3 V
CO = 10 µF
VO = 3.3 V
TA = 125°C
Minimum ESR
ESR – Equivalent Series Resistance – Ω
Maximum ESR
Region of Stability
Region of Instability
101
100
10–1
Region of Instability
10–2
102
†Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any series resistance added
externally, and PWB trace resistance to CO.
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 25
0.01
0.10
1.00
10.00
0 0.2 0.4 0.6 0.8 1.0
Added Ceramic Capacitance – µF
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
ADDED CERAMIC CAPACITANCE
ESR – Equivalent Series Resistance – Ω
101
100
10–1
10–2
VI = 4.3 V
CO = 4.7 µF
VO = 3.3 V
TA = 25°C
Minimum ESR
Region of Instability
IO = 150 mA
Figure 26
Added Ceramic Capacitance – µF
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE†
vs
ADDED CERAMIC CAPACITANCE
0.01
0.10
1.00
10.00
0 0.2 0.4 0.6 0.8 1.0
ESR – Equivalent Series Resistance – Ω
101
100
10–1
10–2
VI = 4.3 V
VO = 3.3 V
CO = 10 µF
TA = 25°C
Minimum ESR
Region of Instability
101
IO = 150 mA
IN
EN
OUT
+
GND CO
ESR
RL
VITo Load
Figure 27. Test Circuit for Typical Regions of Stability (Figures 20 through 23) (Fixed Output Options)
†Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any series resistance added
externally, and PWB trace resistance to CO.
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
The TPS765xx family includes eight fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V, 3.0 V,
3.3 V, and 5.0 V), and an adjustable regulator, the TPS76501 (adjustable from 1.25 V to 5.5 V).
device operation
The TPS765xx features very low quiescent current, which remains virtually constant even with varying loads.
Conventional LDO regulators use a pnp pass element, the base current of which is directly proportional to the
load current through the regulator (IB = IC/β). The TPS765xx uses a PMOS transistor to pass current; because
the gate of the PMOS is voltage driven, operating current is low and invariable over the full load range.
Another pitfall associated with the pnp-pass element is its tendency to saturate when the device goes into
dropout. The resulting drop in β forces an increase in IB to maintain the load. During power up, this translates
to large start-up currents. Systems with limited supply current may fail to start up. In battery-powered systems,
it means rapid battery discharge when the voltage decays below the minimum required for regulation. The
TPS765xx quiescent current remains low even when the regulator drops out, eliminating both problems.
The TPS765xx family also features a shutdown mode that places the output in the high-impedance state
(essentially equal to the feedback-divider resistance) and reduces quiescent current to 1 µA (typ). If the
shutdown feature is not used, EN should be tied to ground. Response to an enable transition is quick; regulated
output voltage is reestablished in typically 160 µs.
minimum load requirements
The TPS765xx family is stable even at zero load; no minimum load is required for operation.
FB - pin connection (adjustable version only)
The FB pin is an input pin to sense the output voltage and close the loop for the adjustable option . The output
voltage is sensed through a resistor divider network to close the loop as it is shown in Figure 29. Normally, this
connection should be as short as possible; however, the connection can be made near a critical circuit to
improve performance at that point. Internally, FB connects to a high-impedance wide-bandwidth amplifier and
noise pickup feeds through to the regulator output. Routing the FB connection to minimize/avoid noise pickup
is essential.
external capacitor requirements
An input capacitor is not usually required; however, a ceramic bypass capacitor (0.047 µF or larger) improves
load transient response and noise rejection if the TPS765xx is located more than a few inches from the power
supply. A higher-capacitance electrolytic capacitor may be necessary if large (hundreds of milliamps) load
transients with fast rise times are anticipated.
Like all low dropout regulators, the TPS765xx requires an output capacitor connected between OUT and GND
to stabilize the internal control loop. The minimum recommended capacitance value is 4.7 µF and the ESR
(equivalent series resistance) must be between 300-mΩ and 20-Ω. Capacitor values 4.7 µF or larger are
acceptable, provided the ESR is less than 20 Ω. Solid tantalum electrolytic, aluminum electrolytic, and multilayer
ceramic capacitors are all suitable, provided they meet the requirements described previously.
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
external capacitor requirements (continued)
PG
OUT
OUT
6
5
4
IN
IN
EN
GND
3
2
7
8
VI
0.1 µF
PG
VO
4.7 µF
+
TPS765xx
CO
1
NC/FB
300 mΩ
250 kΩ
Figure 28. Typical Application Circuit (Fixed Versions)
programming the TPS76501 adjustable LDO regulator
The output voltage of the TPS76501 adjustable regulator is programmed using an external resistor divider as
shown in Figure 29. The output voltage is calculated using:
VO
+
Vref
ǒ
1
)
R1
R2
Ǔ
(1)
Where
Vref = 1.224 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 7-µA divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose
R2 = 169 kΩ to set the divider current at 7 µA and then calculate R1 using:
R1
+ǒ
VO
Vref
*
1
Ǔ
R2 (2)
OUTPUT
VOLTAGE R1 R2
2.5 V
3.3 V
3.6 V
4.0 V
5.0 V
UNIT
174
287
324
383
523
169
169
169
169
169
kΩ
kΩ
kΩ
kΩ
kΩ
OUTPUT VOLTAGE
PROGRAMMING GUIDE
VO
VIPG
OUT
FB / NC
R1
R2
GND
EN
IN
≤0.8 V
≥2.0 V
TPS76501
PG
0.1 µF250 kΩ
300 mΩ
CO
Figure 29. TPS76501 Adjustable LDO Regulator Programming
TPS76515, TPS76518, TPS76525, TPS76527
TPS76528, TPS76530, TPS76533, TPS76550, TPS76501
ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
power-good indicator
The TPS765xx features a power-good (PG) output that can be used to monitor the status of the regulator . The
internal comparator monitors the output voltage: when the output drops to between 92% and 98% of its nominal
regulated value, the PG output transistor turns on, taking the signal low. The open-drain output requires a pullup
resistor. If not used, it can be left floating. PG can be used to drive power-on reset circuitry or used as a
low-battery indicator.
regulator protection
The TPS765xx PMOS-pass transistor has a built-in back diode that conducts reverse currents when the input
voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the
input and is not internally limited. When extended reverse voltage is anticipated, external limiting may be
appropriate.
The TPS765xx also features internal current limiting and thermal protection. During normal operation, the
TPS765xx limits output current to approximately 0.8 A. When current limiting engages, the output voltage scales
back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device
failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of
the device exceeds 150°C(typ), thermal-protection circuitry shuts it down. Once the device has cooled below
130°C(typ), regulator operation resumes.
power dissipation and junction temperature
Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature
should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation
the regulator can handle in any given application. T o ensure the junction temperature is within acceptable limits,
calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than
or equal to PD(max).
The maximum-power-dissipation limit is determined using the following equation:
PD(max)
+
TJmax
*
TA
R
q
JA
Where
TJmax is the maximum allowable junction temperature
TA is the ambient temperature.
RθJA is the thermal resistance junction-to-ambient for the package, i.e., 176°C/W for the 8-terminal
SOIC.
The regulator dissipation is calculated using:
PD
+ǒ
VI
*
VO
Ǔ
IO
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the
thermal protection circuit.
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)
TPS76501D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76501DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76501DR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76501DRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76515D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76515DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76518D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76518DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76518DR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76518DRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76525D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76525DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76528D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76528DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76530D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76530DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76533D ACTIVE SOIC D 8 75 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)
TPS76533DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76533DR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76533DRG4 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76550D ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76550DG4 ACTIVE SOIC D 8 75 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76550DR ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TPS76550DRG4 ACTIVE SOIC D 8 2500 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.
(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.
PACKAGE OPTION ADDENDUM
www.ti.com 30-Jul-2011
Addendum-Page 3
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.
OTHER QUALIFIED VERSIONS OF TPS76501 :
•Automotive: TPS76501-Q1
NOTE: Qualified Version Definitions:
•Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
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
TPS76501DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TPS76518DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TPS76533DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TPS76550DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TPS76501DR SOIC D 8 2500 367.0 367.0 35.0
TPS76518DR SOIC D 8 2500 367.0 367.0 35.0
TPS76533DR SOIC D 8 2500 367.0 367.0 35.0
TPS76550DR SOIC D 8 2500 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components which meet ISO/TS16949 requirements, mainly for automotive use. Components which
have not been so designated are neither designed nor intended for automotive use; and TI will not be responsible for any failure of such
components to meet such requirements.
Products Applications
Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive
Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications
Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers
DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps
DSP dsp.ti.com Energy and Lighting www.ti.com/energy
Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial
Interface interface.ti.com Medical www.ti.com/medical
Logic logic.ti.com Security www.ti.com/security
Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense
Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video
RFID www.ti-rfid.com
OMAP Applications Processors www.ti.com/omap TI E2E Community e2e.ti.com
Wireless Connectivity www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2012, Texas Instruments Incorporated