TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
D
D
D
D
D
D
D
D
DBV PACKAGE
(TOP VIEW)
100-mA Low-Dropout Regulator
Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V,
2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and
Adjustable Versions
Only 17 µA Quiescent Current at 100 mA
1 µA Quiescent Current in Standby Mode
Dropout Voltage Typically 71 mV at 100mA
Over Current Limitation
–40°C to 125°C Operating Junction
Temperature Range
5-Pin SOT-23 (DBV) Package
IN
1
GND
2
EN
3
5
OUT
4
NC/FB
TPS76933
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
22
description
21
Ground Current – µ A
The TPS769xx family of low-dropout (LDO)
voltage regulators offers the benefits of low
dropout voltage, ultralow-power operation, and
miniaturized packaging. These regulators feature
low dropout voltages and ultralow quiescent
current compared to conventional LDO
regulators. Offered in a 5-terminal small outline
integrated-circuit
SOT-23
package,
the
TPS769xx series devices are ideal for
micropower operations and where board space is
at a premium.
VI = 4.3 V
CO = 4.7 µF
20
19
IO = 100 mA
18
IO = 0 mA
17
A combination of new circuit design and process
16
innovation has enabled the usual PNP pass
transistor to be replaced by a PMOS pass
15
element. Because the PMOS pass element
–60 –40 –20 0
20 40 60 80 100 120 140
behaves as a low-value resistor, the dropout
TA – Free-Air Temperature – °C
voltage is very low, typically 71 mV at 100 mA of
load current (TPS76950), and is directly proportional to the load current. Since the PMOS pass element is a
voltage-driven device, the quiescent current is ultralow (28 µA maximum) and is stable over the entire range
of output load current (0 mA to 100 mA). Intended for use in portable systems such as laptops and cellular
phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in
system battery operating life.
The TPS769xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 1 µA typical at TJ = 25°C. The TPS769xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V,
and 5-V fixed-voltage versions and in a variable version (programmable over the range of 1.2 V to 5.5 V).
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.
Copyright 2001, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
AVAILABLE OPTIONS
VOLTAGE
TJ
PACKAGE
PART NUMBER
SYMBOL
Variable
1.2V to 5.5V
TPS76901DBVT†
TPS76901DBVR‡
PCFI
1.2 V
TPS76912DBVT†
TPS76915DBVT†
TPS76912DBVR‡
TPS76915DBVR‡
PCGI
TPS76918DBVT†
TPS76925DBVT†
TPS76918DBVR‡
TPS76925DBVR‡
TPS76927DBVT†
TPS76928DBVT†
TPS76927DBVR‡
TPS76928DBVR‡
PCKI
TPS76930DBVR‡
TPS76933DBVR‡
PCMI
3.3 V
TPS76930DBVT†
TPS76933DBVT†
5.0 V
TPS76950DBVT†
TPS76950DBVR‡
PCOI
1.5 V
1.8 V
SOT-23
(DBV)
2.5 V
–40°C to 125°C
2.7 V
2.8 V
3.0 V
† The DBVT indicates tape and reel of 250 parts.
‡ The DBVR indicates tape and reel of 3000 parts.
functional block diagram
TPS76901
OUT
IN
EN
Current Limit
/ Thermal
Protection
VREF
FB
GND
TPS76912/15/18/25/27/28/30/33/50
OUT
IN
EN
VREF
Current Limit
/ Thermal
Protection
GND
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PCHI
PCII
PCJI
PCLI
PCNI
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
Terminal Functions
TERMINAL
NAME
I/O
NO.
DESCRIPTION
GND
2
Ground
EN
3
I
Enable input
FB
4
I
Feedback voltage (TPS76901 only)
IN
1
I
Input supply voltage
NC
4
OUT
5
No connection (Fixed options only)
O
Regulated output voltage
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)Ĕ
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 13.5 V
Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VI + 0.3 V
Voltage on OUT, FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
† 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 affect device reliability.
NOTE 1: All voltage values are with respect to network ground terminal.
DISSIPATION RATING TABLE
BOARD
PACKAGE
RθJC
RθJA
DERATING FACTOR
ABOVE TA = 25°C
TA ≤ 25°C
POWER RATING
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
Low K‡
High K§
DBV
65.8 °C/W
259 °C/W
3.9 mW/°C
386 mW
212 mW
154 mW
DBV
65.8 °C/W
180 °C/W
5.6 mW/°C
555 mW
305 mW
222 mW
‡ The JEDEC Low K (1s) board design used to derive this data was a 3 inch x 3 inch, two layer board with 2 ounce copper traces on top of the board.
§ The JEDEC High K (2s2p) board design used to derive this data was a 3 inch x 3 inch, multilayer board with 1 ounce internal power and ground
planes and 2 ounce copper traces on top and bottom of the board.
recommended operating conditions
MIN
NOM
MAX
UNIT
Input voltage, VI (see Note 2)
2.7
10
V
Output voltage range, VO
1.2
5.5
V
0
100
mA
–40
125
°C
Continuous output current, IO (see Note 3)
Operating junction temperature, TJ
NOTES: 2. To calculate the minimum input voltage for your maximum output current, use the following formula:
VI(min) = VO(max) + VDO (max load)
3. Continuous output 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
electrical characteristics over recommended operating free-air temperature range,
VI = VO(typ) + 1 V, IO = 100 mA, EN = 0 V, Co = 4.7 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
1.2 V ≤ VO ≤ 5.5 V,
TPS76901
Output voltage
g (10
( µ
µA to 100 mA
load) (see Note 4)
MIN
TJ = 25°C
TJ = –40°C to 125°C
1.2 V ≤ VO ≤ 5.5 V,
TPS76912
TJ = 25°C,
TJ = –40°C to 125°C,
2.7 V < VIN < 10 V
TPS76915
TJ = 25°C,
TJ = –40°C to 125°C,
2.7 V < VIN < 10 V
TPS76918
TJ = 25°C,
TJ = –40°C to 125°C,
2.8 V < VIN < 10 V
TPS76925
TJ = 25°C,
TJ = –40°C to 125°C,
TPS76927
TJ = 25°C,
TJ = –40°C to 125°C,
3.7 V < VIN < 10 V
TPS76928
TJ = 25°C,
TJ = –40°C to 125°C,
3.8 V < VIN < 10 V
TPS76930
TJ = 25°C,
TJ = –40°C to 125°C,
4.0 V < VIN < 10 V
TPS76933
TJ = 25°C,
TJ = –40°C to 125°C,
TPS76950
TJ = 25°C,
TJ = –40°C to 125°C,
6.0 V < VIN < 10 V
EN = 0V,
TJ = 25°C
0 mA < IO < 100 mA,
EN = 0V,
TJ = –40°C to 125°C
IO = 100 mA,
EN = 0V,
TJ = 25°C
IO = 0 to 100 mA,
Quiescent current ((GND current))
(see Notes 4 and 5)
Load regulation
Output voltage line regulation (∆VO/VO) (see Note 5)
2.7 V < VIN < 10 V
2.7 V < VIN < 10 V
Output current limit
1.261
1.5
1.455
1.545
1.8
1.854
2.5
2.575
2.7
2.619
V
2.781
2.8
2.716
2.884
3.0
4.0 V < VIN < 10 V
4.3 V < VIN < 10 V
2.910
4.3 V < VIN < 10 V
3.201
3.090
3.3
3.399
5.0
4.850
5.150
17
µA
28
VO + 1 V < VI ≤ 10 V, TJ = 25°C,
See Note 4
12
mV
0.04
%/V
VO + 1 V < VI ≤ 10 V,
TJ = –40°C to 125°C, See Note 4
VO = 0 V,
EN = VI,
Standby current
1.03VO
1.187
2.425
6.0 V < VIN < 10 V
UNIT
1.224
3.5 V < VIN < 10 V
0.1
BW = 300 Hz to 50 kHz,
Co = 10 µF,
TJ = 25°C
Output noise voltage
0.97VO
1.746
3.8 V < VIN < 10 V
MAX
VO
2.8 V < VIN < 10 V
3.5 V < VIN < 10 V
3.7 V < VIN < 10 V
TYP
µVrms
190
See Note 4
350
2.7 < VI < 10 V
1
750
mA
µA
TJ = –40°C to 125°C
2
µA
NOTES: 4. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current
10 µA, maximum output current 100 mA.
5. If VO ≤ 1.8 V then VImin = 2.7 V, VImax = 10 V:
Line Reg. (mV)
+ ǒ%ńVǓ
V
O
If VO ≥ 2.5 V then VImin = VO + 1 V, VImax = 10 V:
Line Reg. (mV)
4
+ ǒ%ńVǓ
V
O
ǒ
V
ǒ
V
POST OFFICE BOX 655303
Ǔ
* 2.7 V
Imax
100
Imax
*
ǒ
V
O
1000
ǓǓ
)1 V
100
• DALLAS, TEXAS 75265
1000
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
electrical characteristics over recommended operating free-air temperature range,
VI = VO(typ) + 1 V, IO = 100 mA, EN = 0 V, Co = 4.7 µF (unless otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
MIN
FB input current
FB = 1.224 V (TPS76901)
–1
High level enable input voltage
2.7 V < VI < 10 V
1.7
Low level enable input voltage
2.7 V < VI < 10 V
Power supply ripple rejection
f = 1 kHz,
TJ = 25°C,
Co = 10 µF,
See Note 4
TPS76930
Dropout voltage (see Note 6)
TPS76933
TPS76950
UNIT
µA
1
V
V
60
–1
EN = VI
TPS76928
MAX
0.9
EN = 0 V
Input current (EN)
TYP
0
–1
IO = 50 mA,
IO = 50 mA,
TJ = 25°C
TJ = –40°C to 125°C
60
IO = 100 mA,
IO = 100 mA,
TJ = 25°C
TJ = –40°C to 125°C
122
IO = 50 mA,
IO = 50 mA,
TJ = 25°C
TJ = –40°C to 125°C
57
IO = 100 mA,
IO = 100 mA,
TJ = 25°C
TJ = –40°C to 125°C
115
IO = 50 mA,
IO = 50 mA,
TJ = 25°C
TJ = –40°C to 125°C
48
IO = 100 mA,
IO = 100 mA,
TJ = 25°C
TJ = –40°C to 125°C
98
IO = 50 mA,
IO = 50 mA,
TJ = 25°C
TJ = –40°C to 125°C
35
IO = 100 mA,
IO = 100 mA,
TJ = 25°C
TJ = –40°C to 125°C
71
dB
1
µA
1
µA
125
245
115
230
mV
100
200
85
170
NOTES: 4. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current
10 µA, maximum output current 100 mA.
6. IN voltage equals VO(Typ) – 100mV; TPS76901 output voltage set to 3.3V nominal with external resistor divider. TPS76912,
TPS76915, TPS76918, TPS76925, and TPS76927 dropout voltage limited by input voltage range limitations.
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
VO
Zo
VDO
Output voltage
vs Output current
1, 2, 3
vs Free-air temperature
4, 5, 6
Ground current
vs Free-air temperature
7
Output spectral noise density
vs Frequency
8
Output impedance
vs Frequency
9
Dropout voltage
vs Free-air temperature
10
Ripple rejection
vs Frequency
LDO startup time
11
12
Line transient response
13, 15
Load transient response
14, 16
Equivalent series resistance (ESR)
POST OFFICE BOX 655303
vs Output current
17, 19
vs Added ceramic capacitance
18, 20
• DALLAS, TEXAS 75265
5
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76925
TPS76915
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
1.498
2.498
VI = 3.5 V
CO = 4.7 µF
TA = 25° C
2.496
1.496
VO – Output Voltage – V
2.494
VO – Output Voltage – V
VI = 2.7 V
CO = 4.7 µF
TA = 25° C
2.492
2.490
2.488
2.486
1.494
1.492
1.490
1.488
1.486
2.484
1.484
2.482
0
20
40
60
80
0
100
20
40
60
Figure 1
TPS76933
TPS76915
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
1.496
VI = 4.3 V
CO = 4.7 µF
TA = 25° C
3.282
1.494
IO = 1 mA
VI = 2.7 V
CO = 4.7 µF
1.492
3.280
VO – Output Voltage – V
VO – Output Voltage – V
100
Figure 2
3.284
3.278
3.276
3.274
3.272
1.490
1.488
1.486
IO = 100 mA
1.484
1.482
3.270
0
20
40
60
80
100
1.480
–60 –40 –20
0
20
40
Figure 3
Figure 4
POST OFFICE BOX 655303
60
80 100 120 140
TA – Free-Air Temperature – °C
IO – Output Current – mA
6
80
IO – Output Current – mA
IO – Output Current – mA
• DALLAS, TEXAS 75265
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76925
TPS76933
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
2.496
3.285
2.494
IO = 1 mA
VO – Output Voltage – V
VO – Output Voltage – V
2.490
2.488
2.486
2.484
IO = 100 mA
2.482
2.480
2.476
–60 –40 –20
0
20
40
60
VI = 4.3 V
CO = 4.7 µF
3.275
3.270
IO = 100 mA
3.265
3.260
VI = 3.5 V
CO = 4.7 µF
2.478
IO = 1 mA
3.280
2.492
3.255
–60 –40 –20
80 100 120 140
TA – Free-Air Temperature – °C
Figure 5
TPS76933
40
60
80 100 120 140
TPS76933
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
22
2
VI = 4.3 V
CO = 4.7 µF
Output Spectral Noise Density – µV Hz
Ground Current – µ A
20
Figure 6
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
21
0
TA – Free-Air Temperature – °C
20
IO = 100 mA
19
18
IO = 0 mA
17
16
15
–60 –40 –20
0
20
40
60
80 100 120 140
1.8
CO = 10 µF
IO = 1 mA
1.6
CO = 4.7 µF
IO = 100 mA
1.4
1.2
1
0.8
CO = 4.7 µF
IO = 1 mA
0.6
0.4
0.2
VI = 4.3 V
0
100
TA – Free-Air Temperature – °C
CO = 10 µF
IO = 100 mA
1k
10k
f – Frequency – Hz
100k
Figure 8
Figure 7
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76933
OUTPUT IMPEDANCE
vs
FREQUENCY
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
2
Zo – Output Impedance – Ω
1.6
VI = 3.2 V
CO = 4.7 µF
VDO – Dropout Voltage – mV
1.8
1000
VI = 4.3 V
CO = 4.7 µF
ESR = 0.3 Ω
TA = 25° C
1.4
1.2
1
0.8
IO = 1 mA
0.6
0.4
IO = 100 mA
10
IO = 10 mA
IO = 100 mA
0.2
0
10
100
100
1k
10 k
100 k
1M
1
–60 –40 –20
0
20
40
60
80 100 120 140
TA – Free-Air Temperature – °C
f – Frequency – Hz
Figure 9
Figure 10
TPS76933
RIPPLE REJECTION
vs
FREQUENCY
100
LDO STARTUP TIME
90
Ripple Rejection – dB
80
EN
70
IO = 1 mA
60
50
40
30
IO = 100 mA
20
10
0
– 10
10
VI = 4.3 V
CO = 4.7 µF
ESR = 0.3 Ω
100
VO
1k
10 k
100 k
1M
10 M
0
20
f – Frequency – Hz
60
80 100 120 140 160 180 200
t – Time – µs
Figure 12
Figure 11
8
40
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
10
0
–10
3.7
VI – Input Voltage – V
TPS76915
LOAD TRANSIENT RESPONSE
Current Load – mA
TPS76915
LINE TRANSIENT RESPONSE
2.7
IL = 10 mA
CO = 4.7 µF
ESR = 0.3 Ω
0
20
40
60
100
0
∆ VO – Change In
Output Voltage – mV
VO – Output Voltage – mV
TYPICAL CHARACTERISTICS
0
–200
VI = 2.7 V
CO = 10 µF
ESR = 0.3 Ω
–400
0
80 100 120 140 160 180 200
t – Time – µs
20
40
10
0
–10
∆ VO – Change In
Output Voltage – mV
5.3
VI – Input Voltage – V
TPS76933
LOAD TRANSIENT RESPONSE
Current Load – mA
VO – Output Voltage – mV
TPS76933
LINE TRANSIENT RESPONSE
4.3
IL = 10 mA
CO = 4.7 µF
ESR = 0.3 Ω
20
40
60
80 100 120 140 160 180 200
t – Time – µs
Figure 14
Figure 13
0
60
80 100 120 140 160 180
t – Time – µs
100
0
VI = 4.3 V
CO = 4.7 µF
ESR = 0.3 Ω
100
0
–100
0
20
40
60
80 100 120 140 160 180
t – Time – µs
Figure 16
Figure 15
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76933
TYPICAL REGIONS OF STABILITY
TPS76933
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)†
vs
OUTPUT CURRENT
EQUIVALENT SERIES RESISTANCE (ESR)
vs
ADDED CERAMIC CAPACITANCE
100
VIN = 4.3 V
CO = 4.7 µF
3.3 V LDO
ESR – Equivalent Series Resistance – Ω
ESR – Equivalent Series Resistance – Ω
100
Region of Instability
10
Region of Stability
1
VIN = 4.3 V
CO = 4.7 µF
IL = 100 mA
Region of Instability
10
Region of Stability
0.2
0.1
1
0
25
50
75
0
100
0.1
0.6 0.7 0.8
0.9
1
Added Ceramic Capacitance – µF
IO – Output Current – mA
Figure 18
Figure 17
TPS76933
TYPICAL REGIONS OF STABILITY
TPS76933
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)†
vs
OUTPUT CURRENT
EQUIVALENT SERIES RESISTANCE (ESR)
vs
ADDED CERAMIC CAPACITANCE
100
100
VIN = 4.3 V
CO = 10 µF
3.3 V LDO
ESR – Equivalent Series Resistance – Ω
ESR – Equivalent Series Resistance – Ω
0.2 0.3 0.4 0.5
Region of Instability
10
1
Region of Stability
VIN = 4.3 V
CO = 10 µF
IL = 100 mA
Region of Instability
10
Region of Stability
0.2
0.1
1
0
25
50
75
100
0
0.1
Figure 20
Figure 19
10
0.2 0.3 0.4 0.5
POST OFFICE BOX 655303
0.6 0.7 0.8
Added Ceramic Capacitance – µF
IO – Output Current – mA
• DALLAS, TEXAS 75265
0.9
1
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
APPLICATION INFORMATION
The TPS769xx family of low-dropout (LDO) regulators have been optimized for use in battery-operated
equipment. They feature extremely low dropout voltages, low quiescent current (17 µA nominally), and enable
inputs to reduce supply currents to 1 µA when the regulators are turned off.
device operation
The TPS769xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over
more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device
and, unlike a PNP transistor, it does not require increased drive current as output current increases. Supply
current in the TPS769xx is essentially constant from no load to maximum load.
Current limiting and thermal protection prevent damage by excessive output current and/or power dissipation.
The device switches into a constant-current mode at approximately 350 mA; further load reduces the output
voltage instead of increasing the output current. The thermal protection shuts the regulator off if the junction
temperature rises above approximately 165°C. Recovery is automatic when the junction temperature drops
approximately 25°C below the high temperature trip point. The PMOS pass element includes a back gate diode
that conducts reverse current when the input voltage level drops below the output voltage level.
A voltage of 1.7 V or greater on the EN input will disable the TPS769xx internal circuitry, reducing the supply
current to 1µA. A voltage of less than 0.9 V on the EN input will enable the TPS769xx and will enable normal
operation to resume. The EN input does not include any deliberate hysteresis, and it exhibits an actual switching
threshold of approximately 1.5 V.
A typical application circuit is shown in Figure 21.
TPS769xx†
VI
C1
1 µF
1
IN
NC/FB
OUT
4
5
VO
3
EN
+
GND
2
4.7 µF
ESR = 0.2 Ω
† TPS76912, TPS76915, TPS76918, TPS76925, TPS76927, TPS76928,
TPS76930, TPS76933, TPS76950 (fixed-voltage options).
Figure 21. Typical Application Circuit
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
APPLICATION INFORMATION
external capacitor requirements
Although not required, a 0.047-µF or larger ceramic input bypass capacitor, connected between IN and GND
and located close to the TPS769xx, is recommended to improve transient response and noise rejection. A
higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated
and the device is located several inches from the power source.
Like all low dropout regulators, the TPS769xx requires an output capacitor connected between OUT and GND
to stabilize the internal control loop. The minimum recommended capacitance is 4.7 µF. The ESR (equivalent
series resistance) of the capacitor should be between 0.2 Ω and 10 Ω. to ensure stability. Capacitor values larger
than 4.7 µF are acceptable, and allow the use of smaller ESR values. Capacitances less than 4.7 µF are not
recommended because they require careful selection of ESR to ensure stability. Solid tantalum electrolytic,
aluminum electrolytic, and multilayer ceramic capacitors are all suitable, provided they meet the requirements
described above. Most of the commercially available 4.7 µF surface-mount solid tantalum capacitors, including
devices from Sprague, Kemet, and Nichico, meet the ESR requirements stated above. Multilayer ceramic
capacitors may have very small equivalent series resistances and may thus require the addition of a low value
series resistor to ensure stability.
CAPACITOR SELECTION
PART NO.
MAX ESR†
SIZE (H × L × W)†
MFR.
VALUE
T494B475K016AS
KEMET
4.7 µF
1.5 Ω
1.9 × 3.5 × 2.8
195D106x0016x2T
SPRAGUE
10 µF
1.5 Ω
1.3 × 7.0 × 2.7
695D106x003562T
SPRAGUE
10 µF
1.3 Ω
2.5 × 7.6 × 2.5
AVX
4.7 µF
0.6 Ω
2.6 × 6.0 × 3.2
TPSC475K035R0600
† Size is in mm. ESR is maximum resistance in Ohms at 100 kHz and TA = 25°C. Contact manufacturer for minimum ESR values.
12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
APPLICATION INFORMATION
output voltage programming
The output voltage of the TPS76901 adjustable regulator is programmed using an external resistor divider as
shown in Figure 22. The output voltage is calculated using:
V
O
ǒ) Ǔ
+ Vref
1
R1
R2
(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 Ǔ
V
V
O
ref
*1
(2)
R2
OUTPUT VOLTAGE
PROGRAMMING GUIDE
OUTPUT
VOLTAGE
(V)
2.5
TPS76901
DIVIDER RESISTANCE
(kΩ)‡
R1
R2
174
169
3.3
287
169
3.6
324
169
4.0
383
169
5.0
523
169
VI
1 µF
1
IN
OUT
≥ 1.7 V
3
VO
R1
EN
≤ 0.9 V
FB
GND
2
‡ 1% values shown.
5
4
4.7 µF
R2
ESR = 0.2 Ω
Figure 22. TPS76901 Adjustable LDO Regulator Programming
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
13
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203E – JUNE 1999 – REVISED MAY 2001
APPLICATION INFORMATION
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. To 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:
P
T max * T
J
A
+
D(max)
R
qJA
Where:
TJmax is the maximum allowable junction temperature
RθJA is the thermal resistance junction-to-ambient for the package, see the dissipation rating table.
TA is the ambient temperature.
ǒ
Ǔ
The regulator dissipation is calculated using:
P
D
+ VI * VO
I
O
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the
thermal protection circuit.
regulator protection
The TPS769xx PMOS-pass transistor has a built-in back diode that conducts reverse current 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. If extended reverse voltage operation is anticipated, external limiting might
be appropriate.
The TPS769xx features internal current limiting and thermal protection. During normal operation, the TPS769xx
limits output current to approximately 350 mA. 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 approximately 165°C, thermal-protection circuitry shuts it down. Once the device has cooled down to
below approximately 140°C, regulator operation resumes.
14
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
TPS76901DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCFI
Samples
TPS76901DBVRG4
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCFI
Samples
TPS76901DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCFI
Samples
TPS76901DBVTG4
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCFI
Samples
TPS76912DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCGI
Samples
TPS76912DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCGI
Samples
TPS76915DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCHI
Samples
TPS76915DBVRG4
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCHI
Samples
TPS76915DBVT
LIFEBUY
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCHI
TPS76918DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCII
Samples
TPS76918DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCII
Samples
TPS76918DBVTG4
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCII
Samples
TPS76925DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCJI
Samples
TPS76925DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCJI
Samples
TPS76927DBVR
LIFEBUY
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCKI
TPS76927DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCKI
Samples
TPS76928DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCLI
Samples
TPS76928DBVRG4
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCLI
Samples
TPS76928DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCLI
Samples
TPS76930DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCMI
Samples
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
10-Dec-2022
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
TPS76930DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCMI
Samples
TPS76933DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCNI
Samples
TPS76933DBVRG4
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCNI
Samples
TPS76933DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCNI
Samples
TPS76950DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCOI
Samples
TPS76950DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PCOI
Samples
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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