TPS76915QDBVTQ1 [TI]
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS; 超低功耗100mA低压降线性稳压器
| 型号： | TPS76915QDBVTQ1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS |
| 文件： | 总16页 (文件大小：240K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
DBV PACKAGE
(TOP VIEW)
Qualification in Accordance With
AEC-Q100
†
Qualified for Automotive Applications
100-mA Low-Dropout Regulator
1
2
3
5
OUT
IN
GND
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
4
NC/FB
EN
Only 17 µA Quiescent Current at 100 mA
1 µA Quiescent Current in Standby Mode
Dropout Voltage Typically 71 mV at 100 mA
Over Current Limitation
TPS76933
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
–40°C to 125°C Operating Junction
22
21
20
19
18
17
16
15
Temperature Range
V = 4.3 V
I
5-Pin SOT-23 (DBV) Package
C
= 4.7 µF
O
description
The TPS769xx-Q1 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-Q1seriesdevicesareidealformicropower
operations and where board space is at a premium.
I
O
= 100 mA
I
= 0 mA
O
A combination of new circuit design and process
innovation has enabled the usual PNP pass transistor
to be replaced by a PMOS pass element. Because the
PMOS pass element behaves as a low-value resistor,
–60 –40 –20
0
20 40 60 80 100 120 140
T
A
– Free-Air Temperature – °C
the
dropout
voltage is very low, typically 71 mV at 100 mA of load current (TPS76950-Q1), 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). The ultralow-dropout
voltage feature and ultralow-power operation result in a significant increase in system battery operating life, making
this device suitable for use in automotive applications.
The TPS769xx-Q1 also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 1 µA typical at T = 25°C. The TPS769xx-Q1 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
J
5-V fixed-voltage versions and in a variable version (programmable over the range of 1.2 V to
5.5 V).
†
Contact factory for details. Q100 qualification data available on request.
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 2002, 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
AVAILABLE OPTIONS
T
J
VOLTAGE
PACKAGE
PART NUMBER
SYMBOL
Variable
1.2V to 5.5V
†
‡
TPS76901QDBVTQ1
TPS76901QDBVRQ1
PCFQ
†
†
†
†
†
†
†
†
†
‡
‡
‡
‡
‡
‡
‡
‡
‡
1.2 V
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
3.0 V
3.3 V
5.0 V
TPS76912QDBVTQ1
TPS76915QDBVTQ1
TPS76918QDBVTQ1
TPS76925QDBVTQ1
TPS76927QDBVTQ1
TPS76928QDBVTQ1
TPS76930QDBVTQ1
TPS76933QDBVTQ1
TPS76950QDBVTQ1
TPS76912QDBVRQ1
TPS76915QDBVRQ1
TPS76918QDBVRQ1
TPS76925QDBVRQ1
TPS76927QDBVRQ1
TPS76928QDBVRQ1
TPS76930QDBVRQ1
TPS76933QDBVRQ1
TPS76950QDBVRQ1
PCGQ
PCHQ
PCIQ
SOT-23
(DBV)
PCJQ
PCKQ
PCLQ
PCMQ
PCNQ
PCOQ
–40°C to 125°C
†
‡
The DBVT indicates tape and reel of 250 parts.
The DBVR indicates tape and reel of 3000 parts.
functional block diagram
TPS76901-Q1
OUT
IN
EN
Current Limit
/ Thermal
Protection
V
REF
FB
GND
TPS76912/15/18/25/27/28/30/33/50-Q1
OUT
IN
EN
Current Limit
/ Thermal
Protection
V
REF
GND
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
Terminal Functions
TERMINAL
NAME
I/O
DESCRIPTION
NO.
2
GND
EN
Ground
3
I
I
I
Enable input
FB
4
Feedback voltage (TPS76901-Q1 only)
Input supply voltage
IN
1
NC
OUT
4
No connection (Fixed options only)
Regulated output voltage
5
O
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 13.5 V
Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V + 0.3 V
I
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, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 150°C
J
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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
DERATING FACTOR
T
A
≤ 25°C
T
A
= 70°C
T = 85°C
A
BOARD
PACKAGE
R
R
θJA
θJC
ABOVE T = 25°C
POWER RATING POWER RATING POWER RATING
A
‡
Low K
DBV
DBV
65.8 °C/W
65.8 °C/W
259 °C/W
180 °C/W
3.9 mW/°C
5.6 mW/°C
386 mW
555 mW
212 mW
305 mW
154 mW
222 mW
§
High K
‡
§
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
10
UNIT
V
Input voltage, V (see Note 2)
2.7
1.2
0
I
Output voltage range, V
5.5
V
O
Continuous output current, I (see Note 3)
100
125
mA
°C
O
Operating junction temperature, T
–40
J
NOTES: 2. To calculate the minimum input voltage for your maximum output current, use the following formula:
V (min) = V (max) + V (max load)
I
O
DO
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.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
electrical characteristics over recommended operating free-air temperature range,
V = V
+ 1 V, I = 100 mA, EN = 0 V, C = 4.7 µF (unless otherwise noted)
I
O(typ)
O
o
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
1.2 V ≤ V ≤ 5.5 V,
T
T
= 25°C
V
O
O
J
TPS76901-Q1
TPS76912-Q1
TPS76915-Q1
TPS76918-Q1
TPS76925-Q1
TPS76927-Q1
TPS76928-Q1
TPS76930-Q1
TPS76933-Q1
TPS76950-Q1
1.2 V ≤ V ≤ 5.5 V,
= –40°C to 125°C 0.97V
1.03V
O
J
O
O
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
= 25°C,
2.7 V < V < 10 V
IN
1.224
1.5
1.8
2.5
2.7
2.8
3.0
3.3
5.0
= –40°C to 125°C, 2.7 V < V < 10 V
IN
1.187
1.261
= 25°C,
2.7 V < V < 10 V
IN
= –40°C to 125°C, 2.7 V < V < 10 V
IN
1.455
1.746
2.425
2.619
2.716
2.910
3.201
4.850
1.545
1.854
2.575
2.781
2.884
3.090
3.399
5.150
= 25°C,
2.8 V < V < 10 V
IN
= –40°C to 125°C, 2.8 V < V < 10 V
IN
= 25°C,
3.5 V < V < 10 V
IN
= –40°C to 125°C, 3.5 V < V < 10 V
IN
Output voltage (10 µA to 100 mA load)
(see Note 4)
V
= 25°C,
3.7 V < V < 10 V
IN
= –40°C to 125°C, 3.7 V < V < 10 V
IN
= 25°C,
3.8 V < V < 10 V
IN
= –40°C to 125°C, 3.8 V < V < 10 V
IN
= 25°C,
4.0 V < V < 10 V
IN
= –40°C to 125°C, 4.0 V < V < 10 V
IN
= 25°C,
4.3 V < V < 10 V
IN
= –40°C to 125°C, 4.3 V < V < 10 V
IN
= 25°C,
6.0 V < V < 10 V
IN
= –40°C to 125°C, 6.0 V < V < 10 V
IN
EN = 0V,
= 25°C
0 mA < I < 100 mA,
O
17
T
J
Quiescent current (GND current)
(see Notes 4 and 5)
µA
mV
EN = 0V,
= –40°C to 125°C
I
O
I
O
= 100 mA,
= 0 to 100 mA,
= 25°C,
28
T
J
EN = 0V,
= 25°C
Load regulation
12
T
J
V
+ 1 V < V ≤ 10 V, T
I J
O
0.04
See Note 4
Output voltage line regulation (∆V /V
)
(see Note 5)
%/V
O
O
V
+ 1 V < V ≤ 10 V,
= –40°C to 125°C, See Note 4
O
I
0.1
T
J
BW = 300 Hz to 50 kHz,
Output noise voltage
Output current limit
190
µVrms
C
= 10 µF,
T = 25°C
J
o
V
0 V,
See Note 4
2.7 < V < 10 V
350
1
750
2
mA
µA
µA
O =
EN = V ,
I
I
Standby current
T
J
= –40°C to 125°C
NOTES: 4. Minimum IN operating voltage is 2.7 V or V
+ 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current
O(typ)
10 µA, maximum output current 100 mA.
5. If V ≤ 1.8 V then V
= 2.7 V, V
= 10 V:
O
Imin
Imax
V
V
2.7 V
O
O
Imax
100
Line Reg. (mV)
% V
1000
If V ≥ 2.5 V then V
Imin
= V + 1 V, V
O Imax
= 10 V:
O
V
V
V
1 V
Imax
O
Line Reg. (mV)
% V
1000
100
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
electrical characteristics over recommended operating free-air temperature range,
V = V
+ 1 V, I = 100 mA, EN = 0 V, C = 4.7 µF (unless otherwise noted) (continued)
I
O(typ)
O
o
PARAMETER
TEST CONDITIONS
FB = 1.224 V (TPS76901-Q1)
2.7 V < V < 10 V
MIN
–1
TYP
MAX
UNIT
µA
V
FB input current
1
High level enable input voltage
Low level enable input voltage
1.7
I
2.7 V < V < 10 V
I
0.9
V
f = 1 kHz,
C = 10 µF,
o
See Note 4
Power supply ripple rejection
Input current (EN)
60
0
dB
T
J
= 25°C,
EN = 0 V
EN = V
–1
–1
1
1
µA
µA
I
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
= 50 mA,
= 50 mA,
= 100 mA,
= 100 mA,
= 50 mA,
= 50 mA,
= 100 mA,
= 100 mA,
= 50 mA,
= 50 mA,
= 100 mA,
= 100 mA,
= 50 mA,
= 50 mA,
= 100 mA,
= 100 mA,
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
T
J
= 25°C
60
122
57
= –40°C to 125°C
= 25°C
125
245
115
230
100
200
85
TPS76928-Q1
TPS76930-Q1
TPS76933-Q1
TPS76950-Q1
= –40°C to 125°C
= 25°C
= –40°C to 125°C
= 25°C
115
48
= –40°C to 125°C
= 25°C
Dropout voltage (see Note 6)
mV
= –40°C to 125°C
= 25°C
98
= –40°C to 125°C
= 25°C
35
= –40°C to 125°C
= 25°C
71
= –40°C to 125°C
170
NOTES: 4. Minimum IN operating voltage is 2.7 V or V
+ 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current
O(typ)
10 µA, maximum output current 100 mA.
6. IN voltage equals V (Typ) – 100mV; TPS76901-Q1 output voltage set to 3.3V nominal with external resistor divider. TPS76912-Q1,
O
TPS76915-Q1, TPS76918-Q1, TPS76925-Q1, and TPS76927-Q1 dropout voltage limited by input voltage range limitations.
TY
PICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Output current
vs Free-air temperature
vs Free-air temperature
vs Frequency
1, 2, 3
4, 5, 6
7
V
Output voltage
O
Ground current
Output spectral noise density
Output impedance
Dropout voltage
8
Z
o
vs Frequency
9
V
DO
vs Free-air temperature
vs Frequency
10
Ripple rejection
11
LDO startup time
12
Line transient response
Load transient response
13, 15
14, 16
17, 19
18, 20
vs Output current
Equivalent series resistance (ESR)
vs Added ceramic capacitance
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
TPS76925
TPS76915
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
1.498
1.496
1.494
1.492
1.490
1.488
2.498
2.496
2.494
2.492
2.490
2.488
2.486
V = 2.7 V
I
V = 3.5 V
I
C
= 4.7 µF
= 25° C
O
C
= 4.7 µF
= 25° C
O
T
A
T
A
1.486
1.484
2.484
2.482
0
20
40
60
80
100
0
20
40
60
80
100
I
O
– Output Current – mA
I
O
– Output Current – mA
Figure 1
Figure 2
TPS76915
TPS76933
OUTPUT VOLTAGE
vs
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
OUTPUT CURRENT
1.496
1.494
1.492
1.490
1.488
1.486
1.484
3.284
3.282
3.280
3.278
3.276
3.274
V = 4.3 V
I
C
T
= 4.7 µF
= 25° C
O
A
I
= 1 mA
V = 2.7 V
O
I
C
= 4.7 µF
O
I
= 100 mA
O
3.272
3.270
1.482
1.480
–60 –40 –20
0
20 40 60 80 100 120 140
0
20
40
60
80
100
T
A
– Free-Air Temperature – °C
I
O
– Output Current – mA
Figure 3
Figure 4
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
TPS76925
OUTPUT VOLTAGE
vs
TPS76933
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
2.496
2.494
2.492
3.285
3.280
I
O
= 1 mA
I
O
= 1 mA
V = 4.3 V
2.490
2.488
2.486
2.484
I
3.275
3.270
3.265
C
= 4.7 µF
O
I
O
= 100 mA
I
O
= 100 mA
2.482
2.480
2.478
2.476
V = 3.5 V
3.260
3.255
I
C
= 4.7 µF
O
–60 –40 –20
0
20 40 60 80 100 120 140
–60 –40 –20
0
20 40 60 80 100 120 140
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 5
Figure 6
TPS76933
TPS76933
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
22
21
20
19
18
17
16
15
2
V = 4.3 V
I
1.8
1.6
C
= 4.7 µF
O
C
= 10 µF
= 1 mA
O
I
O
C
= 4.7 µF
= 100 mA
O
1.4
1.2
1
I
O
I
O
= 100 mA
0.8
I
= 0 mA
C
= 4.7 µF
= 1 mA
O
O
I
O
0.6
0.4
0.2
0
C
= 10 µF
O
V = 4.3 V
I
I
O
= 100 mA
–60 –40 –20
0
20 40 60 80 100 120 140
100
1k
10k
100k
T
A
– Free-Air Temperature – °C
f – Frequency – Hz
Figure 7
Figure 8
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
TPS76933
OUTPUT IMPEDANCE
vs
DROPOUT VOLTAGE
vs
FREQUENCY
FREE-AIR TEMPERATURE
2
1.8
1.6
1000
100
10
V = 3.2 V
V = 4.3 V
I
I
C
= 4.7 µF
C
= 4.7 µF
O
O
ESR = 0.3 Ω
= 25° C
T
A
1.4
1.2
1
I
O
= 100 mA
0.8
I
O
= 1 mA
0.6
I
O
= 10 mA
0.4
0.2
0
I
O
= 100 mA
1 k
1
10
100
10 k
100 k
1 M
–60 –40 –20
0
20 40 60 80 100 120 140
f – Frequency – Hz
T
A
– Free-Air Temperature – °C
Figure 9
Figure 10
TPS76933
RIPPLE REJECTION
vs
LDO STARTUP TIME
FREQUENCY
100
90
80
70
60
50
EN
I
O
= 1 mA
40
30
20
10
I
O
= 100 mA
V = 4.3 V
I
V
O
C
= 4.7 µF
O
0
ESR = 0.3 Ω
–10
10
100
1 k
10 k
100 k
1 M
10 M
0
20 40 60 80 100 120 140 160 180 200
f – Frequency – Hz
t – Time – µs
Figure 11
Figure 12
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
TPS76915
TPS76915
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
100
0
10
0
–10
3.7
0
–200
–400
2.7
I
C
= 10 mA
L
V = 2.7 V
I
= 4.7 µF
O
C
= 10 µF
O
ESR = 0.3 Ω
ESR = 0.3 Ω
0
20 40 60 80 100 120 140 160 180 200
0
20 40 60 80 100 120 140 160 180 200
t – Time – µs
t – Time – µs
Figure 13
Figure 14
TPS76933
TPS76933
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
10
0
100
0
–10
V = 4.3 V
I
O
C
= 4.7 µF
5.3
ESR = 0.3 Ω
100
0
4.3
I
C
= 10 mA
L
–100
= 4.7 µF
O
ESR = 0.3 Ω
0
20 40 60 80 100 120 140 160 180
0
20 40 60 80 100 120 140 160 180
t – Time – µs
t – Time – µs
Figure 15
Figure 16
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
TPS76933
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)
vs
TPS76933
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)
vs
†
OUTPUT CURRENT
ADDED CERAMIC CAPACITANCE
100
100
V
C
= 4.3 V
= 4.7 µF
V
C
= 4.3 V
= 4.7 µF
O
IN
O
IN
3.3 V LDO
I = 100 mA
L
Region of Instability
Region of Stability
10
Region of Instability
Region of Stability
10
1
1
0.1
0
25
50
75
100
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
I
O
– Output Current – mA
Added Ceramic Capacitance – µF
Figure 17
Figure 18
TPS76933
TPS76933
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)
vs
TYPICAL REGIONS OF STABILITY
†
EQUIVALENT SERIES RESISTANCE (ESR)
vs
OUTPUT CURRENT
ADDED CERAMIC CAPACITANCE
100
10
100
V
C
= 4.3 V
= 10 µF
V
C
= 4.3 V
= 10 µF
O
IN
O
IN
3.3 V LDO
I = 100 mA
L
Region of Instability
Region of Instability
Region of Stability
10
1
Region of Stability
0.1
1
0
25
50
75
100
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
I
O
– Output Current – mA
Added Ceramic Capacitance – µF
Figure 19
Figure 20
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
APPLICATION INFORMATION
The TPS769xx family of low-dropout (LDO) regulators have been optimized for use in battery-operated equipment
and automotive applications. 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
1
3
V
IN
I
4
5
NC/FB
OUT
V
O
C1
1 µF
EN
+
4.7 µF
GND
ESR = 0.2 Ω
2
†
TPS76912, TPS76915, TPS76918, TPS76925, TPS76927, TPS76928,
TPS76930, TPS76933, TPS76950 (fixed-voltage options).
Figure 21. Typical Application Circuit
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
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
thecommerciallyavailable4.7µFsurface-mountsolidtantalumcapacitors, includingdevicesfromSprague, 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.
MFR.
KEMET
SPRAGUE
SPRAGUE
AVX
VALUE
4.7 µF
10 µF
MAX ESR
1.5 Ω
SIZE (H × L × W)
1.9 × 3.5 × 2.8
1.3 × 7.0 × 2.7
2.5 × 7.6 × 2.5
2.6 × 6.0 × 3.2
T494B475K016AS
195D106x0016x2T
695D106x003562T
TPSC475K035R0600
1.5 Ω
10 µF
1.3 Ω
4.7 µF
0.6 Ω
†
Size is in mm. ESR is maximum resistance in Ohms at 100 kHz and T = 25°C. Contact manufacturer for minimum ESR values.
A
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
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:
R1
R2
(1)
V
V
1
O
ref
Where:
V
= 1.224 V typ (the internal reference voltage)
ref
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:
V
O
R1
1
R2
(2)
V
ref
OUTPUT VOLTAGE
PROGRAMMING GUIDE
TPS76901
DIVIDER RESISTANCE
OUTPUT
VOLTAGE
(V)
1
‡
V
(kΩ)
I
IN
1 µF
R1
R2
5
2.5
3.3
3.6
4.0
5.0
174
287
324
383
523
169
169
169
169
169
V
OUT
FB
O
≥1.7 V
3
R1
R2
EN
4
≤0.9 V
4.7 µF
GND
2
ESR = 0.2 Ω
‡
1% values shown.
Figure 22. TPS76901 Adjustable LDO Regulator Programming
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
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, P
, and the actual dissipation, P , which must be less than or
D(max)
D
equal to P
.
D(max)
The maximum-power-dissipation limit is determined using the following equation:
T max
J
T
A
P
D(max)
R
JA
Where:
T max is the maximum allowable junction temperature
J
R
is the thermal resistance junction-to-ambient for the package, see the dissipation rating table.
θJA
T is the ambient temperature.
A
The regulator dissipation is calculated using:
P
V
V
I
D
I
O
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
TPS76901-Q1, TPS76912-Q1, TPS76915-Q1, TPS76918-Q1, TPS76925-Q1
TPS76927-Q1, TPS76928-Q1, TPS76930-Q1, TPS76933-Q1, TPS76950-Q1
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SGLS118A – DECEMBER 2001 – REVISED JANUARY 2002
MECHANICAL DATA
DBV (R-PDSO-G5)
PLASTIC SMALL-OUTLINE
0,50
M
0,20
0,95
5
0,30
4
0,15 NOM
1,70
1,50
3,00
2,60
1
3
Gage Plane
3,00
2,80
0,25
0°–8°
0,55
0,35
Seating Plane
0,10
1,45
0,95
0,05 MIN
4073253-4/F 10/00
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
D. Falls within JEDEC MO-178
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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