查询TPS77501供应商
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
D
Open Drain Power-On Reset With 200-ms
Delay (TPS775xx)
D
Open Drain Power Good (TPS776xx)
D
500-mA Low-Dropout Voltage Regulator
D
Available in 1.5-V, 1.8-V, 2.5-V , 2.8-V
(TPS77628 Only), 3.3-V Fixed Output and
Adjustable Versions
D
Dropout Voltage to 169 mV (Typ) at 500 mA
(TPS77x33)
D
Ultra Low 85 µA Typical Quiescent Current
D
Fast Transient Response
D
2% Tolerance Over Specified Conditions for
Fixed-Output Versions
D
8-Pin SOIC and 20-Pin TSSOP PowerPAD
(PWP) Package
D
Thermal Shutdown Protection
description
The TPS775xx and TPS776xx devices are
designed to have a fast transient response and be
stable with a 10-µF low ESR capacitors. This
combination provides high performance at a
reasonable cost.
TPS77x33
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
3
10
2
10
10
1
IO = 500 mA
50
0
– Change in∆
O
V
–50
Output Voltage – mV
PWP PACKAGE
(TOP VIEW)
1
GND/HSINK
GND/HSINK
GND
NC
EN
IN
IN
NC
GND/HSINK
GND/HSINK
NC – No internal connection
D PACKAGE
GND
EN
IN
IN
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
(TOP VIEW)
1
2
3
4
8
7
6
5
TPS77x33
LOAD TRANSIENT RESPONSE
CO = 2x47 µF
ESR = 1/2x100 mΩ
VO = 3.3 V
VI = 4.3 V
GND/HSINK
GND/HSINK
NC
NC
RESET
/PG
FB/NC
OUT
OUT
GND/HSINK
GND/HSINK
RESET
/PG
FB/NC
OUT
OUT
0
10
– Dropout Voltage – mV
DO
V
–1
10
CO = 10 µF
–2
10
PowerPAD is a trademark of 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.
–40 0 20 120
–60 40 60 80 100
–20 140
TA – Free-Air Temperature – °C
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.
IO = 10 mA
IO = 0
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
500
0
O
I – Output Current – mA
0
604020 80 100 140120 160 180 200
Copyright 1999, Texas Instruments Incorporated
t – Time – µs
1
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
J
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
description (continued)
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV
at an output current of 500 mA for the TPS77x33) 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 85 µA over the full range of output current, 0 mA to 500 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
quiescent current to 1 µA at T
= 25°C.
J
The RESET output of the TPS775xx initiates a reset in microcomputer and microprocessor systems in the event
of an undervoltage condition. An internal comparator in the TPS775xx monitors the output voltage of the
regulator to detect an undervoltage condition on the regulated output voltage.
Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset
or a low-battery indicator.
The TPS775xx and TPS776xx are offered in 1.5-V , 1.8-V , 2.5-V , 2.8 V (TPS77628 only), and 3.3-V fixed-voltage
versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77501 option and
1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a maximum of 2% over line, load,
and temperature ranges. The TPS775xx and TPS776xx families are available in 8 pin SOIC and 20 pin TSSOP
packages.
AVAILABLE OPTIONS
OUTPUT
VOLTAGE
T
–40°C to 125°C
The TPS77x01 is programmable using an external resistor divider (see application information). The D and PWP
packages are available taped and reeled. Add an R suffix to the device type (e.g., TPS77501DR).
†
The TPS775xx has an open-drain power-on reset with a 200-ms delay function. The TPS776xx has an open-drain
power good function.
(V)
TYP
3.3 TPS77533PWP TPS77633PWP TPS77533D TPS77633D
2.5 TPS77525PWP TPS77625PWP TPS77525D TPS77625D
2.8 — TPS77628PWP — TPS77628D
1.8 TPS77518PWP TPS77618PWP TPS77518D TPS77618D
1.5 TPS77515PWP TPS77615PWP TPS77515D TPS77615D
Adjustable
1.2 V to 5.5 V
Adjustable
1.5 V to 5.5 V
TPS77501PWP — TPS77501D —
TSSOP
(PWP)
— TPS77601PWP — TPS77601D
(enable) shuts down the regulator, reducing the
†
PACKAGED DEVICES
SOIC
(D)
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
6
V
I
0.1 µF
†
See application information section for capacitor selection details.
IN
7
IN
5
EN
Figure 1. Typical Application Configuration for Fixed Output Options
functional block diagram—adjustable version
IN
EN
_
+
GND
3
RESET/
PG
OUT
OUT
16
14
13
+
RESET
C
10 µF
/PG
V
O
†
O
PG or RESET
OUT
V
= 1.1834 V
ref
GND
+
_
200 ms Delay
(for RESET
Option)
R1
FB/NC
R2
External to the device
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
functional block diagram—fixed-voltage version
IN
EN
PG or RESET
_
V
= 1.1834 V
ref
+
+
_
GND
200 ms Delay
(for RESET
Option)
R1
R2
OUT
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
I/O
DESCRIPTION
I/O
DESCRIPTION
I/O
DESCRIPTION
I/O
DESCRIPTION
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
Terminal Functions
SOIC Package (TPS775xx)
TERMINAL
NAME NO.
EN 2 I Enable input
FB/NC 7 I Feedback input voltage for adjustable device (no connect for fixed options)
GND 1 Regulator ground
IN 3, 4 I Input voltage
OUT 5, 6 O Regulated output voltage
RESET 8 O RESET output
TSSOP Package (TPS775xx)
TERMINAL
NAME NO.
EN 5 I Enable input
FB/NC 15 I Feedback input voltage for adjustable device (no connect for fixed options)
GND 3 Regulator ground
GND/HSINK 1, 2, 9, 10, 11,
12, 19, 20
IN 6, 7 I Input voltage
NC 4, 8, 17, 18 No connect
OUT 13, 14 O Regulated output voltage
RESET 16 O RESET output
Ground/heatsink
SOIC Package (TPS776xx)
TERMINAL
NAME NO.
EN 2 I Enable input
FB/NC 7 I Feedback input voltage for adjustable device (no connect for fixed options)
GND 1 Regulator ground
IN 3, 4 I Input voltage
OUT 5, 6 O Regulated output voltage
PG 8 O PG output
TSSOP Package (TPS776xx)
TERMINAL
NAME NO.
EN 5 I Enable input
FB/NC 15 I Feedback input voltage for adjustable device (no connect for fixed options)
GND 3 Regulator ground
GND/HSINK 1, 2, 9, 10, 11,
12, 19, 20
IN 6, 7 I Input voltage
NC 4, 8, 17, 18 No connect
OUT 13, 14 O Regulated output voltage
PG 16 O PG output
Ground/heatsink
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TPS775xx RESET timing diagram
V
I
†
V
res
V
res
t
V
O
Threshold
Voltage
RESET
Output
Output
Undefined
†
V
is the minimum input voltage for a valid RESET . The symbol V
res
for semiconductor symbology.
‡
VIT –Trip voltage is typically 5% lower than the output voltage (95%VO) V
to V
is the hysteresis voltage.
IT+
‡
V
IT+
‡
V
IT–
200 ms
Delay
V
IT+
Less than 5% of the
output voltage
res
‡
‡
V
IT–
t
200 ms
Delay
Output
Undefined
t
is not currently listed within EIA or JEDEC standards
IT–
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
D
PWP
#
PWP
||
Output voltage range, V
V
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage range‡, VI –0.3 V to 13.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range at EN –0.3 V to 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum RESET
Maximum PG voltage (TPS776xx) 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak output current Internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO (OUT, FB) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See dissipation rating tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, T
Storage temperature range, T
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 affect device reliability.
‡
All voltage values are with respect to network terminal ground.
PACKAGE
PACKAGE
#
This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in × 5-in PCB, 1 oz. copper,
2-in × 2-in coverage (4 in2).
||
This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in × 2-in PCB, 1 oz. copper
with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2). For more information, refer
to TI technical brief SLMA002.
voltage (TPS775xx) 16.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURES
AIR FLOW
(CFM)
0 568 mW 5.68 mW/°C 312 mW 227 mW
250 904 mW 9.04 mW/°C 497 mW 361 mW
DISSIPATION RATING TABLE 2 – FREE-AIR TEMPERATURES
AIR FLOW
(CFM)
0 2.9 W 23.5 mW/°C 1.9 W 1.5 W
300 4.3 W 34.6 mW/°C 2.8 W 2.2 W
0 3 W 23.8 mW/°C 1.9 W 1.5 W
300 7.2 W 57.9 mW/°C 4.6 W 3.8 W
TA < 25°C
POWER RATING
TA < 25°C
POWER RATING
J
DERATING FACTOR
ABOVE TA = 25°C
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
TA = 85°C
POWER RATING
Ĕ
recommended operating conditions
Input voltage, V
Output current, IO (Note 1) 0 500 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: V
NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the
k
I
p
device operate under conditions beyond those specified in this table for extended periods of time.
O
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MIN MAX UNIT
2.7 10 V
TPS77501 1.5 5.5
TPS77601 1.2 5.5
I(min)
= V
O(max)
+ V
DO(max load)
.
7
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77501
TPS77601
TPS77x15
(10 µA to 500 mA load)
(see
)
TPS77x18
V
(see Note 2)
TPS77x25
TPS77628
TPS77x33
()
A
Standby current
PG
(TPS776xx)
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
electrical characteristics over recommended operating free-air temperature range,
V
= V
i
Output voltage
Note 2
Quiescent current (GND current)
EN = 0V, (see Note 2)
Output voltage line regulation (∆VO/V
(see Notes 2 and 3)
Load regulation 3 mV
Output noise voltage
Output current Limit VO = 0 V 1.7 2 A
Thermal shutdown junction temperature 150 °C
FB input current TPS77x01 FB = 1.5 V 2 nA
High level enable input voltage 1.7 V
Low level enable input voltage 0.9 V
Power supply ripple rejection (see Note 2)
Reset
(TPS775xx)
NOTE 2: Minimum IN operating voltage is 2.7 V or V
+ 1 V, IO = 1 mA, EN = 0 V, CO = 10 µF (unless otherwise noted)
O(typ)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
1.5 V ≤ VO ≤ 5.5 V, TJ = 25°C V
1.5 V ≤ VO ≤ 5.5 V, TJ = –40°C to 125°C 0.98V
1.2 V ≤ VO ≤ 5.5 V, TJ = 25°C V
1.2 V ≤ VO ≤ 5.5 V, TJ = –40°C to 125°C 0.98V
TJ = 25°C, 2.7 V < VIN < 10 V 1.5
TJ = –40°C to 125°C, 2.7 V < VIN < 10 V 1.470 1.530
TJ = 25°C, 2.8 V < VIN < 10 V 1.8
TJ = –40°C to 125°C, 2.8 V < VIN < 10 V 1.764 1.836
TJ = 25°C, 3.5 V < VIN < 10 V 2.5
TJ = –40°C to 125°C, 3.5 V < VIN < 10 V 2.450 2.550
TJ = 25°C, 3.8 V < VIN < 10 V 2.8
TJ = –40°C to 125°C, 3.8 V < VIN < 10 V 2.744 2.856
TJ = 25°C, 4.3 V < VIN < 10 V 3.3
TJ = –40°C to 125°C, 4.3 V < VIN < 10 V 3.234 3.366
10 µA < IO < 500 mA, TJ = 25°C 85
IO = 500 mA, TJ = –40°C to 125°C 125
O
)
Minimum input voltage for valid RESET I
Trip threshold voltage VO decreasing 92 98 %V
Hysteresis voltage Measured at V
Output low voltage VI = 2.7 V, I
Leakage current V
RESET time-out delay 200 ms
Minimum input voltage for valid PG I
Trip threshold voltage VO decreasing 92 98 %V
Hysteresis voltage Measured at V
Output low voltage VI = 2.7 V, I
Leakage current V
VO + 1 V < VI ≤ 10 V, TJ = 25°C 0.01 %/V
BW = 300 Hz to 50 kHz,
CO = 10 µF, TJ = 25°C
EN = V
I,
EN = V
I,
f = 1 KHz, CO = 10 µF,
TJ = 25°C
O(RESET)
(RESET)
O(PG)
(PG)
+ 1 V, whichever is greater. Maximum IN voltage 10V.
O(typ)
= 300µA 1.1 V
O
= 5 V 1 µA
= 300µA 1.1 V
O
= 5 V 1 µA
TJ = 25°C,
2.7 V < VI < 10 V
TJ = –40°C to 125°C
2.7 V < VI < 10 V
O(RESET)
O(PG)
= 1mA 0.15 0.4 V
= 1mA 0.15 0.4 V
O
O
O
O
190 µVrms
1 µA
60 dB
0.5 %V
0.5 %V
1.02V
1.02V
O
O
µ
10 µA
O
O
O
O
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
Input current (EN)
A
TPS77628
g
TPS77533
mV
TPS77633
VOOutput voltage
VDODropout voltage
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
electrical characteristics over recommended operating free-air temperature range,
V
= V
i
p
Dropout voltage
(See Note 4)
NOTES: 3. If VO≤ 1.8 V then V
O(typ)
+ 1 V, I
PARAMETER TEST CONDITIONS
= 1 mA, EN = 0 V, CO = 10 µF (unless otherwise noted) (continued)
O
EN = 0 V –1 0 1
EN = V
I
IO = 500 mA, TJ = 25°C 285
IO = 500 mA, TJ = –40°C to 125°C 410
IO = 500 mA, TJ = 25°C 169
IO = 500 mA, TJ = –40°C to 125°C 287
IO = 500 mA, TJ = 25°C 169
IO = 500 mA, TJ = –40°C to 125°C 287
= 2.7 V, V
imin
Line Reg. (mV)
= 10 V:
imax
+ǒ%ńVǓ
ǒ
V
V
imax
O
100
*
2.7 V
MIN TYP MAX UNIT
–1 1
µ
Ǔ
1000
If VO ≥ 2.5 V then V
4. IN voltage equals VO(Typ) – 100 mV; TPS77x15, TPS77x18, and TPS77x25 dropout voltage limited by input voltage range
limitations (i.e., TPS77x33 input voltage needs to drop to 3.2 V for purpose of this test).
= VO + 1 V, V
imin
Line Reg. (mV)
= 10 V:
imax
+ǒ%ńVǓ
ǒ
V
imax
*ǒVO)
100
V
O
1V
Ǔ
Ǔ
1000
Table of Graphs
FIGURE
p
Ground current vs Free-air temperature 8
Power supply ripple rejection vs Frequency 9
Output spectral noise density vs Frequency 10
Z
o
Output impedance vs Frequency 11
p
Line transient response 14, 16
Load transient response 15, 17
Output voltage vs Time 18
Equivalent series resistance (ESR) vs Output current 20 – 23
vs Output current 2, 3, 4
vs Free-air temperature 5, 6, 7
vs Input voltage 12
vs Free-air temperature 13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
9
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
3.2835
3.2830
3.2825
3.2820
3.2815
– Output Voltage – V
3.2810
O
V
3.2805
3.2800
TPS77x33
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
VI = 4.3 V
TA = 25°C
0
0.1 0.3
0.2
IO – Output Current – A
0.4 0.5
1.4985
1.4980
1.4975
1.4970
1.4965
– Output Voltage – V
1.4960
O
V
1.4955
1.4950
0.1 0.30.20 0.4 0.5
Figure 2
TPS77x15
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
VI = 2.7 V
TA = 25°C
IO – Output Current – A
Figure 3
2.4960
2.4955
2.4950
2.4945
2.4940
2.4935
– Output Voltage – V
O
V
2.4930
2.4925
2.4920
TPS77x25
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
VI = 3.5 V
TA = 25°C
0 0.5
0.1 0.3
0.2 0.4
IO – Output Current – A
Figure 4
TPS77x33
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
3.32
VI = 4.3 V
3.31
3.30
3.29
IO = 500 mA
3.28
– Output Voltage – V
O
3.27
V
3.26
3.25
–40 0
–60 120
–20 100 140
TA – Free-Air Temperature – °C
IO = 1 mA
20 40 60 80
Figure 5
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
1.515
1.510
1.505
1.500
1.495
– Output Voltage – V
O
V
1.490
1.485
TPS77x15
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
VI = 2.7 V
IO = 500 mA
IO = 1 mA
–40 0
–20 100–60 120
TA – Free-Air Temperature – °C
20 40 60 80
Figure 6
140
2.515
2.510
2.505
2.500
2.495
– Output Voltage – V
O
2.490
V
2.485
2.480
TPS77x25
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
VI = 3.5 V
IO = 500 mA
IO = 1 mA
–40 0–20 100–60 12020 40 60 80
TA – Free-Air Temperature – °C
Figure 7
TPS77xxx
GROUND CURRENT
POWER SUPPLY RIPPLE REJECTION
vs
FREE-AIR TEMPERATURE
100
VI = 2.7 V
95
90
85
Ground Current – Aµ
80
75
IO = 1 mA
IO = 500 mA
–40 0–20 100–60 12020 40 60 80 140
TA – Free-Air Temperature – °C
90
80
70
60
50
40
30
20
10
0
PSRR – Power Supply Ripple Rejection – dB
–10
Figure 8
TPS77x33
vs
FREQUENCY
1k10010
f – Frequency – Hz
Figure 9
VI = 4.3 V
CO = 10 µF
TA = 25°C
100k10k
1M
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11
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
TPS77x33
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
–5
10
V HzOutput Spectral Noise Density – µ
10
10
10
–6
–7
–8
10
IO = 500 mA
2
3
10
f – Frequency – Hz
IO = 7 mA
10
4
VI = 4.3 V
CO = 10 µF
TA = 25°C
10
5
0
VI = 4.3 V
CO = 10 µF
TA = 25°C
Ω
10
– Output Impedance –Z
o
10
–1
–2
10
IO = 1 mA
1
10
2
Figure 10
TPS77x33
OUTPUT IMPEDANCE
vs
FREQUENCY
IO = 500 mA
10
4
3
10
f – Frequency – kHz
Figure 11
10
5
10
6
350
300
250
200
150
– Dropout Voltage – mV
100
DO
V
50
0
TPS77x01
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
IO = 500 mA
TA = 25°C
TA = –40°C
34
3.52.5
VI – Input Voltage – V
TA = 125°C
4.5 5
Figure 12
TPS77x33
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
3
10
2
10
1
10
0
10
– Dropout Voltage – mV
DO
V
–1
10
CO = 10 µF
–2
10
–40 0 20 120
–60 40 60 80 100
–20 140
TA – Free-Air Temperature – °C
IO = 500 mA
IO = 10 mA
IO = 0
Figure 13
12
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TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
TPS77x15
LINE TRANSIENT RESPONSE
3.7
2.7
– Input Voltage – V
I
V
10
0
– Change in
–10
O
V
∆
Output Voltage – mV
CL = 10 µF
TA = 25°C
0604020 80 100 140120 160 180 200
t – Time – µs
Figure 14
TPS77x33
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
CO = 2x47 µF
ESR = 1/2x100 mΩ
50
VO = 1.5 V
VIN = 2.7 V
0
– Change in∆
O
–50
V
Output Voltage – mV
500
0
O
I – Output Current – mA
0604020 80 100 140120 160 180 200
LOAD TRANSIENT RESPONSE
TPS77x15
t – Time – µs
Figure 15
TPS77x33
5.3
– Input Voltage – V
I
V
4.3
10
0
– Change in
–10
O
V
∆
Output Voltage – mV
0
CL = 10 µF
TA = 25°C
604020 80 100 140120 160 180 200
t – Time – µs
Figure 16
CO = 2x47 µF
50
– Change in∆
O
V
–50
Output Voltage – mV
500
O
I – Output Current – mA
ESR = 1/2x100 mΩ
VO = 3.3 V
VI = 4.3 V
0
0
0
604020 80 100 140120 160 180 200
t – Time – µs
Figure 17
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13
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
TPS77x33
OUTPUT VOLTAGE
vs
TIME (AT STARTUP)
4
3
2
1
– Output Voltage – V
O
V
0
Enable Pulse – V
604020 80 100 140120 160 180 2000
t – Time – µs
Figure 18
+
C
ESR
To Load
O
R
R
L
V
I
IN
EN
OUT
GND
Figure 19. Test Circuit for Typical Regions of Stability (Figures 20 through 23) (Fixed Output Options)
14
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TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
10
Region of Instability
1
Region of Stability
ESR – Equivalent series restance – Ω
Vo = 3.3 V
CL = 4.7 µF
VI = 4.3 V
TA = 25°C
0.1
0 100 200 300 400 500
IO – Output Current – mA
Figure 20
†
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
Ω
Region of Instability
1
Region of Stability
ESR – Equivalent Series Resistance –
Vo = 3.3 V
Cl = 4.7 µF
VI = 4.3 V
TJ = 125°C
0.1
0 100 200 300 400 500
IO – Output Current – mA
Figure 21
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
Region of Instability
1
Region of Stability
ESR – Equivalent series restance – Ω
Vo = 3.3 V
CL = 22 µF
VI = 4.3 V
TA = 25°C
0.1
0 100 200 300 400 500
IO – Output Current – mA
10
1
ESR – Equivalent series restance – Ω
0.1
0 100 200 300 400 500
Figure 22
†
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.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
Region of Instability
Region of Stability
Vo = 3.3 V
Cl = 22 µF
VI = 4.3 V
TJ = 125°C
IO – Output Current – mA
Figure 23
†
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
15
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
APPLICATION INFORMATION
The TPS775xx family includes four fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, and 3.3 V), and an
adjustable regulator, the TPS77501 (adjustable from 1.5 V to 5.5 V).
The TPS776xx family includes five fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, 2.8 V, and 3.3 V), and
an adjustable regulator, the TPS77601 (adjustable from 1.2 V to 5.5 V).
device operation
The TPS775xx and TPS776xx feature 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 (I
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
TPS775xx and TPS776xx quiescent currents remain low even when the regulator drops out, eliminating both
problems.
= IC/β). The TPS775xx and TPS776xx use a PMOS
B
The TPS775xx and TPS776xx families also feature a shutdown mode that places the output in the
high-impedance state (essentially equal to the feedback-divider resistance) and reduces quiescent current to
2 µA. If the shutdown feature is not used, EN
regulated output voltage is typically reestablished in 120 µs.
should be tied to ground. Response to an enable transition is quick;
minimum load requirements
The TPS775xx and TPS776xx families are 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 25. 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 TPS775xx or TPS776xx are 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 TPS775xx and TPS776xx require an output capacitor connected between
OUT and GND to stabilize the internal control loop. The minimum recommended capacitance value is 10 µF
and the ESR (equivalent series resistance) must be between 50 mΩ and 1.5 Ω. Capacitor values 10 µF or larger
are acceptable, provided the ESR is less than 1.5 Ω. Solid tantalum electrolytic, aluminum electrolytic, and
multilayer ceramic capacitors are all suitable, provided they meet the requirements described previously.
16
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TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
APPLICATION INFORMATION
external capacitor requirements (continued)
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
V
C1
0.1 µF
6
RESET/
I
IN
7
IN
5
EN
GND
OUT
OUT
3
PG
16
14
13
+
10 µF
RESET
250 kΩ
V
O
C
O
/PG
Figure 24. Typical Application Circuit (Fixed Versions)
programming the TPS77x01 adjustable LDO regulator
The output voltage of the TPS77x01 adjustable regulator is programmed using an external resistor divider as
shown in Figure 25. The output voltage is calculated using:
R1
VO+
V
ǒ1
ref
Where
V
= 1.1834 V typ (the internal reference voltage)
ref
Resistors R1 and R2 should be chosen for approximately 10-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 = 110 kΩ to set the divider current at approximately 10 µA and then calculate R1 using:
)
R2
Ǔ
(1)
≥ 1.7 V
R1
V
I
+
0.1 µF
≤ 0.9 V
V
O
ǒ
*
1
Ǔ
TPS77x01
RESET
IN
EN
FB / NC
GND
R2
PG
OUT
/
Reset or PG Output
250 kΩ
R1
R2
V
O
C
O
OUTPUT
VOLTAGE
2.5 V
3.3 V
3.6 V
4.75 V
V
ref
Figure 25. TPS77x01 Adjustable LDO Regulator Programming
OUTPUT VOLTAGE
PROGRAMMING GUIDE
R1 R2
121
110
196
110
226
110
332
110
(2)
UNIT
kΩ
kΩ
kΩ
kΩ
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
APPLICATION INFORMATION
reset indicator
The TPS775xx features a RESET 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 RESET output transistor turns on, taking the signal low. The open-drain output requires
a pullup resistor. If not used, it can be left floating. RESET
a low-battery indicator. RESET does not assert itself when the regulated output voltage falls outside the
specified 2% tolerance, but instead reports an output voltage low relative to its nominal regulated value (refer
to timing diagram for start-up sequence).
power-good indicator
The TPS776xx 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.
can be used to drive power-on reset circuitry or as
regulator protection
The TPS775xx and TPS776xx PMOS-pass transistors have 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 TPS775xx and TPS776xx also feature internal current limiting and thermal protection. During normal
operation, the TPS775xx and TPS776xx limit output current to approximately 1.7 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.
18
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TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
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. T o ensure the junction temperature is within acceptable limits,
calculate the maximum allowable dissipation, P
or equal to P
The maximum-power-dissipation limit is determined using the following equation:
D(max)
.
, and the actual dissipation, PD, which must be less than
D(max)
P
D(max)
Where
T
max is the maximum allowable junction temperature
J
R
is the thermal resistance junction-to-ambient for the package, i.e., 176°C/W for the 8-terminal
θJA
SOIC and 32.6°C/W for the 20-terminal PWP with no airflow.
T
is the ambient temperature.
A
The regulator dissipation is calculated using:
PD+
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the
thermal protection circuit.
+
ǒ
VI*
TJmax*T
R
Ǔ
V
O
A
q
JA
I
O
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
19
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
MECHANICAL DATA
D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PIN SHOWN
14
1
0.069 (1,75) MAX
0.050 (1,27)
A
0.020 (0,51)
0.014 (0,35)
0.010 (0,25)
0.004 (0,10)
8
7
0.010 (0,25)
0.157 (4,00)
0.150 (3,81)
M
0.244 (6,20)
0.228 (5,80)
Seating Plane
0.004 (0,10)
PINS **
DIM
A MAX
A MIN
0.008 (0,20) NOM
Gage Plane
0°–8°
8
0.197
(5,00)
0.189
(4,80)
14
0.344
(8,75)
0.337
(8,55)
0.010 (0,25)
0.044 (1,12)
0.016 (0,40)
4040047/B 03/95
16
0.394
(10,00)
0.386
(9,80)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15).
D. Four center pins are connected to die mount pad.
E. Falls within JEDEC MS-012
20
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
MECHANICAL DATA
PWP (R-PDSO-G**) PowerPAD PLASTIC SMALL-OUTLINE PACKAGE
20-PIN SHOWN
0,65
20
1
1,20 MAX
0,30
0,19
11
4,50
4,30
10
A
0,15
0,05
PINS **
DIM
M
0,10
6,60
6,20
Seating Plane
0,10
1614
Thermal Pad
(See Note D)
20
0,15 NOM
0°–8°
Gage Plane
0,25
0,75
0,50
2824
A MAX
A MIN
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 protrusions.
D. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane. This pad is electrically
and thermally connected to the backside of the die and possibly selected leads.
E. Falls within JEDEC MO-153
PowerPAD is a trademark of Texas Instruments Incorporated.
5,10
4,90
5,10
4,90
6,60
6,40
7,90
7,70
9,80
9,60
4073225/E 03/97
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
21
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