Fast-Transient-Response 500-mA LDO Voltage Regulators

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

Open Drain Power-On Reset With 200-ms

Delay (TPS775xx)

Open Drain Power Good (TPS776xx)

500-mA Low-Dropout Voltage Regulator

Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V

(TPS77628 Only), 3.3-V Fixed Output and

Adjustable Versions

Dropout Voltage to 169 mV (Typ) at 500 mA

(TPS77x33)

Ultra Low 85

A Typical Quiescent Current

Fast Transient Response

2% Tolerance Over Specified Conditions for

Fixed-Output Versions

8-Pin SOIC and 20-Pin TSSOP PowerPAD

™

(PWP) Package

Thermal Shutdown Protection

description

The TPS775xx and TPS776xx devices are

designed to have a fast transient response and be

stable with a 10-

F low ESR capacitors. This

combination provides high performance at a

reasonable cost.

TA – Free-Air Temperature –

–40

120

103

–60

80 100

– Dropout V

oltage – mV

TPS77x33

DROPOUT VOLTAGE

FREE-AIR TEMPERATURE

102

101

100

10–1

10–2

–20

140

IO = 500 mA

IO = 10 mA

IO = 0

CO = 10

t – Time –

TPS77x33

LOAD TRANSIENT RESPONSE

I – Output Current – mA O

– Change in

∆

Output

oltage – mV

500

80 100

140

120

160 180 200

–50

CO = 2x47

ESR = 1/2x100 m

Ω

VO = 3.3 V

VI = 4.3 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.

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.

1999, Texas Instruments Incorporated

NC – No internal connection

GND/HSINK

GND

GND/HSINK

RESET/PG

FB/NC

OUT

GND/HSINK

PWP PACKAGE

(TOP VIEW)

GND

RESET/PG

FB/NC

OUT

D PACKAGE

(TOP VIEW)

PowerPAD is a trademark of Texas Instruments Incorporated.

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

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

A 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 (enable) shuts down the regulator, reducing the

quiescent current to 1

A at T

= 25

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

(V)

PACKAGED DEVICES

TYP

TSSOP

(PWP)

SOIC

(D)

3.3

TPS77533PWP

TPS77633PWP

TPS77533D

TPS77633D

2.5

TPS77525PWP

TPS77625PWP

TPS77525D

TPS77625D

2.8

—

TPS77628PWP

—

TPS77628D

1.8

TPS77518PWP

TPS77618PWP

TPS77518D

TPS77618D

– 40

C to 125

1.5

TPS77515PWP

TPS77615PWP

TPS77515D

TPS77615D

Adjustable

1.2 V to 5.5 V

—

TPS77601PWP

—

TPS77601D

Adjustable

1.5 V to 5.5 V

TPS77501PWP

—

TPS77501D

—

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.

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

Terminal Functions

SOIC Package (TPS775xx)

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

Enable input

FB/NC

Feedback input voltage for adjustable device (no connect for fixed options)

GND

Regulator ground

3, 4

Input voltage

OUT

5, 6

Regulated output voltage

RESET

RESET output

TSSOP Package (TPS775xx)

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

Enable input

FB/NC

Feedback input voltage for adjustable device (no connect for fixed options)

GND

Regulator ground

GND/HSINK

1, 2, 9, 10, 11,

12, 19, 20

Ground/heatsink

6, 7

Input voltage

4, 8, 17, 18

No connect

OUT

13, 14

Regulated output voltage

RESET

RESET output

SOIC Package (TPS776xx)

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

Enable input

FB/NC

Feedback input voltage for adjustable device (no connect for fixed options)

GND

Regulator ground

3, 4

Input voltage

OUT

5, 6

Regulated output voltage

PG output

TSSOP Package (TPS776xx)

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

Enable input

FB/NC

Feedback input voltage for adjustable device (no connect for fixed options)

GND

Regulator ground

GND/HSINK

1, 2, 9, 10, 11,

12, 19, 20

Ground/heatsink

6, 7

Input voltage

4, 8, 17, 18

No connect

OUT

13, 14

Regulated output voltage

PG output

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

TPS775xx RESET timing diagram

† Vres is the minimum input voltage for a valid RESET. The symbol Vres is not currently listed within EIA or JEDEC standards

for semiconductor symbology.

ÎÎ

Vres†

Vres

Threshold

Voltage

RESET

Output

200 ms

Delay

200 ms

Delay

Output

Undefined

Output

Undefined

VIT +‡

VIT –‡

VIT +‡

Less than 5% of the

output voltage

‡ VIT –Trip voltage is typically 5% lower than the output voltage (95%VO) VIT–

to VIT+ is the hysteresis voltage.

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Input voltage range

‡

, V

– 0.3 V to 13.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range at EN

–0.3 V to 16.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum RESET voltage (TPS775xx)

16.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum PG voltage (TPS776xx)

16.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak output current

Internally limited

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage, V

(OUT, FB)

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See dissipation rating tables

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature range, T

– 40

C to 125

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

– 65

C to 150

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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.

DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURES

PACKAGE

AIR FLOW

(CFM)

TA < 25

POWER RATING

DERATING FACTOR

ABOVE TA = 25

TA = 70

POWER RATING

TA = 85

POWER RATING

568 mW

5.68 mW/

312 mW

227 mW

250

904 mW

9.04 mW/

497 mW

361 mW

DISSIPATION RATING TABLE 2 – FREE-AIR TEMPERATURES

PACKAGE

AIR FLOW

(CFM)

TA < 25

POWER RATING

DERATING FACTOR

ABOVE TA = 25

TA = 70

POWER RATING

TA = 85

POWER RATING

PWP#

2.9 W

23.5 mW/

1.9 W

1.5 W

PWP#

300

4.3 W

34.6 mW/

2.8 W

2.2 W

PWP||

3 W

23.8 mW/

1.9 W

1.5 W

PWP||

300

7.2 W

57.9 mW/

4.6 W

3.8 W

# 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.

recommended operating conditions

MIN

MAX

UNIT

Input voltage, VI

2.7

Output voltage range VO

TPS77501

1.5

5.5

Output voltage range, VO

TPS77601

1.2

5.5

Output current, IO (Note 1)

500

Operating virtual junction temperature, TJ (Note 1)

– 40

125

To calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load).

NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the

device operate under conditions beyond those specified in this table for extended periods of time.

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range,

= V

O(typ)

+ 1 V, I

= 1 mA, EN = 0 V, C

= 10

F (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TPS77501

1.5 V

≤

5.5 V,

TJ = 25

TPS77501

1.5 V

≤

5.5 V,

TJ = –40

C to 125

0.98VO

1.02VO

TPS77601

1.2 V

≤

5.5 V,

TJ = 25

TPS77601

1.2 V

≤

5.5 V,

TJ = –40

C to 125

0.98VO

1.02VO

TPS77x15

TJ = 25

2.7 V < VIN < 10 V

1.5

TPS77x15

TJ = –40

C to 125

2.7 V < VIN < 10 V

1.470

1.530

Output voltage

(10

A to 500 mA load)

TPS77x18

TJ = 25

2.8 V < VIN < 10 V

1.8

(10

A to 500 mA load)

(see Note 2)

TPS77x18

TJ = –40

C to 125

2.8 V < VIN < 10 V

1.764

1.836

(see Note 2)

TPS77x25

TJ = 25

3.5 V < VIN < 10 V

2.5

TPS77x25

TJ = –40

C to 125

3.5 V < VIN < 10 V

2.450

2.550

TPS77628

TJ = 25

3.8 V < VIN < 10 V

2.8

TPS77628

TJ = –40

C to 125

3.8 V < VIN < 10 V

2.744

2.856

TPS77x33

TJ = 25

4.3 V < VIN < 10 V

3.3

TPS77x33

TJ = –40

C to 125

4.3 V < VIN < 10 V

3.234

3.366

Quiescent current (GND current)

A < IO < 500 mA, TJ = 25

(

)

EN = 0V, (see Note 2)

IO = 500 mA,

TJ = –40

C to 125

125

Output voltage line regulation (

∆

VO/VO

)

(see Notes 2 and 3)

VO + 1 V < VI

≤

10 V,

TJ = 25

0.01

%/V

Load regulation

Output noise voltage

BW = 300 Hz to 50 kHz,

CO = 10

F, TJ = 25

190

Vrms

Output current Limit

VO = 0 V

1.7

Thermal shutdown junction temperature

150

Standby current

EN = VI,

TJ = 25

2.7 V < VI < 10 V

Standby current

EN = VI,

TJ = –40

C to 125

2.7 V < VI < 10 V

FB input current

TPS77x01

FB = 1.5 V

High level enable input voltage

1.7

Low level enable input voltage

0.9

Power supply ripple rejection (see Note 2)

f = 1 KHz,

CO = 10

TJ = 25

Minimum input voltage for valid RESET

IO(RESET) = 300

1.1

Trip threshold voltage

VO decreasing

%VO

Reset

Hysteresis voltage

Measured at VO

0.5

%VO

(TPS775xx)

Output low voltage

VI = 2.7 V,

IO(RESET) = 1mA

0.15

0.4

Leakage current

V(RESET) = 5 V

RESET time-out delay

200

Minimum input voltage for valid PG

IO(PG) = 300

1.1

Trip threshold voltage

VO decreasing

%VO

(TPS776xx)

Hysteresis voltage

Measured at VO

0.5

%VO

(TPS776xx)

Output low voltage

VI = 2.7 V,

IO(PG) = 1mA

0.15

0.4

Leakage current

V(PG) = 5 V

NOTE 2: Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum IN voltage 10V.

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

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range,

= V

O(typ)

+ 1 V, I

= 1 mA, EN = 0 V, C

= 10

F (unless otherwise noted) (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input current (EN)

EN = 0 V

–1

Input current (EN)

EN = VI

–1

TPS77628

IO = 500 mA,

TJ = 25

285

TPS77628

IO = 500 mA,

TJ = –40

C to 125

410

Dropout voltage

TPS77533

IO = 500 mA,

TJ = 25

169

(See Note 4)

TPS77533

IO = 500 mA,

TJ = –40

C to 125

287

TPS77633

IO = 500 mA,

TJ = 25

169

TPS77633

IO = 500 mA,

TJ = –40

C to 125

287

NOTES:

3. If VO

≤

1.8 V then Vimin = 2.7 V, Vimax = 10 V:

Line Reg. (mV)

% V

imax

2.7 V

100

1000

If VO

≥

2.5 V then Vimin = VO + 1 V, Vimax = 10 V:

Line Reg. (mV)

% V

imax