1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

GND/HEATSINK

GND/HEATSINK

V

IN1

V

IN2

V

OUT2

V

OUT1

V

V

IN1

V

IN2

V

OUT2

V

OUT1

NC

MR

EN1

EN2

RESET

GND

NC=Nointernalconnection

GND/HEATSINK

GND/HEATSINK

NC

NC

PG2

PG1

V

PWPPACKAGE

(TOPVIEW)

1.8 V

VIN1

VIN2

EN1

EN2

VOUT1

VSENSE1

PG1

MR

RESET

PG2

VSENSE2

VOUT2

TPS70451PWP

5V

3.3V

I/O

PG2

Core

0.22 mF

RESET

22 mF

47 mF

0.22 mF

MR

PG1

EN1

250kW

>2V

<0.7V

250kW

>2V

<0.7V

>2V

<0.7V

EN2

250kW

TPS70445, TPS70448

TPS70451, TPS70458

TPS70402

www.ti.com

SLVS307F – SEPTEMBER 2000 – REVISED APRIL 2010

DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS

WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS

Check for Samples: TPS70445, TPS70448, TPS70451, TPS70458, TPS70402

1

FEATURES

DESCRIPTION

23

•

Dual Output Voltages for Split-Supply

The

TPS704xx

family

of

devices

consists

of

Applications

dual-output,

low-dropout

voltage

regulators

with

integrated SVS (RESET, POR, or power on reset)

•

Independent Enable Functions (See Part

and power good (PG) functions. These devices are

Number TPS703xx for Sequenced Outputs)

capable of supplying 1 A and 2 A by regulator 1 and

•

Output Current Range of 1 A on Regulator 1

regulator 2 respectively. Quiescent current is typically

and 2 A on Regulator 2

185 mA at full load. Differentiated features, such as

•

Fast Transient Response

accuracy, fast transient response, SVS supervisory

circuit (power on reset), manual reset input, and

•

Voltage Options: 3.3-V/2.5-V, 3.3-V/1.8-V,

independent enable functions provide a complete

3.3-V/1.5-V, 3.3-V/1.2-V, and Dual Adjustable

system solution.

Outputs

•

Open Drain Power-On Reset with 120-ms Delay

•

Open Drain Power Good for Regulator 1 and

Regulator 2

•

Ultralow 185mA (typ) Quiescent Current

•

2mA Input Current During Standby

•

•

Quick Output Capacitor Discharge Feature

•

One Manual Reset Input

•

2% Accuracy Over Load and Temperature

•

Undervoltage Lockout (UVLO) Feature

•

24-Pin PowerPAD™ TSSOP Package

•

Thermal Shutdown Protection

1

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.

2

PowerPAD is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.