TPS77701, TPS77715, TPS77718, TPS77725, TPS77733 WITH RESET OUTPUT

TPS77801, TPS77815, TPS77818, TPS77825, TPS77833 WITH PG OUTPUT

FAST-TRANSIENT-RESPONSE 750-mA LOW-DROPOUT VOLTAGE REGULATORS

SLVS230A – SEPTEMBER 1999 – REVISED SEPTEMBER 1999

2

POST OFFICE BOX 655303

description (continued)

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV

at an output current of 750 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 750 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

The RESET output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event

of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the

regulator to detect an undervoltage condition on the regulated output voltage.

Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset

or a low-battery indicator.

The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, 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 TPS77701 option and 1.2 V to 5.5 V for

TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature

ranges. The TPS777xx and TPS778xx families are available in 8 pin SOIC and 20 pin PWP packages.

AVAILABLE OPTIONS

TJ

OUTPUT

VOLTAGE

(V)

PACKAGED DEVICES

J

TYP

TSSOP

(PWP)

SOIC

(D)

3.3

TPS77733PWP

TPS77833PWP

TPS77733D

TPS77833D

2.5

TPS77725PWP

TPS77825PWP

TPS77725D

TPS77825D

1.8

TPS77718PWP

TPS77818PWP

TPS77718D

TPS77818D

– 40

°Cto125°C

1.5

TPS77715PWP

TPS77815PWP

TPS77715D

TPS77815D

40 C to 125 C

Adjustable

1.5 V to 5.5 V

TPS77701PWP

—

TPS77701D

—

Adjustable

1.2 V to 5.5 V

—

TPS77801PWP

—

TPS77801D

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., TPS77701DR).

† See application information section for capacitor selection details.

RESET/

PG

OUT

OUT

7

6

5

IN

IN

EN

GND

3

16

14

13

VI

0.1

µF

RESET/PG

VO

10

µF

+

CO†

Figure 1. Typical Application Configuration for Fixed Output Options