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

2

POST OFFICE BOX 655303

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 (enable) shuts down the regulator, reducing the

quiescent current to 1

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†

TJ

OUTPUT

VOLTAGE

(V)

PACKAGED DEVICES

J

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°C

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.