TPS77001, TPS77012, TPS77015, TPS77018, TPS77025

TPS77027, TPS77028, TPS77030, TPS77033, TPS77050

ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS

SLVS210C – JUNE 1999 – REVISED SEPTEMBER 1999

1

POST OFFICE BOX 655303

2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and

Adjustable Versions

Temperature Range

description

The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultra

low-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultra low

quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline

integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and

where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual PNP pass transistor to be

replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the

dropout voltage is very low — typically 35 mV at 50 mA of load current (TPS77050) — and is directly proportional

to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultra low

(28

µA maximum) and is stable over the entire range of output load current (0 mA to 50 mA).

Intended for use in portable systems such as

laptops and cellular phones, the ultra low-dropout

voltage feature and ultra low-power operation

result in a significant increase in system battery

operating life.

The TPS770xx also features a logic-enabled

sleep mode to shut down the regulator, reducing

quiescent current to 1

TPS770xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V,

2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage

versions and in a variable version (programmable

over the range of 1.2 V to 5.5 V).

Copyright

© 1999, 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.

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.

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2

4

5

DBV PACKAGE

(TOP VIEW)

1

IN

GND

EN

OUT

NC/FB

TA – Free-Air Temperature – °C

15

22

TPS77033

GROUND CURRENT

vs

FREE-AIR TEMPERATURE

VI = 4.3 V

CO = 4.7 µF

–40

0

–20

20

140

–60

40

80

100 120

60

21

20

19

18

17

16

IO = 0 mA

IO = 50 mA