1 Features

? VOUT range: 0.65 V to 3.6 V

? Ultra-low VIN range: 0.65 V to 6 V

? VBIAS range: 1.7 V to 6 V

? Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V

? Noise: 7.1 μVRMS

? PSRR:

– 70 dB at 1 kHz

– 60 dB at 10 kHz

– 55 dB at 100 kHz

– 50 dB at 1 MHz

? 1.5 accuracy over line, load, and temperature

? Programmable soft-start provides linear voltage

start-up

? VBIAS permits low VIN operation with good transient

response

? UVLO on both IN and BIAS

? Stable with any output capacitor ≥ 10 μF

? Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8

2 Applications

? High-performance computing

? Microservers

? Desktop and PC motherboards

? Data concentrators

? Rugged PC laptops

3 Description

The TPS7A74 low-dropout (LDO) linear regulator

provides an easy-to-use robust power management

solution for a wide variety of applications. Userprogrammable

soft-start minimizes stress on the

input power source by reducing capacitive inrush

current on start up. The soft-start is monotonic

and well-suited for powering many different types of

processors and application-specific integrated circuits

(ASICs). The enable input allows for easy sequencing

with external regulators. This complete flexibility

allows a solution to be configured that meets the

sequencing requirements of field-programmable gate

arrays (FPGAs), digital signal processors (DSPs), and

other applications with special start-up requirements.

A precision reference and error amplifier deliver 1.5

accuracy over load, line, temperature, and process.

The device is stable with any type of capacitor greater

than or equal to 10 μF, and is fully specified for TJ =

–40°C to +125°C. The TPS7A74 is offered in a small,

3-mm × 3-mm, WSON-8 package, yielding a highly

compact, total solution size.