1 Features

? VOUT range: 0.8 V to 3.6 V

? Ultra-low VIN range: 0.8 V to 5.5 V

? VBIAS range 2.7 V to 5.5 V

? Low dropout: 60 mV typical at 1.5 A, VBIAS = 5 V

? Power good (PG) output allows supply monitoring

or provides a sequencing signal for other supplies

? 2 accuracy over line, load, and temperature

? Programmable soft-start provides linear voltage

start-up

? VBIAS permits low VIN operation with good transient

response

? Stable with any output capacitor ≥ 2.2 μF

? Available in small, 3-mm × 3-mm × 1-mm

VSON-10 and 5-mm × 5-mm VQFN-20 packages

2 Applications

? Network attached storage - enterprise

? Rack servers

? Network interface cards (NIC)

? Merchant network and server PSU

3 Description

The TPS748 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 designed

for powering many different types of processors and

ASICs. The enable input and power-good output

allow easy sequencing with external regulators. This

complete flexibility allows a solution to be configured

that meets the sequencing requirements of FPGAs,

DSPs, and other applications with special start-up

requirements.

A precision reference and error amplifier deliver 2

accuracy over load, line, temperature, and process.

The device is stable with any type of capacitor greater

than or equal to 2.2 μF, and is fully specified for

TJ = –40°C to +125°C. The TPS748 is offered in a

small, 3-mm × 3-mm, VSON-10 package, yielding a

highly compact, total solution size. The device is also

available in a 5-mm × 5-mm VQFN-20 package for

compatibility with the TPS744.