TPS62A04XB中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? 2.5V to 5.5V input voltage range

? 0.6V to VIN adjustable output voltage range

? 15mΩ / 10mΩ low RDSON switches

? 25μA quiescent current

? 1% feedback accuracy (0°C to 125°C)

? 100% mode operation

? 2.2MHz switching frequency

? Power save mode or FPWM option available

? Power-good output pin

? Short-circuit protection (HICCUP)

? Internal soft start-up

? Output discharge

? Thermal shutdown protection

? Available in a 1.6mm × 1.6mm, SOT563 package

? Pin-to-pin compatible with the TLV62585

2 Applications

? Multi-function printer

? Set top box

? TV applications

? IP network camera

? Wireless router, solid state drive

? Battery-powered applications

? General purpose point-of-load supply

3 Description

The TPS62A04B and TPS62A04AB are synchronous,

step-down, buck, DC/DC converters designed for

high efficiency and compact design size. The device

uses integrated switches for constantly delivering an

output current of 4A. The device operates in pulse

width modulation (PWM) mode with 2.2MHz switching

frequency at medium to high load. At light load, the

TPS62A04B device variant automatically enters a

power save mode (PSM) to maintain high efficiency

over the entire load current range. The A variant of

this device family (TPS62A04AB) stays PWM mode at

all times irrespective of the load condition. The device

maintains stable frequency and lowest ripple.

The TPS62A04B and TPS62A04AB use an external

resistor divider to set the output voltage. The internal

soft-start circuit limits the inrush current during startup,

and a power-good signal indicates correct output

voltage. Overcurrent protection combined with thermal

shutdown protect device and application. The devices

are available in an SOT563 package.