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1 Features

? 42mΩ and 27.5mΩ low RDSON switches

? 2.5V to 5.5V input voltage range

? 0.6V to VIN adjustable output voltage range

? 28μA (typical) quiescent current (VFB > VREF)

? 150nA (typical) shutdown current (EN = Low)

? 1.2V I/O compatible EN input

? 1% feedback accuracy (0°C to 125°C)

? 100% mode operation

? 2.2MHz switching frequency

? Power save mode or forced PWM option available

? Power-good output pin

? Short-circuit protection (HICCUP)

? Internal soft start-up

? Active output discharge

? Thermal shutdown protection

? Improved drop-in replacement for TLV62585 (DRL)

2 Applications

? Set top box, TV applications

? IP network camera, Multi-function printer

? Wireless router, solid state drive

? Battery-powered applications

? General purpose point-of-load supply

3 Description

The TPS62A03 and TPS62A03A are synchronous,

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

efficiency and compact design size. The devices

integrate switches capable of delivering an output

current up to 3A. At medium to heavy loads, the

devices operate in pulse width modulation (PWM)

mode with 2.2MHz switching frequency. At light load,

the TPS62A03 automatically enters power save mode

(PSM) maintaining high efficiency over the entire load

current range. The TPS62A03A variant of this device

operates in PWM mode across the whole load current

range with a fixed switching frequency. In shutdown,

the current consumption is minimal for both devices.

The TPS62A03 and TPS62A03A provide an

adjustable output voltage through an external resistor

divider. An internal soft-start circuit limits the inrush

current during start-up. Overcurrent protection and

thermal shutdown protect device and application

under fault conditions. A power good signal indicates

that the output voltage is in correct regulation.

The devices are available in a SOT563 package.

The TPS62A03 and TPS62A03A can upgrade

existing TLV62585 based power supply circuits if

better efficiency or higher accuracy over a wider

temperature range is needed.