DESCRIPTION

The device is a step-down controller specifically designed to provide extremely high efficiency conversion, with losses current sensing tecnique.

FEATURE

■ CONSTANT ON TIME TOPOLOGY ALLOWS

OPERATION WITH LOWER DUTY THAN

PWM TOPOLOGY

■ VERY FAST LOAD TRANSIENTS

■ 5V Vcc SUPPLY

■ 1.5V TO 28V INPUT VOLTAGE RANGE

■ 0.9V ±1 VREF

■ MINIMUM OUTPUT VOLTAGE AS LOW AS 0.9V

■ SELECTABLE SINKING MODE

■ LOSSLESS CURRENT LIMIT

■ REMOTE SENSING

■ OVP,UVP LATCHED PROTECTIONS

■ 600µA TYP QUIESCENT CURRENT

■ POWER GOOD AND OVP SIGNALS

■ PULSE SKIPPING AT LIGHT LOADS

APPLICATIONS

■ I/O BUS FOR CPU CORE SUPPLY

■ NOTEBOOK COMPUTERS

■ NETWORKING DC-DC

■ DISTRIBUTED POWER