Description

The ST1S03 is a step down DC-DC converter optimized for powering low-voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause an high heating of the application environment.

Features

■ Step-down current mode PWM (1.5MHz) DC-DC converter

■ 2 DC output voltage tolerance

■ Internal soft start for START-UP current limitation and power on delay of 50-100µs

■ Typical efficiency: > 70 over all operating conditions

■ 1.5A Output current capability

■ Not switching quiescent current: max 2.5mA over temperature range

■ Switch VDS: max 350mV @ ISW=750mA

■ Uses tiny capacitors and inductors

■ Available in DFN 3x3 exposed pad