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.

■ STEP-DOWN CURRENT MODE PWM (1.5MHz) DC-DC CONVERTER
■ 2% DC OUTPUT VOLTAGE TOLERANCE
■ INTERNAL SOFT START FOR START-UP CURRENT LIMITIATION 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