ST1S03 - STMicroelectronics

ST1S03 step-down switching regulator

The ST1S03 is a step-down DC-DC converter optimized for powering a low voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V. A high switching frequency (1.5 MHz).

Features

 Step-down current mode PWM (1.5 MHz) DC-DC converter
 2% DC output voltage tolerance
 Internal soft-start for STARTUP current limitation and power on delay of 50 - 100 µs
 Typical efficiency: > 70% over all operating conditions
 1.5 A output current capability
 Not switching quiescent current: max 2.5 mA over temperature range
 Switch VDS: max. 350 mV at ISW = 750 mA
 Uses tiny capacitors and inductors
 Available in DFN6D 3 x 3 mm package with exposed pad Datasheet - production data Description The ST1S03 is a step-down DC-DC converter optimized for powering a low voltage digital c.