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ST1S03 Key Features

  • Step-down current mode PWM (1.5 MHz) DC-DC converter
  • 2% DC output voltage tolerance
  • Internal soft-start for STARTUP current
  • 100 µs
  • Typical efficiency: > 70% over all operating
  • 1.5 A output current capability
  • Not switching quiescent current: max 2.5 mA
  • Switch VDS: max. 350 mV at ISW = 750 mA
  • Uses tiny capacitors and inductors
  • production data

Related STMicroelectronics Datasheets

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ST1S03 Description

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) allows the use of tiny surface-mount ponents:.