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ST1S32 - 4A DC step-down switching regulator

General Description

The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous stepdown regulator.

The ST1S32 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

Key Features

  • 4 A DC output current.
  • 2.8 V to 5.5 V input voltage.
  • Output voltage adjustable from 0.8 V.
  • 1.5 MHz switching frequency.
  • Internal soft-start and enable.
  • Integrated 60 mΩ and 45 mΩ Power MOSFETs.
  • All ceramic capacitor.
  • Power Good (POR).
  • Cycle-by-cycle current limiting.
  • Current foldback short-circuit protection.
  • VFDFPN 8 4x4x1.0 package.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ST1S32 4 A DC step-down switching regulator Datasheet — production data Features ■ 4 A DC output current ■ 2.8 V to 5.5 V input voltage ■ Output voltage adjustable from 0.8 V ■ 1.5 MHz switching frequency ■ Internal soft-start and enable ■ Integrated 60 mΩ and 45 mΩ Power MOSFETs ■ All ceramic capacitor ■ Power Good (POR) ■ Cycle-by-cycle current limiting ■ Current foldback short-circuit protection ■ VFDFPN 8 4x4x1.0 package Applications ■ µP/ASIC/DSP/FPGA core and I/O supplies ■ Point of Load for: STB, TV, DVD ■ Optical storage, hard disk drives, printers, audio/graphic cards VFDFPN 8 4x4x1.0 Description The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous stepdown regulator. The ST1S32 operates from 2.8 V to 5.