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ST1S32 Datasheet 4a DC Step-down Switching Regulator

Manufacturer: STMicroelectronics

Overview: ST1S32 4 A DC step-down switching regulator Datasheet — production.

General Description

The ST1S32 is an internally pensated 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.

The ST1S32 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier, allowing very high efficiency with very low output voltages.

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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