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ST1S12G18R - Synchronous rectification

Download the ST1S12G18R datasheet PDF. This datasheet also includes the ST1S12GR variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (ST1S12GR-STMicroelectronics.pdf) that lists specifications for multiple related part numbers.

General Description

The ST1S12 is a step down DC-DC converter optimized for powering low-voltage digital cores in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause high heating of the application environment.

It provides up to 0.7 A over an input voltage range of 2.5 V to 5.5 V.

A high switching frequency (1.7 MHz) allows the use of tiny surface-mount components.

Overview

ST1S12XX ST1S12XX12, ST1S12XX18 Synchronous rectification with enable, 0.7 A, 1.

Key Features

  • Step-down current mode PWM (1.7 MHz) DCDC converter 3% DC output voltage tolerance Synchronous rectification Fixed output voltage 1.2 V, 1.8 V, and ADJ (available on request 1.5 V, 2.5 V and 3.3 V) Enable function Internal soft start Typical efficiency: > 90% 0.7 A output current capability Not switching quiescent current: max 650 µA over temperature range RDSON typ. 250 mΩ and 400 mΩ Uses tiny capacitors and inductor.

More Datasheets from STMicroelectronics

Part Number Description
ST1S12G12R Synchronous rectification
ST1S12GR Synchronous rectification
ST1S10 monolithic synchronous step-down regulator
ST1S14 Up to 3A step-down switching regulator
ST1S03 step-down switching regulator
ST1S03A step-down switching regulator
ST1S06 Synchronous rectification
ST1S06A Synchronous rectification
ST1S09 1.5 MHz PWM step-down switching regulator
ST1S30 PWM step-down switching regulator