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SC1154 - PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Datasheet Summary

Description

The SC1154 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern.

The controller is a hysteretic type, with a user selectable hysteresis.

Features

  • include an integrated 5 bit D/A converter, temperature compensated voltage reference, current limit comparator, over-current protection, and an adaptive deadtime circuit to prevent shoot-through of the power MOSFET during switching transitions. Power good signaling, logic compatible shutdown, and over-voltage protection are also provided. The integrated D/A converter provides programmability of output voltage from 2.0V to 3.5V in 100mV increments and 1.3V to 2.05V in 50mV increments with no exte.

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Datasheet Details

Part number SC1154
Manufacturer Semtech Corporation
File Size 164.19 KB
Description PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS
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PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS PRELIMINARY - March 1, 2000 SC1154 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1154 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hysteresis. The SC1154 is ideal for implementing DC/DC converters needed to power advanced ® microprocessors such as Pentium ll, in both single and multiple processor configurations. Inhibit, undervoltage lockout and soft-start functions are included for controlled power-up.
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