ML4903 Datasheet High Current Synchronous Buck Controller

Manufacturer: Micro Linear

Overview: July 1999 ML4903 High Current Synchronous Buck Controller GENERAL.

Datasheet Details

Part number	ML4903
Manufacturer	Micro Linear
File Size	162.16 KB
Description	High Current Synchronous Buck Controller
Datasheet	ML4903_MicroLinearCorporation.pdf

General Description

The ML4903 high current synchronous buck controller provides high efficiency DC/DC conversion to generate VCCP for processors such as the Pentium® Pro and Pentium II from Intel®.

The ML4903 controller, when combined with two external MOSFETs, generates output voltages between 1.8V and 3.5V from a 12V supply.

The output voltage is selected via an internal 2 chord 4-bit DAC.

Key Features

s Designed to meet Pentium Pro and Pentium II VRM power supply requirements DC regulation to +1% maximum Proprietary circuitry provides transient response of ±5% maximum over a 0A to 14A load range Programmable output voltage (1.8V to 3.5V) is set by an onboard 2 chord 4-bit DAC Synchronous buck topology for maximum power conversion efficiency Fixed frequency operation for easier system integration Integrated anti-shootthrough logic, short circuit protection, shutdown, and UV lockout s s s s.

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