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ML4902 - High Current Synchronous Buck Controller

Description

The ML4902 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®.

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 20A load range Programmable output voltage (1.8V to 3.5V) is set by an onboard 2 chord 4-bit DAC Synchronous N-channel 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.

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Datasheet Details

Part number ML4902
Manufacturer Micro Linear
File Size 191.74 KB
Description High Current Synchronous Buck Controller
Datasheet download datasheet ML4902 Datasheet

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Other Datasheets by Micro Linear

Part Number Description
ML4900 High Current Synchronous Buck Controller
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Full PDF Text Transcription

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May 1998 ML4902 High Current Synchronous Buck Controller GENERAL DESCRIPTION The ML4902 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 ML4902 controller, when combined with 2 N-channel MOSFETs, generates output voltages between 1.8V and 3.5V from a 5V supply. The output voltage is selected via an internal 2 chord 4-bit DAC. In the upper range, the output can be set between 2.1V and 3.5V in 100mV steps. In the lower range, the output can be set between 1.8V and 2.05V in 50mV steps. Output currents in excess of 20A can be attained at efficiencies greater than 90%. The ML4902 can be enabled/disabled via the SHDN pin.
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