• Part: LM2639
  • Description: High Frequency Multi-phase PWM Controller
  • Manufacturer: National Semiconductor
  • Size: 151.91 KB
LM2639 Datasheet (PDF) Download
National Semiconductor
LM2639

Overview

The LM2639 provides an attractive solution for power supplies of high power microprocessors (such as Pentium II™, M II™, K6™-2, K6™-3, etc.) exhibiting ultra fast load transients. Compared to a conventional single-phase supply, an LM2639 based multi-phase supply distributes the thermal and electrical loading among components in multiple phases and greatly reduces the corresponding stress in each component.

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  • Ultra fast load transient response Enables all surface-mount-design Selectable 2, 3, 4 phase operation Clock frequency from 40 kHz to 10 MHz Precision load current sharing 5-bit programm