Part LM2637
Description Motherboard Power-Supply Solution
Manufacturer National Semiconductor
Size 360.74 KB
National Semiconductor
LM2637

Overview

The LM2637 provides a comprehensive embedded power supply solution for motherboards hosting high performance MPUs such as M II™, Pentium™ II, K6-2 and other similar high performance MPUs. The LM2637 incorporates a 5-bit programmable, synchronous buck switching controller and two high-speed linear regulator controllers in a 24-pin SO package.

  • Provides 3 regulated voltages
  • Power Good flag and output enable
  • Under-voltage latch-off Switching Section
  • Synchronous rectification
  • 5-bit DAC programmable from 3.5V to 1.3V
  • Typical 1% DAC tolerance
  • Switching frequency: 50 kHz to 1 MHz
  • Two levels of over-voltage protection
  • Two methods of over-current protection
  • Adaptive non-overlapping FET gate drives