LM2638 Overview
The LM2638 provides a prehensive embedded power supply solution for motherboards hosting high performance MPUs such as Pentium™ II, M II™, K6™-2 and other similar high performance MPUs. The LM2638 incorporates a 5-bit programmable, synchronous buck switching controller and two high-speed linear regulator controllers in a 24-pin SO package. In a typical application, the switching controller supplies the MPU core, and...
LM2638 Key Features
- 2345 Provides 3 regulated voltages
- Power Good flag and output enable
- Charge pump pin
- Switching Section
- Synchronous rectification
- 5-bit DAC programmable down to 1.3V
- Typical ±1% DAC tolerance
- Switching frequency: 50 kHz to 1 MHz
- Over-voltage protection
- Two methods of over-current protection
LM2638 Applications
- Embedded power supplies for motherboards
