LM2635 5-Bit Programmable Synchronous Buck Regulator Controller

National Semiconductor

Description

LM2635 5-Bit Programmable Synchronous Buck Regulator Controller May 2000 LM2635 5-Bit Programmable Synchronous Buck Regulator Controller General Des.
The LM2635 is a high speed controller designed specifically for use in synchronous DC/DC buck converters for the Pentium™ II or Deschutes microprocess.

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Datasheet Specifications

Part number: LM2635
Manufacturer: National Semiconductor
File Size: 288.33 KB
Datasheet: LM2635_NationalSemiconductor.pdf
Description: 5-Bit Programmable Synchronous Buck Regulator Controller

Features

* as required by Intel VRM specifications. Current limiting is achieved by monitoring the voltage drop across the rDS_ON of the high side MOSFET, which eliminates an expensive current sense resistor. The LM2635 employs a fixed-frequency voltage mode PWM architecture. To provide a faster response to a

Applications

* n Motherboard power supply/VRM for Cyrix Gxm, Cyrix Gxi, Cyrix MII, Pentium II, Deschutes, Pentium Pro, 6x86 and K6 processors n 5V to 1.8V
* 3.5V high current power supplies Typical Application DS100119-1 FIGURE 1. 5V to 1.8V
* 3.5V, 14A Power Supply Pentium™ is a trademark of Intel

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LM2635 5-Bit Programmable Synchronous Buck Regulator Controller National Semiconductor

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