DESCRIPTION

The LX1669 is a Monolithic Switching Regulator Controller IC designed to provide a low cost, high performance adjustable power supply for advanced microprocessors and other applications requiring a very fast transient response and a high degree of accuracy. It provides a programmable switching regulator output suitable for powering Pentium® II and other processors.

KEY FEATURES

■ 5-Bit Programmable Output For CPU Core Supply

■ Power Solution For Pentium II Processors

■ No Sense Resistor Required For Short-Circuit Current Limiting

■ Soft-Start And Hiccup-Mode Current Limiting Functions

■ Modulated Constant Off-Time Control Mechanism For Fast Transient Response And Simple System Design

■ Power Good Flag

■ Over-Voltage Pin Can Drive SCR Crowbar Or Turn Off Signal Silver-Box Power Supply

■ Digital-Compatible Inputs (Including VID Pins)

APPLICATIONS

■ Socket 7 Processor Supplies

■ Pentium II Processor Supplies

■ Deschutes CPU & L2-Cache Memory Supplies

■ Voltage Regulator Modules

■ General Purpose And Microprocessor DC:DC Supplies

LX1669CD属于集成电路（IC） > 特殊用途稳压器。美高森美公司制造生产的LX1669CD特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。