描述 Description

The FAN5099 combines a high-efficiency pulse-width modulated (PWM) controller and an LDO (low drop out) linear regulator controller. The PWM controller is designed to operate over a wide frequency range (50kHz to 600kHz) to accommodate a variety of applications.

特性 Features

■ General Purpose PWM Regulator and LDO Controller

■ Input Voltage Range: 3V to 24V

■ Output Voltage Range: 0.8V to 15V

■ VCC

– 5V

– Shunt Regulator for 12V Operation

■ Support for Ceramic Cap on PWM Output

■ Programmable Current Limit for PWM Output

■ Wide Programmable Switching Frequency Range (50kHz to 600kHz)

■ RDS(ON) Current Sensing

■ Internal Synchronous Boot Diode

■ Soft-Start for both PWM and LDO

■ Multi-Fault Protection with Optional Auto-restart

■ 16-Pin TSSOP Package

Applications

■ High-Efficiency (80+) Computer Power Supplies

■ PC/Server Motherboard Peripherals

– VCC_MCH (1.5V), VDDQ (1.5V) and VTT_GTL (1.25V)

■ Power Supply for

– FPGA, DSP, Embedded Controllers, Graphic Card Processor, and Communication Processors

■ High-Power DC-to-DC Converters