
Fairchild Semiconductor
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.
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