
Fairchild Semiconductor
Description
The FAN5069 combines a high-efficiency Pulse-WidthModulated (PWM) controller and an LDO (Low DropOut) linear regulator controller. Synchronous rectification provides high efficiency over a wide range of load currents. Efficiency is further enhanced by using the low-side MOSFET’s RDS(ON) to sense current.
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
■ Programmable Switching Frequency (200KHz 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
■ 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
■ Industrial Power Supplies
■ High-Power DC-to-DC Converters