元器件交易网www.1mpi.com FSDM311 Green Mode Fairchild Power Switch (FPS ) July 2006 FSDM311 Green Mode Fairchild Power Switch (FPS ) Features Internal Avalanche Rugged SenseFET Precision Fixed Operating Frequency (67KHz) Advanced Burst-Mode Operation (power consumption < 0.1W at 265VAC, no-load condition) Internal Start-up Circuit Pulse-by-Pulse Current Limit Over-Voltage Protection (OVP) Over-Load Protection (OLP) Internal Thermal Shutdown Function (TSD) Auto-Restart Mode Under-Voltage Lockout (UVLO) with Hysteresis Built-in Soft-Start Description The FSDM311, consisting of integrated Pulse-Width Modulator (PWM) and SenseFET, is specifically designed for high-performance, off-line Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high-voltage, power-switching regulator which combines a VDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features include: a fixed oscillator, Under-Voltage Lockout (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turnon/turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated, precision-current sources for loop-compensation and fault-protection circuitry. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSDM311 device reduces total component count and design size and weight; while increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for the design of costeffective flyback converters. Applications Charger & Adapter for Mobile Phone, PDA & MP3 Auxiliary Power for White Goods, PC, C-TV & Monitor Related Application Notes AN-4137, AN-4141, AN-4147 (Flyback) AN-4134 (Forward) AN-4138 (Charger) Ordering Information Product Number FSDM311 FSDM311L Package 8DIP 8LSOP Marking Code DM311 DM311 BVDSS 650V 650V fOSC 67KHz 67KHz RDS (ON) 14 14 FPS is a trademark of Fairchild Semiconductor Corporation. © 2003 Fairchild Semiconductor Corporation FSDM311 Rev. 1.1.0 7/14/06 www.1mpi.com