
Fairchild Semiconductor
Description
The FSCM0465R is an integrated Pulse-Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high-voltage power switching regulator that combines an avalanche rugged SenseFET with a current mode PWM control block. The PWM controller includes an integrated fixed-frequency oscillator, under-voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for a loop compensation, and self-protection circuitry.
FEATUREs
■ Internal Avalanche Rugged SenseFET
■ Low Start-up Current (max. 40µA)
■ Low Power Consumption; under 1W at 240VAC and 0.4W Load
■ Precise Fixed Operating Frequency (66kHz)
■ Frequency Modulation for Low EMI
■ Pulse-by-Pulse Current Limiting (Adjustable)
■ Over-Voltage Protection (OVP)
■ Overload Protection (OLP)
■ Thermal Shutdown Function (TSD)
■ Auto-Restart Mode
■ Under-Voltage Lock Out (UVLO) with Hysteresis
■ Built-in Soft-Start (15ms)
APPLICATIONs
■ SMPS for VCR, SVR, STB, DVD, and DVCD
■ Adaptor
■ SMPS for LCD Monitor