FSQ100 Datasheet | Fairchild Semiconductor

Features - Internal Avalanche-Rugged Sense FET - Precision Fixed Operating Frequency: 67KHz - Burst-Mode Operation - Internal Startup Circuit - Pulse-by-Pulse Current Limiting - Over-Voltage Protection (OVP) - Overload Protection (OLP) - Internal Thermal Shutdown Function (TSD) - Auto-Restart Mode - Under-Voltage Lockout (UVLO) with Hysteresis - Built-in Soft-Start - Secondary-Side Regulation Applications - Charger & Adapter for Mobile Phone, PDA, MP3 - Auxiliary Power for White Goods, PC, C-TV, Monitor Related Application Notes - AN-4137 - Design Guidelines for Off-line Flyback Converters using FPS™ - AN-4141 - Troubleshooting and Design Tips for Fairchild Power Switch (FPS™) Flyback Applications - AN-4147 - Design Guidelines for RCD Snubber of Flyback - AN-4134 - Design Guidelines for Off-line Forward Converters using FPS™ - AN-4138 - Design Considerations for Battery Charger Using Green Mode Fairchild Power Switch (FPS™) Description The FSQ100 consists of an integrated Pulse Width Modulator (PWM) and Sense FET, specifically designed for high-performance, off-line, Switch-Mode Power Supplies (SMPS) with minimal external ponents. This device is an integrated high-voltage power switching regulator that bines a VDMOS Sense FET 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 turn-on/turn-off driver, Thermal Shutdown (TSD) protection, and temperature-pensated precision-current sources for loop pensation and fault protection circuitry. When pared to a discrete MOSFET and controller or RCC solution, the FSQ100 device reduces total ponent count and design size and weight, while increasing efficiency, productivity, and system reliability. This device provides a basic platform well suited for cost-effective flyback converters. Ordering Information Product Number Package 8-DIP Marking...