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FSQ0370RLA: 700V Integrated Power Switch with 100kHz frequency and adjustable current limit for 19W offline flyback converters

Datasheet: FSQ0370RLA-D.pdf
Rev. A (730kB)
Product Overview
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The FSQ0370 consists of an integrated Current Mode Pulse Width Modulator (PWM) and an avalanche rugged 700V SenseFET. It is specifically designed for high-performance offline Switched Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking (LEB), an optimized gate turn-on / turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated precision current sources for loop compensation and fault protection circuitry.Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ0370 reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform that is well suited for the design of cost-effective flyback converters, such as in PC auxiliary power supplies.
Features
 
  • Internal Avalanche Rugged 700V SenseFET
  • Consumes Only 0.8W at 230VAC and 0.5W Load with Burst-Mode Operation
  • Precision Fixed Operating Frequency: 100kHz
  • Internal Startup Circuit and Built-in Soft-Start
  • Pulse-by-Pulse Current Limiting, Auto-Restart Mode
  • Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD)
  • Under-Voltage Lockout (UVLO)
  • Low Operating Current: 3mA
  • Adjustable Peak Current Limit
Applications
  • Desktop PC
  • LCD TV
  • PDP TV
Technical Documentation & Design Resources
Design & Development Tools (2) Data Sheets (1)
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
FSQ0370RLA Active
Pb-free
Halide free
FSQ0370RLA PDIP-8 GW 3 250 Tape and Reel 1000 $0.96
Market Leadtime (weeks) : 8 to 12
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