STR5A464S Datasheet | Sanken

For Non-Isolated Off-Line PWM Controllers with Integrated Power MOSFET STR5A464x Series Data Sheet Description The STR5A464x Series is power ICs for switching power supplies, incorporating a MOSFET and a current mode PWM controller IC for non-isolated Buck converter and Inverting converter topologies. The operation mode is automatically changed, in response to load, to the fixed switching frequency, to the switching frequency control, and to the burst oscillation mode. Thus the power efficiency is improved. The product achieves high cost-performance power supply systems with few external ponents. Features - Pb-free (Ro HS pliant) - Buck Converter - Inverting Converter - Current Mode PWM Control - Automatically Switch the Operation Mode According to the Load Heavy Load: 60 k Hz (typ.) Fixed Switching Frequency Mode Medium Load: Green Mode, 23 k Hz (typ.) to 60 k Hz (typ.) Light Load: Burst Oscillation Mode - No Current Detection Resistor Required (Built-in Current Sensing MOSFET) - Built-in Startup Function - Built-in Error Amplifier - Random Switching Function - Leading Edge Blanking Function - Soft Start Function - Protections Overload Protection (OLP): Auto-restart Overvoltage Protection (OVP): Auto-restart Thermal Shutdown with Hysteresis (TSD): Auto-restart Typical Application (Buck Convertor, STR5A464S) FR1 DR1 L1 C1 U1 VCC 1 FB 2 S/GND 8 S/GND 7 S/GND 6 D/ST...