SPS
KA2S0680
SPS
TO-3P-5L
The SPS product family is specially designed for an off line SMPS with minimal external com...
SPS
KA2S0680
SPS
TO-3P-5L
The SPS product family is specially designed for an off line SMPS with minimal external component. The SPS consist of high
voltage Power SenseFET and current mode PWM IC. Included control IC features a trimmed oscillator, under
voltage lock out, leading edge blanking, optimized gate turnon/turn-off driver, thermal shut down protection, over
voltage protection, and temperature compensated precision current source for loop compensation and fault protection circuitry. Compared to discrete
MOSFET and controller or RCC switching converter solution, a SPS can reduce total component count, design size, weight and at the same time increase efficiency, productivity and system reliability. It has a basic platform well suited for cost effective monitor power supply.
1.DRAIN 2. GND 3. VCC 4. FB 5. Sync
FEATURES
Wide operating frequency range up to 150kHz Pulse by pulse over current limiting Over load protection Over
voltage protection (Min. 23V) Internal thermal shutdown function Under
voltage lockout Internal high
voltage sense FET External sync terminal Latch up Mode
ORDERING INFORMATION
Device KA2S0680 Package TO-3P-5L Rating 800V, 6A Topr (°C) −25°C to +85°C
BLOCK DIAGRAM
#3 VCC 32V 5V Vref − 5V + 6.4V #4 FB − 1mA 2.5R 1R 9V + 7.5V − + 25V − Thermal S/D OVER
VOLTAGE S/D + OSC S R 2µA L.E.B 0.1V S R Q #2 GND Q Good logic Internal bias #1 DRAIN SFET
#5 Sync
Power on reset
Rev. B
1
© 1999 Fairchild Semiconductor Corporation
KA2S068...