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KA1M0680RB

Fairchild
Part Number KA1M0680RB
Manufacturer Fairchild
Description Fairchild Power Switch(FPS)
Published Apr 25, 2005
Detailed Description www.fairchildsemi.com KA1M0680B/KA1M0680RB/ KA1H0680B/KA1H0680RFB Fairchild Power Switch(FPS) Features • • • • • • • • ...
Datasheet PDF File KA1M0680RB PDF File

KA1M0680RB
KA1M0680RB

Overview
www.
fairchildsemi.
com KA1M0680B/KA1M0680RB/ KA1H0680B/KA1H0680RFB Fairchild Power Switch(FPS) Features • • • • • • • • • • • • Precision fixed operating frequency KA1M0680B,KA1M0680RB (67KHz) KA1H0680B,KA1H0680RFB (100KHz) 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 Latch up mode (KA1M0680B,KA1H0680B) Auto restart (KA1M0680RB,KA1H0680RFB) Soft start Description The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components.
The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM controller IC.
PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/ turn-off driver, thermal shut down protection, over voltage protection, temperature compensated precision current sources for loop compensation and fault protection circuit.
compared to discrete MOSFET and controller or RCC switching converter solution, a Fairchild Power Switch(FPS) 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 design in either a flyback converter or a forward converter.
TO-3P-5L TO-3PF-5L 1 1 1.
DRAIN 2.
GND 3.
VCC 4.
FB 5.
Soft Start Internal Block Diagram #3 VCC 32V 5V Vref Good logic #5 Soft Start 5V OSC S R #4 FB 5µA − 1mA 2.
5R 1R 9V + 7.
5V − + 25V − Thermal S/D OVER VOLTAGE S/D + L.
E.
B 0.
1V S R Q #2 GND Q Internal bias #1 DRAIN SFET Power on reset Rev.
1.
0.
2 ©2001 Fairchild Semiconductor Corporation KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB Absolute Maximum Ratings Parameter Maximum Drain voltage (1) Symbol VD,MAX VDGR VGS IDM (3) Value 800 800 ±30 24.
0 455 16 6.
0 4.
0 30 −0.
3 to VSD 150 1.
21 −25 to +85 −55 to +150 Unit V V V ADC mJ A ADC ADC V V W W/°C ...


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