KA1M0965RTU View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
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KA1M0965RTU Datasheet PDF : 10 Pages
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KA1M0965R
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Precision Fixed Operating Frequency (67kHz)
• 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
• Auto Restart
• 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
Internal Block Diagram
1
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
#3 VCC
#5 Soft Start
#4 FB
32V
5V
Internal
Vref
bias
Good
logic
5V
5µA
7.5V
25V
OSC
S
Q
R
−
1mA 2.5R
5V 1R
+
L.E.B
0.1V
+
−
+
Thermal S/D
−
OVER VOLTAGE S/D
S
Q
R
Power on reset
©2003 Fairchild Semiconductor Corporation
SFET
#1 DRAIN
#2 GND
Rev.1.0.3
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