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KA1M0880BTU Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. KA1M0880BTU
Description  Fairchild Power Switch(FPS)
Download  10 Pages
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA1M0880BTU Datasheet(HTML) 1 Page - Fairchild Semiconductor

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©2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.2
Features
• Precision fixed operating frequency
• KA1L0880B(50KHz),KA1M0880B(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
• Latch up mode
•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
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
1
Internal Block Diagram
#3 VCC
32V
5
µA
5V
2.5R
1R
1mA
0.1V
+
OVER VOLTAGE S/D
+
7.5V
25V
Thermal S/D
S
R
Q
Power on reset
+
L.E.B
S
R
Q
OSC
5V
Vref
Internal
bias
Good
logic
SFET
#1 DRAIN
#2 GND
#4 FB
#5 Soft Start
9V
KA1L0880B/KA1M0880B
Fairchild Power Switch(FPS)


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