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Fairchild - SPS

Numéro de référence KA2S0680
Description SPS
Fabricant Fairchild 
Logo Fairchild 





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KA2S0680 fiche technique
SPS
KA2S0680
SPS
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 turn-
on/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.
TO-3P-5L
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
BLOCK DIAGRAM
ORDERING INFORMATION
Device Package Rating
KA2S0680 TO-3P-5L 800V, 6A
Topr (°C)
25°C to +85°C
#3 VCC
#5 Sync
#4 FB
32V
5V +
6.4V
2µA 1mA 2.5R
9V 1R
+
5V Internal
Vref bias
Good
logic
OSC
+
S
Q
R
L.E.B
0.1V
7.5V
+ Thermal S/D
25V
OVER VOLTAGE S/D
S
Q
R
Power on reset
SFET
#1 DRAIN
#2 GND
© 1999 Fairchild Semiconductor Corporation
Rev. B
1

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