3S0680RFB Datasheet: KA3S0680RF





3S0680RFB KA3S0680RF Datasheet

Part Number 3S0680RFB
Description KA3S0680RF
Manufacture Fairchild Semiconductor
Total Page 12 Pages
PDF Download Download 3S0680RFB Datasheet PDF

Features: www.fairchildsemi.com KA3S0680RB/KA3S06 80RFB Fairchild Power Switch(FPS) Featu res • Wide operatimg frequency range up to (150kHz) • Pulse by pulse over current limiting • Over load protecti on • Over voltage protecton (Min. 23V ) www.DataSheet4U.com • Internal ther mal shutdown function • Under voltage lockout • Internal high voltage sens e FET • External sync terminal • Au to Restart Mode Description The Fairch ild Power Switch(FPS) product family is specially designed for an off line SMP S with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and curren t mode PWM controller IC. controller IC features a trimmed oscillator, under v oltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver , thermal shut down protection, over vo ltage protection, temperature compensat ed precision current sources for loop c ompensation and fault protection circui t. compared to discrete MOSFET and controller or RCC switching converter solution.

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www.fairchildsemi.com
KA3S0680RB/KA3S0680RFB
Fairchild Power Switch(FPS)
Features
• Wide operatimg frequency range up to (150kHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
www.DataSheet4U.coImnternal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• External sync terminal
• Auto Restart Mode
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. controller 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, 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 C-TV power supply.
TO-3P-5L
TO-3PF-5L
11
1.DRAIN 2.GND 3.VCC 4.FB 5.Sync
Internal Block Diagram
#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
S
Q
R
25V
OVER VOLTAGE S/D
Power on reset
©2001 Fairchild Semiconductor Corporation
SFET
#1 DRAIN
#2 GND
Rev.1.0.2

                    
              






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