ka2s0765 Fairchild Semiconductor, ka2s0765 Datasheet

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ka2s0765

Manufacturer Part Number
ka2s0765
Description
Fairchild Power Switch Fps
Manufacturer
Fairchild Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KA2S0765
Manufacturer:
FAIRCHILD
Quantity:
12 500
Features
• Wide operatimg frequency range up to (150kHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• External sync terminal
• Latch up Mode
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
K A 2 S 0 7 6 5
Fai r c h i l d Pow e r Sw i t c h (FPS)
#5 Sync
#3 V
#4 FB
CC
5V
2 A
7.5V
25V
32V
1mA
+
+
9V
+
2.5R
OVER VOLTAGE S/D
1R
6.4V
Thermal S/D
+
OSC
Vref
5V
0.1V
L.E.B
Good
logic
S
R
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. 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, temperature compensated precision
current sources for loop compensation and fault protection
circuit. compared to discrete MOSFET and controller or
R
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 Monitor power supply.
1.DRAIN 2. GND 3. Vcc 4. FB 5. Sync
Q
CC
Power on reset
TO-3P-5L
Internal
bias
switching converter solution, a Fairchild Power
S
R
1
Q
SFET
www.fairchildsemi.com
#1 DRAIN
#2 GND
Rev.1.0.2

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ka2s0765 Summary of contents

Page 1

... 1mA 7.5V 25V ©2001 Fairchild Semiconductor Corporation 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. control IC features a trimmed oscillator, under ...

Page 2

... KA2S0765 Absolute Maximum Ratings Characteristic (1) Maximum Drain voltage Drain Gate voltage (R = Gate source (GND) voltage (2) Drain current pulsed (3) Single pulsed avalanche energy Continuous drain current (T = Continuous drain current (T =100 C) C Maximum Supply voltage Input voltage range Total power dissipation ...

Page 3

... V =10V, I =7.0A =0.5BV DS DSS switching time are Qgs essentially independent of Qgd operating temperature) Min. Typ. Max. 650 - - - - 200 - 1.25 1.6 3 1600 - - 310 - - 120 - , I =7. (MOSFET - 9 29.3 - KA2S0765 Unit ...

Page 4

... D - max I Ta=25 C, Vfb=GND Ta= Vfb V delay Sync & S/S=GND SS V Vfb=5V SYTH Vref Ta=25 C Vref + KA2S0765 OVER ( OVP I V =14V START CC I Ta= =20mA Z CC Min. Typ. Max. Unit ...

Page 5

... Figure 4. Peak Current Limit 1.15 1.1 1.05 Vstart 1 0.95 0.9 0.85 100 125 150 ] C Figure 6. Start Threshold Voltage Fig.2 Feedback Source Current 100 125 150 Temperature [ ] C Fig.4 Max Inductor Current 100 125 150 Temperature [ ] C Fig.6 Start Threshold Voltage - 100 125 150 Temperature [ ] C KA2S0765 5 ...

Page 6

... KA2S0765 Typical Performance Characteristics (These characteristic graphs are normalized Fig.7 Stop Threshold Voltage 1.15 1.1 1.05 V Vstop th(L) 1 0.95 0.9 0.85 - Temperature [ Figure 7. Stop Threshold Voltage Fig.9 Vcc Zener Voltage 1.2 1.15 1.1 1. 0.95 0.9 0.85 0.8 - Temperature [ Figure 9. V Zener Voltage CC Fig.11 Shutdown Delay Current 1.2 1.15 1.1 1.05 Idelay 1 0 ...

Page 7

... Fig.13 Soft Start Voltage 1.15 1.1 1.05 Vss 1 0.95 0.9 0.85 - Temperature [ Figure 13. Soft Start Voltage (Continued) 2.5 2 1.5 Rdson ( ) 1 0.5 0 100 125 150 ] C Figure 14. Static Drain-Source on Resistance Fig.14 Drain Source Turn-on Resistance - 100 125 150 Temperature [ ] C KA2S0765 7 ...

Page 8

... KA2S0765 Package Dimensions 8 TO-3P-5L ...

Page 9

... Package Dimensions (Continued) TO-3P-5L (Forming) KA2S0765 9 ...

Page 10

... KA2S0765 Ordering Information Product Number Package KA2S0765-TU TO-3P-5L KA2S0765-YDTU TO-3P-5L(Forming Non Forming Type YDTU : Forming Type DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...

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