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1M0680 Schematic ( PDF Datasheet ) - Fairchild

Teilenummer 1M0680
Beschreibung KA1M0680
Hersteller Fairchild
Logo Fairchild Logo 




Gesamt 12 Seiten
1M0680 Datasheet, Funktion
www.DataSheet4U.com
KA1M0680B/KA1M0680RB/
KA1H0680B/KA1H0680RFB
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Precision fixed operating frequency
• KA1M0680B,KA1M0680RB (67KHz)
• KA1H0680B,KA1H0680RFB (100KHz)
• 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 (KA1M0680B,KA1H0680B)
• Auto restart (KA1M0680RB,KA1H0680RFB)
• 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
TO-3PF-5L
Internal Block Diagram
1
1
1.DRAIN 2.GND 3.VCC 4.FB 5.Soft Start
#3 VCC
#5 Soft Start
#4 FB
32V 5V Internal
Vref bias
Good
logic
5V
5µA
7.5V
25V
1mA 2.5R
9V 1R
+
OSC
+
S
Q
R
L.E.B
0.1V
+ Thermal S/D
OVER VOLTAGE S/D
S
Q
R
Power on reset
©2001 Fairchild Semiconductor Corporation
SFET
#1 DRAIN
#2 GND
Rev.1.0.2






1M0680 Datasheet, Funktion
www.DataSheet4U.com
KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB
Typical Performance Characteristics (Continued)
(These characteristic graphs are normalized at Ta=25°C)
Fig.7 Stop Threshold Voltage
1.15
1.1
1.05
Vsthto(Lp) 1
0.95
0.9
0.85
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 7. Stop Threshold Voltage
1.2
1.15
1.1
1.05
Vz 1
0.95
0.9
0.85
0.8
-25
Fig.9 Vcc Zener Voltage
0 25 50 75 100 125 150
Temperature [°C]
Figure 9. VCC Zener Voltage
Fig.11 Shutdown Delay Current
1.2
1.15
1.1
1.05
Idelay 1
0.95
0.9
0.85
0.8
-25 0 25 50 75 100 125
Temperature [°C]
150
Figure 11. Shutdown Delay Current
Fig.8 Maximum Duty Cycle
1.15
1.1
1.05
Dmax 1
0.95
0.9
0.85
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 8. Maximum Duty Cycle
Fig.10 Shutdown Feedback Voltage
1.15
1.1
1.05
Vsd 1
0.95
0.9
0.85
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 10. Shutdown Feedback Voltage
Fig.12 Over Voltage Protection
1.15
1.1
1.05
Vovp 1
0.95
0.9
0.85
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 12. Over Voltage Protection
6

6 Page









1M0680 pdf, datenblatt
www.DataSheet4U.com
KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB
Ordering Information
Product Number
KA1M0680B-TU
KA1M0680B-YDTU
KA1M0680RB-TU
KA1M0680RB-YDTU
KA1H0680B-TU
KA1H0680B-YDTU
KA1H0680RFB-TU
KA1H0680RFB-YDTU
TU : Non Forming Type
YDTU : Forming Type
Package
TO-3P-5L
TO-3P-5L(Forming)
TO-3P-5L
TO-3P-5L(Forming)
TO-3P-5L
TO-3P-5L(Forming)
TO-3PF-5L
TO-3PF-5L(Forming)
Rating
800V, 6A
800V, 6A
800V, 6A
800V, 6A
Fosc
67kHz
67kHz
100kHz
100kHz
Latch/Auto
Latch up mode
Auto restart mode
Latch up mode
Auto restart mode
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.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
10/17/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation

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