1M0680 Datasheet PDF - Fairchild
Part Number | 1M0680 | |
Description | KA1M0680 | |
Manufacturers | Fairchild | |
Logo | ||
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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
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Typical Performance Characteristics
(These characteristic graphs are normalized at Ta=25°C)
KA1M0680B/KA1M0680RB/KA1H0680B/KA1H0680RFB
Fig.1 Operating Frequency
1.2
1.15
1.1
1.05
Fosc 1
0.95
0.9
0.85
0.8
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 1. Operating Frequency
1.2
1.15
1.1
1.05
IIOoPp 1
0.95
0.9
0.85
0.8
-25
Fig.3 Operating Current
0 25 50 75 100 125 150
Temperature [°C]
Figure 3. Operating Supply Current
1.5
1.3
IISs tTart1.1
0.9
0.7
0.5
-25
Fig.5 Start up Current
0 25 50 75 100 125 150
Temperature [°C]
Figure 5. Start up Current
Fig.2 Feedback Source Current
1.2
1.15
1.1
1.05
Ifb 1
0.95
0.9
0.85
0.8
-25 0 25 50 75 100 125
Temperature [°C]
150
Figure 2. Feedback Source Current
1.1
1.05
IIopveeark 1
0.95
0.9
0.85
0.8
-25
Fig.4 Max Inductor Current
0 25 50 75 100 125 150
Temperature [°C]
Figure 4. Peak Current Limit
Fig.6 Start Threshold Voltage
1.15
1.1
1.05
Vtsht(aHr)t 1
0.95
0.9
0.85
-25 0
25 50 75 100 125 150
Temperature [°C]
Figure 6. Start Threshold Voltage
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 1M0680 electronic component. |
Information | Total 12 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ 1M0680.PDF Datasheet ] |
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