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PDF KA1M0765R-TU Data sheet ( Hoja de datos )
| Número de pieza | KA1M0765R-TU | |
| Descripción | Fairchild Power Switch(FPS) | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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KA1M0765R/KA1M0765RC
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Precision fixed operating frequency (67kHz)
• Pulse by pulse current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• Auto restart
• 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
frequency oscillator, under voltage lock out, leading edge
blanking, optimized gate turn-on/turn-off driver, thermal
shutdown protection, over voltage protection, temperature
compensated precision current sources for loop
compensation and fault protection circuit. compared to
discrete MOSFET and PWM controller or RCC 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-220-5L
11
1. DRAIN 2. GND 3. Vcc 4. FB 5. S/S
Internal Block Diagram
#3 VCC
#5 Soft Start
#4 FB
32V 5V Internal
Vref bias
Good
logic
5V
5µA
7.5V
25V
OSC
S
Q
R
1mA 2.5R
9V 1R
−
+
L.E.B
0.1V
+
−
+ Thermal S/D
S
Q
R
−
OVER VOLTAGE S/D
Power on reset
SFET
#1 DRAIN
#2 GND
©2001 Fairchild Semiconductor Corporation
Rev.1.0.2
1 page  
Typical Performance Characteristics
(These characteristic graphs are normalized at Ta = 25°C)
KA1M0765R/KA1M0765RC
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
lIOopP 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
IIFfbB 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
5 Page 
Package Dimensions (Continued)
TO-220-5L(Forming)
KA1M0765R/KA1M0765RC
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet KA1M0765R-TU.PDF ] | |
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