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PDF KA431SL Data sheet ( Hoja de datos )

Número de pieza KA431SL
Descripción Programmable Shunt Regulator
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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No Preview Available ! KA431SL Hoja de datos, Descripción, Manual

www.fairchildsemi.com
KA431S/KA431SA/KA431SL
Programmable Shunt Regulator
Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.20 Typical
• Sink Current Capability of 1.0 to 100mA
• Equivalent Full-Range Temperature Coefficient of
www.DataSheet4U.co5m0ppm/°C Typical
• Temperature Compensated for Operation Over Full Rated
Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response
Description
The KA431S/KA431SA/KA431SL are three-terminal
adjustable regulator series with a guaranteed thermal
stability over applicable temperature ranges. The output
voltage may be set to any value between VREF
(approximately 2.5 volts) and 36 volts with two external
resistors These devices have a typical dynamic output
impedance of 0.2W Active output circuitry provides a very
sharp turn on characteristic, making these devices excellent
replacement for zener diodes in many applications.
SOT-23F
3
12
MF- 1.Cathode 2. Ref 3. Anode
MF2- 1. Ref 2. Cathode 3. Anode
Internal Block Diagram
REFERENCE
+
-
2.5 Vref
REFERENCE (R)
ANODE
CATHODE (K)
ANODE(A)
CATHODE
©2005 Fairchild Semiconductor Corporation
Rev. 1.0.6

1 page




KA431SL pdf
Typical Performance Characteristics
KA431S/KA431SA/KA431SL
150
100
V =V
KA REF
TA = 25oC
50
0
www.DataSheet4U.com
-50
-100
-2
-1
01
VKA, Cathode Voltage (V)
2
3
Figure 4. Cathode Current vs. Cathode Voltage
800
600
VKA = VREF
TA = 25oC
400
IKA(MIN)
200
0
-200
-1
012
VKA, CATHODE VOLTAGE (V)
3
Figure 5. Cathode Current vs. Cathode Voltage
0.100
0.075
0.050
0.025
0.000
-50 -25 0 25 50 75 100 125
TA, Ambient Temperature (oC)
Figure 6. OFF-State Cathode Current vs.
Ambient Temperature
60
50
40
30
20
10
0
-10
1k
TA = 25oC
IKA = 10mA
10k 100k 1M
Frequency (Hz)
10M
Figure 8. Small Signal Voltage Amplification vs. Frequency
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-50
-25
0
25 50 75 100 125
TA, Ambient Temperature (oC)
Figure7. Reference Input Current vs.
Ambient Temperature
6
TA=25oC
5
4
INPUT
3
OUTPUT
2
1
0
0 4 8 12 16 20
Time (us)
Figure 9. Pulse Response
5

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