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PDF LM431SBCMF Data sheet ( Hoja de datos )
| Número de pieza | LM431SBCMF | |
| Descripción | Programmable Shunt Regulator | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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LM431SA/LM431SB/LM431SC
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
50ppm/°C Typical
• Temperature Compensated for Operation Over Full Rated
Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response
Description
The LM431SA/LM431SB/LM431SC are three terminal
output adjustable regulators with thermal stability over
operating temperature range. The output voltage can be set
any value between VREF (approximately 2.5 volts) and 36
volts with two external resistors. These devices have a
typical dynamic output impedance of 0.2Ω Active output
circuit provides a sharp turn-on characteristic, making these
devices excellent replacement for Zener Diodes in many
applications.
SOT-89
1
1. Ref 2. Anode 3. Cathode
SOT-23F
3
12
1. Cathode 2. Ref 3. Anode
Internal Block Diagram
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.3
1 page  
Typical Performance Characteristics
LM431SA/LM431SB/LM431SC
150
100
VKA = VREF
TA = 25oC
50
0
-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
200
I
KA(MIN)
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
Frequency (Hz)
1M
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
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LM431SBCMF.PDF ] | |
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