Product Summary
The LM431AC is a 3-terminal adjustable shunt regulator with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. The LM431AC has a typical output impedance of 0.2Ω Active output circuitry provides a very sharp turn-on characteristic, making the LM431AC excellent replacements for zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies.
Parametrics
LM431AC absolute maximum ratings: (1)VKA, Cathode voltage: 37 V; (2)Continuous cathode current range: –100 to +150 mA; (3)Reference input current range: 0.05 to 10 mA; (4)Operating free-air temperature range: 0 to +70℃; (5)TSTG, Temperature storage range: –65 to 150℃; (6)Lead temperature 1.6mm (1/16 in.) from case for 10 sec: 260℃.
Features
LM431AC features: (1)Equivalent full-range temperature coefficient: 30ppm/℃; (2)0.2Ω typical output impedance; (3)Sink current capability: 1mA to 100mA; (4)Low output noise; (5)Adjustable output voltage: VREF to 36V.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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LM431AC |
Other |
Data Sheet |
Negotiable |
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LM431ACM |
National Semiconductor (TI) |
Voltage & Current References |
Data Sheet |
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LM431ACM/NOPB |
National Semiconductor (TI) |
Voltage & Current References |
Data Sheet |
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LM431ACM3/NOPB |
National Semiconductor (TI) |
Voltage & Current References ADJ PREC ZENER SHUNT REG |
Data Sheet |
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LM431ACM3 |
National Semiconductor (TI) |
Voltage & Current References |
Data Sheet |
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LM431ACM_Q |
Fairchild Semiconductor |
Voltage & Current References Program Shunt Reg |
Data Sheet |
Negotiable |
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LM431ACZ |
Fairchild Semiconductor |
Voltage & Current References Program Shunt Reg |
Data Sheet |
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LM431ACMX/NOPB |
National Semiconductor (TI) |
Voltage & Current References |
Data Sheet |
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