Product Summary

The LM431AI is a programmable shunt regulator. The output voltage can be set any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors.

Parametrics

LM431AI absolute maximum ratings: (1)Cathode Voltage: 37 V; (2)Cathode Current Range (Continuous): -100 to +150 mA; (3)Reference Input Current Range: -0.05 to +10 mA; (4)Power Dissipation M, Z Suffix Package: 770 mW; (5)Power Dissipation N Suffix Package: 1000 mW; (6)Storage temperature: -65 to + 150 °C; (7)Junction Temperature: +150 °C.

Features

LM431AI features: (1)programmable output voltage to 36 volts; (2)low dynamic output impedance 0.20 Typical; (3)sink current capability of 1.0 to 100mA; (4)equivalent full-range temperature coefficient of 50ppm/°C typical; (5)temperature compensated for operation over full rated operating temperature range; (6)low output noise voltage; (7)fast turn-on response.

Diagrams

LM431AI dimension figure

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM431AIBP
LM431AIBP


IC VREF SHUNT PREC ADJ 4-USMD

Data Sheet

Negotiable 
LM431AIBPX
LM431AIBPX


IC VREF SHUNT PREC ADJ 4-USMD

Data Sheet

Negotiable 
LM431AIM/NOPB
LM431AIM/NOPB

National Semiconductor (TI)

Voltage & Current References

Data Sheet

0-1: $0.43
1-25: $0.33
25-100: $0.29
100-250: $0.25
LM431AIM3/NOPB
LM431AIM3/NOPB

National Semiconductor (TI)

Voltage & Current References ADJ PREC ZENER SHUNT REG

Data Sheet

0-1: $0.47
1-25: $0.33
25-100: $0.28
100-250: $0.24
LM431AIM
LM431AIM

National Semiconductor (TI)

Voltage & Current References

Data Sheet

0-2185: $0.16
2185-5035: $0.15
5035-10070: $0.14
LM431AIM3
LM431AIM3

National Semiconductor (TI)

Voltage & Current References

Data Sheet

0-1000: $0.16
1000-3000: $0.16
3000-5000: $0.15
5000-10000: $0.14
LM431AIMX/NOPB
LM431AIMX/NOPB

National Semiconductor (TI)

Voltage & Current References

Data Sheet

0-1: $0.43
1-25: $0.33
25-100: $0.29
100-250: $0.25
LM431AIM3X/NOPB
LM431AIM3X/NOPB

National Semiconductor (TI)

Voltage & Current References

Data Sheet

0-1: $0.43
1-25: $0.33
25-100: $0.29
100-250: $0.25