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LM431BIM3/NOPB Voltage References ADJ PREC ZENER SHUNT REG 

 Description

 The LM431 is a 3-terminal adjustable shunt regulator 1• Average Temperature Coefficient 50 ppm/°C

with ensured temperature stability over the entire • Temperature Compensated for Operation Over

temperature range of operation. The output voltage the Full Temperature Range may be set at any

level greater than 2.5 V (VREF) up • Programmable Output Voltage to 36 V merely by selecting two

external resistors that • Fast Turnon Response act as a voltage divided network. Due to the sharp

turnon characteristics this device is an excellent • Low-Output Noise replacement for many Zener

diode applications. • Low-Dynamic Output Impedance.

Features
●Average Temperature Cofficient 50 ppm/°C
●Temperature Compensated for Operation Over
the Full Temperature Range
●Programmable Output Voltage
●Fast Turnon Response
●Low-Output Noise
●Low-Dynamic Output Impedance
●Available in Space- Saving SOlC-8, SOT-23, and
TO-92 Packages

1. Programmable voltage reference: The LM431 can be programmed to provide a precise output voltage

reference by connecting external resistors to set the desired voltage level.

1. Precision and accuracy: It offers a high level of precision and accuracy in voltage regulation, with low

initial tolerance and temperature coefficient.

1. Wide voltage range: The LM431BIM3/NOPB can operate with a wide input voltage range, typically

from 2.5V to 36V, making it suitable for a variety of power supply applications.

1. Low dynamic impedance: The IC exhibits low dynamic impedance, providing good stability and

2. regulation even with varying load conditions.

3. Adjustable output voltage: The output voltage of the LM431 can be adjusted through external

resistors, allowing for flexibility in setting the desired voltage level.

1. Low quiescent current: The IC has low quiescent current consumption, which helps in minimizing

power dissipation and energy efficiency.

1. Sink current capability: The LM431 can sink current from an external source, making it suitable for

applications that require current sinking or load control.

1. Small package: The LM431BIM3/NOPB is available in a small SOT-23-3 package, which is a

surface mount package with three pins.

1. Wide temperature range: It can operate over a wide temperature range, typically from -40°C

to 85°C, allowing for reliable operation in various environments

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2. Applications

●Adjustable Voltage or Current Linear and

Switching Power Supplies
●Voltage Monitoring
●Current Source and Sink Circuits
●Circuits Requiring Precision References
●Zener Diode Replacements