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Updated at 01/11/2025 10:30:15(UTC+8)

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Description

Description
The LM431 is a 3-terminal adjustable shunt regulator with ensured temperature stability over the entire temperature range of operation. The output voltage may be set at any level greater than 2.5 V (VREF) up to 36 V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turnon characteristics this device is an excellent replacement for many Zener diode applications.
Features
1• Average Temperature Coefficient 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 SOIC-8, SOT-23, and TO-92 Packages
Applications
• Adjustable Voltage or Current Linear and Switching Power Supplies
• Voltage Monitoring
• Current Source and Sink Circuits
• Circuits Requiring Precision References
• Zener Diode Replacements

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LM431BCM3 Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	3 Pin
Case/Package	SOT-23-3
Current Rating	15.0 A
Capacitance Tolerance	±1 %
Output Voltage	2.495V ~ 37V
Output Current	100 mA
Number of Channels	1 Channel
Number of Positions	3 Position
Input Voltage (Max)	37 V
Input Voltage (Min)	3 V
Output Voltage (Max)	36 V
Output Voltage (Min)	2.495 V
Output Current (Max)	100 mA
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Accuracy	1 %
Input Voltage	37 V
	Show
Size-Length	2.92 mm
Size-Width	1.3 mm
Size-Height	0.93 mm
Operating Temperature	0℃ ~ 70℃
Temperature Coefficient	±50 ppm/℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

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