Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT23

Back to ZR431L

ZR431L (Obsolete)

1.24V adjustable Shunt Regulator

Datasheet

Contact Sales

Description

The ZR431L is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 25mA. The output voltage may be set to any chosen voltage between 1.24 and 10 volts by selection of two external divider resistors. The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. The ZR431L is particularly used in the feedback control loop of switch mode power supplies. In this application the device 1.24 volt reference enables the generation of low voltage supplies, typically 3.3 volts or 3 volts.

Feature(s)

2.5% and 1% tolerance

Max. temperature coefficient 50 ppm/°C

Temperature compensated for operation over -40 to 85°C

100mA to 25mA current sink capability

Surface mount SOT23 package

Application(s)

Switch mode power supplies

Shunt regulator

Series regulator

Voltage monitor

Over voltage / under voltage protection

Specifications & Technical Documents

Product Parameters

Type	Shunt regulator
Compliance (Only Automotive Supports PPAP)	Standard
AEC Qualified	No
ReferenceVoltage (V)	1.24 V
Tolerance (%)	2.5, 1 %
Sink Current (mA)	25 mA
MaximumInput Voltage (V)	10
Minimum Cathode Current for Regulation Typ (µA)	30 µA
Typical Temperature Coefficient (ppm/°C)	26 ppm/°C
Maximum Slope Resistance (Ω)	2 Ω

Technical Documents

SPICE Model

ZR431L.spice.txt

ICP Reports

SOT23epICP.pdf (1.5 MB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

Something went wrong with your request. Please try again later. If this problem continues, please contact Diodes support for assistance.