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ZR431

LOW Knee CURRENT 2.5 ADJUSTABLE SHUNT REGULATOR

Datasheet

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Description

The ZR431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to any chosen voltage between 2.5 and 20 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.

Feature(s)

Surface mount SOT223 and SOT23 packages

TO92 package

2%, 1 % and 0.5% tolerance

Max. temperature coefficient 55 ppm/°C

Temperature compensated for operation over the full temperature range

Programmable output voltage

50μA to 100mA current sink capability

Low output noise

Application(s)

Shunt regulator

Series regulator

Voltage monitor

Over voltage/ under voltage protection

Switch mode power supplies

Product Specifications

Product Parameters

Type	Shunt regulator
Compliance (Only Automotive supports PPAP)	Standard
AEC Qualified	No
ReferenceVoltage (V)	2.5 V
Tolerance (%)	2, 1, 0.5 %
Maximum Input Voltage (V)	20 V
Sink Current (mA)	100 mA
Minimum Cathode Current for Regulation Typ (µA)	50 µA
Typical Temperature Coefficient (ppm/°C)	26 ppm/°C
Maximum Slope Resistance (Ω)	0.75 Ω
Operating Ambient Temperature Range (°C)	-40 to 85 °C

Technical Documents

SPICE Model

ZR431.spice.txt

Application Notes

an27.pdf (107 KB)

an37.pdf (612 KB)

Design tool model software

dn37.pdf (68 KB)

dn38.pdf (67 KB)

ICP Reports

SOT23epICP.pdf (1.5 MB)

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2642	2023-09-05	2024-03-05	Device End of Life (EOL)