Power management

Improve accuracy & reduce power with our shunt voltage references

Low IQ and high precision for your power and signal chain applications

We offer a wide variety of shunt voltage references (VREFs) for use in precision signal chain and optocoupler flyback converter applications. Our low-power shunt VREFs help your system meet US DoE, EU CoC and other industry standby power requirements. Our high accuracy shunt VREFs provide precision in demanding system requirements for applications using high-resolution data converters. We offer shunt VREFs for battery-operated and loop-powered industrial sensing applications in factory, building automation and smart meters, as well as AEC-Q100 qualified devices for automotive applications in hybrid electric vehicles and electric vehicles. Our devices meet the needs of other applications such as current sources, voltage monitors or LED drivers.

Low IQ

Reduce current regulation in your design to meet low-power standards

High accuracy

Improve precision on power rails or noncalibrated signal chain conditioning

Standard

Simplify your design with industry standard 1.24-V or 2.5-V voltage references

Automotive

Leverage AEC-Q100-qualified shunt voltage references for automotive designs

Featured shunt voltage references

ATL431LI

Adjustable 2.5-V to 36-V shunt voltage reference with 80-µA low current regulation and optimized input current for high performance in isolated power supply circuits

REF1112

1.2-µA low-IQ shunt voltage reference that provides a highly accurate 1.25-V output

LM4040-N

Enhanced Zener diode replacement that provides an accurate voltage at lower current. The D and E grades are cost competitive to Zener diodes.

Featured documentation

Automotive LED Lighting with Adjustable Shunt References

Learn how to use a simple adjustable shunt voltage reference to power LEDs in automotive lighting applications.

431 Device Nomenclature (Rev. B)

Refer to this document to learn more about our 431 and 432 family of shunt voltage references.

Using Voltage Supervisors in High Voltage Applications

Learn how shunt voltage references can help you successfully use voltage supervisors in high-voltage applications.

Technical Article

Featured technical articles for shunt VREFs


Technical resources

Browse complete board-level and system-level reference design circuits to help you quickly evaluate and customize your power system.

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