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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.

Product portfolio

Low IQ

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

High precision

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

Power trends

Power management is at the center of enabling the continued integration of electronics in our lives. For decades, TI has been at the forefront of developing new process, packaging and circuit-design technologies to deliver the best power devices for your design. Check out our featured devices below, designed to help you address low quiescent current and high accuracy challenges.

Shunt voltage references for low quiescent current (IQ)

Minimize idle power consumption with low quiescent current (IQ) shunt voltage references. Low idle power consumption in the power supply can help you design Energy Star-rated appliances and small but reliable power adapters. Our low IQ shunt voltage references can help your power-supply designs achieve low standby power and longer battery run times, while lowering system costs.

ATL431LI

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

LM385-ADJ

Adjustable 1.24-V to 5.4-V output shunt voltage reference with 10-µA low current regulation

REF1112

Highly accurate 1.25-V output shunt voltage reference with 1.2-µA low current regulation

Shunt voltage references for high precision

Minimize power consumption and extend battery life with our high-accuracy shunt references. For some power supplies, such as those used in servers and industrial instruments, accuracy and stability requirements demand more precise voltage references that can keep the output accurate across changes in input voltage, output load and operating temperature. We have a comprehensive portfolio of high-accuracy, low-temperature coefficient shunt voltage references for such applications to help enable a more efficient power supply.

LM4050-N

High-accuracy (0.1%) and 50 ppm/°C temperature drift shunt precision voltage reference with 60-µA low current regulation

LM4040-N

High-accuracy (0.1%) and 100 ppm/°C temperature drift shunt precision voltage reference with 60-µA low current regulation

LM4051-N

High-accuracy (0.1%) and 50 ppm/°C temperature drift shunt precision voltage reference with adjustable 1.24-V to 10-V output

Learn more about shunt voltage references

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.

Tips and tricks for designing with voltage references

Tips and Tricks for Designing with Voltage References provides a comprehensive overview of voltage reference basics and application design.