TLV431CLPM

Overview

The TLV431CLPM is a programmable shunt voltage reference from Texas Instruments, designed for precision applications requiring low power consumption. It operates within a wide supply voltage range of 2.5V to 36V and provides an adjustable output voltage from 1.24V to 36V. The device features a typical initial accuracy of 0.4% at 25°C and maintains stability across temperatures from -40°C to +85°C. Key electrical characteristics include a low dynamic output impedance of 0.22Ω and a cathode current range of 1µA to 100mA. It utilizes a SOT-23 package, making it suitable for space-constrained designs.

Feature Summary

• Programmable output voltage via external resistor divider
• Low dynamic output impedance for stable regulation
• Wide operating temperature range ensuring reliability in harsh environments
• Low power consumption suitable for battery-operated devices

Applications

• Precision voltage references in portable electronics
• Feedback elements in switching power supplies
• Comparator circuits requiring stable reference voltages
• Battery management systems for accurate voltage monitoring

Procurement Notes

Verify the specific suffix 'CLPM' corresponds to the SOT-23 package and commercial temperature grade (-40°C to +85°C) as per the official datasheet. Ensure compatibility with your PCB footprint and thermal requirements. Confirm that the required cathode current falls within the 1µA to 100mA operational range for optimal performance. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a compact, low-power shunt reference is needed for feedback loops or voltage monitoring. The TLV431CLPM is ideal for designs where board space is limited due to its SOT-23 packaging. Consider the 0.4% initial accuracy if tight tolerance is critical. Evaluate the operating temperature range to ensure it meets environmental specifications. Compare against other shunt references if higher precision or different package types are required.

Part Context

The TLV431 series is a widely used family of programmable shunt voltage references known for their versatility and cost-effectiveness. The CLPM variant specifically denotes the commercial temperature grade and SOT-23 surface-mount package. This series serves as a drop-in replacement for many Zener diodes in regulation applications, offering superior performance in terms of noise, impedance, and adjustability. It is commonly integrated into power management ICs and discrete regulator circuits.

Replacement Considerations

Direct substitutes include the TLV431ACLP and TLV431BCP for similar performance with potentially tighter tolerances. For industrial temperature grades, consider the TLV431QML or variants with 'I' suffixes. Verify pinout compatibility and package dimensions before substitution. Ensure the alternative part meets the same voltage and current specifications.