LM2931Z-5.0/NOPB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LM2931Z-5.0/NOPB is a fixed-output low-dropout linear voltage regulator manufactured by Texas Instruments, delivering a stable 5.0 V output with a maximum current capacity of 100 mA. It operates within an input voltage range of 4 V to 26 V and features a typical dropout voltage of 300 mV at full load. The device incorporates internal thermal overload protection and current limiting to ensure reliability under fault conditions. Designed for surface-mount applications, it utilizes a TO-263 (D2PAK) package configuration. The regulator maintains operation across an extended industrial temperature range from -40°C to +85°C, providing efficient power management for battery-powered and automotive systems requiring low noise and high stability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Fixed 5.0 V output voltage with 100 mA continuous current capability
• Integrated thermal shutdown and current limit protection circuits
• Low quiescent current consumption suitable for energy-efficient designs
• Robust transient protection against reverse battery and load dump events

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices
• Automotive electronics and control modules
• Local regulation in distributed power architectures
• Low-noise analog circuit power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'Z' indicates the TO-263 package variant when sourcing. Confirm that the 'NOPB' designation ensures compliance with RoHS standards and absence of lead-based materials. Cross-reference the manufacturer's latest datasheet to validate pinout compatibility and thermal pad requirements for PCB layout. Ensure the supply chain provides original components to avoid counterfeit risks associated with legacy PMIC families.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 5 V rail is required with moderate current demands up to 100 mA. It is appropriate for designs prioritizing simplicity over adjustable output flexibility. Consider the thermal performance of the TO-263 package if significant power dissipation is expected. Compare against adjustable variants like the LM2931CS if voltage flexibility is needed instead of a fixed output.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The LM2931 series represents a family of very low dropout regulators designed for low-power and low-noise applications. The LM2931Z-5.0/NOPB specifically denotes the fixed 5.0 V version in a surface-mount D2PAK package. This part belongs to the broader PMIC category, offering high rejection ratios and stability without external compensation capacitors in many configurations. It serves as a robust solution for replacing older linear regulator technologies in modern compact electronics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct replacements include other LM2931 variants with identical electrical characteristics but different packages or output voltages, such as LM2931AX-5.0. Verify thermal resistance values and pinout compatibility before substituting with generic LDOs. Ensure any alternative supports the same 26 V maximum input rating and 100 mA output current.