LM2931AMX-5.0

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

The LM2931AMX-5.0 is a fixed-output low-dropout (LDO) voltage regulator from the LM2931-N series, manufactured by Texas Instruments. It provides a stable 5.0 V output with a maximum load current of 100 mA. The device operates within an input voltage range of 4 V to 26 V and maintains regulation with a typical dropout voltage of 90 mV at 10 mA load. It features a low quiescent current of approximately 2.5 mA at full load. The component is housed in a SOIC-8 surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• Integrated load dump protection capable of withstanding transients up to 60 V to safeguard internal circuitry and loads during automotive electrical disturbances.
• Reverse transient protection allows safe operation against reverse battery connections or negative transients down to -50 V.
• Includes internal current limiting and thermal shutdown mechanisms to prevent damage under overload or excessive heat conditions.

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

• Automotive electronic systems requiring robust protection against load dump and reverse polarity events
• Battery-powered devices utilizing low quiescent current for extended operational life
• Low-noise power supply stages in sensitive analog circuits

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

Verify the specific suffix configuration against the manufacturer datasheet to confirm pinout compatibility and exact electrical tolerances. Ensure the selected variant matches the required thermal management strategy for the SOIC-8 package. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the ordering part number with official Texas Instruments documentation to avoid substitution errors.

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

Select this regulator when a fixed 5 V output is required with high reliability in automotive environments. The built-in load dump and reverse transient protections eliminate the need for external protective components in many designs. Consider the thermal performance of the SOIC-8 package relative to the expected ambient temperature and load current to ensure junction temperatures remain within safe limits.

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

The LM2931 series comprises very low dropout regulators designed for applications demanding high efficiency and noise immunity. This specific model belongs to the LM2931-N series, which offers enhanced specifications compared to earlier iterations. The family is widely recognized for its durability in harsh electrical environments, particularly where input voltage stability cannot be guaranteed.

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

The LM2931AMX-5.0/NOPB is a direct equivalent offering lead-free construction while maintaining identical electrical characteristics and pinout compatibility.