LP2981A-30DBVT

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

The LP2981A-30DBVT is a fixed-output low-dropout linear voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 3.0 V with a maximum output current capability of 100 mA. The device supports an input voltage range up to 16 V and operates within a junction temperature range of -40°C to +125°C. Key electrical specifications include a typical quiescent current of 95 µA, a maximum dropout voltage of 0.37 V at full load, and a line regulation of 0.014 %/V. It features integrated protection mechanisms including overcurrent limiting, thermal shutdown, and short-circuit protection.

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

• Integrated enable control pin for power management
• Built-in overcurrent, thermal shutdown, and short-circuit protection
• Low quiescent current consumption for battery efficiency
• Capable of maintaining regulation with minimal input-to-output voltage differential

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

• Portable battery-powered equipment requiring efficient voltage regulation
• Cellular phones and pagers
• Modems and cordless telephones
• PDA systems and handheld instruments

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

Verify the specific suffix DBVT to confirm the SOT-23-5 package type and tape-and-reel or cut-tape availability. Confirm RoHS compliance status as manufacturing processes may evolve. Check for obsolescence notices or PCN documentation regarding assembly site changes or material substitutions before finalizing procurement plans.

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

Select this component when a stable 3.0 V rail is required from a higher voltage source with limited space constraints. Ensure the input voltage does not exceed the 16 V absolute maximum rating. Verify that the expected load current remains within the 100 mA limit to maintain specified dropout performance and thermal stability under worst-case ambient conditions.

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

This part belongs to the LP2981 family of micropower LDO regulators designed for portable applications. It shares architectural similarities with other variants in the series but is distinguished by its specific 3.0 V fixed output voltage setting. The device utilizes Texas Instruments' proprietary low-dropout technology to maximize battery life in mobile devices.

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

LP2981-30DBVT

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

What is the maximum input voltage for the LP2981A-30DBVT?

The maximum input voltage supported by this regulator is 16 V.

Does the LP2981A-30DBVT include an enable feature?

Yes, the device includes an enable pin that allows the user to shut down the regulator to minimize quiescent current.