LP2951-33QDRGRQ1

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

The LP2951-33QDRGRQ1 is a micropower low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed 3.3V output with a maximum load current of 100mA. The device supports an input voltage range from 2V to 30V and operates within a junction temperature range of -40°C to +125°C. It features a typical quiescent current of 50µA and a typical dropout voltage of 340mV at full load. The component is housed in an 8-WSON package measuring 3mm x 3mm.

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

• Provides automotive-grade reliability with AEC-Q100 qualification for temperatures up to Grade 1 (-40°C to +125°C).
• Includes integrated error flag output to monitor feedback pin voltage and indicate output status.
• Offers wide stability with ceramic output capacitors ranging from 1µF to 100µF.
• Features shutdown input and error output capabilities for system power sequencing.

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

• HEV/EV battery management systems (BMS)
• HEV/EV motor control inverters
• Automotive infotainment systems
• Instrument clusters

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

Verify the specific suffix QDRGRQ1 against the manufacturer's official datasheet to confirm the fixed 3.3V output, WSON-8 package, and automotive grade classification. Ensure compatibility with required thermal dissipation and PCB layout guidelines for the 8-WSON footprint. Confirm RoHS compliance and moisture sensitivity level requirements for your assembly process.

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

Select this component when a stable 3.3V rail is required in automotive environments with high input voltages up to 30V. It is suitable for applications needing low quiescent current and precise output regulation under varying load conditions. Consider the 8-WSON package size constraints and thermal performance relative to the expected ambient temperature and load current.

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

This part belongs to the LP2951-Q1 family of micropower LDO regulators designed specifically for automotive electronics. The series offers both adjustable and fixed output options, providing flexibility for various voltage rails. The Q1 designation indicates adherence to automotive quality standards, ensuring robustness against the electrical noise and temperature extremes typical in vehicle powertrains and body electronics.

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

LP2951-33DRGRQ1