LP2951ACM-3.3

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

The LP2951ACM-3.3 is a micropower low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed 3.3 V output with a maximum load current of 100 mA. The device operates from an input voltage range up to 30 V and maintains regulation with a typical dropout voltage of 50 mV at 100 µA and 380 mV at 100 mA. Quiescent bias current is typically 75 µA. It features internal current limiting and thermal shutdown protection, requires only a 1.0 µF output capacitor for stability, and includes an error flag output to signal out-of-regulation conditions.

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

• Micropower operation with extremely low quiescent bias current
• Low input-to-output voltage differential across load ranges
• Integrated error flag output for monitoring regulation status
• Internal current and thermal limiting protection mechanisms

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

• Battery-powered systems requiring low standby current
• Portable equipment utilizing 3.3 V logic levels
• General-purpose linear regulation in space-constrained designs

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

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure the component matches the required automotive or industrial specifications if applicable. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through the latest datasheet revision.

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

Select this component when a stable 3.3 V supply is needed with minimal power consumption. It is suitable for applications where input voltage exceeds 3.3 V but remains within the 30 V limit. Consider the 100 mA output capability and the requirement for a ceramic output capacitor. Evaluate the error flag utility for system monitoring needs.

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

This device belongs to the LP2950/LP2951 family of micropower voltage regulators designed for maintaining proper regulation with minimal voltage differential. The LP2951 variant specifically adds an error output feature compared to the LP2950. These regulators are widely used in portable electronics and battery-operated devices due to their efficiency and small footprint.

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

LP2951ACM/NOPB: Adjustable output version of the same package and series. LP2951ACDM-3.3RG: Fixed 3.3 V output from onsemi in a similar SOIC-8 package.