LP2951ACM-3.0

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

The LP2951ACM-3.0 is a micropower voltage regulator from the LP295x-N series, manufactured by Texas Instruments. It provides a fixed 3-V output with an input voltage range of 2.3 V to 30 V. The device ensures a 100-mA output current while maintaining extremely low quiescent current and dropout voltage. It features high accuracy output voltage regulation, tight load and line regulation, and very low temperature coefficients. The component includes internal protection against current limiting and thermal shutdown.

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

• Logic-controlled electronic shutdown for enhanced battery life
• Error flag output warns of output dropout conditions
• High accuracy output voltage with tight initial tolerance
• Stable operation with low-ESR output capacitors

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

• Battery-powered regulators
• Regulator with undervoltage shutdown
• Snap-ON/Snap-OFF Regulator
• High-efficiency linear regulator

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

Verify the specific suffix 'CM' indicates the SOIC-8 package variant when sourcing replacements or equivalents. Confirm that the '-3.0' designation strictly corresponds to the 3-V fixed output version required for your circuit design. Ensure compatibility with the LP2951-N series documentation regarding pinout and electrical characteristics during integration.

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

Select this component for applications requiring precise 3-V regulation from varying input sources up to 30 V. It is suitable for systems needing low quiescent current to extend battery life. The inclusion of a shutdown pin allows for system-level power management. Consider the SOIC-8 package size constraints and thermal dissipation requirements for your PCB layout.

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

This part belongs to the LP295x-N series of adjustable micropower voltage regulators. The LP2951-N variants distinguish themselves from the LP2950-N by offering additional control pins, specifically the SHUTDOWN and ERROR outputs. This series is designed for high accuracy and stability in portable and battery-operated electronics.

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

LP2951ACM/NOPB

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

What is the function of the ERROR pin on the LP2951ACM-3.0?

The ERROR pin serves as an open-drain output that goes logic low when the output voltage drops out of regulation by approximately 5%, typically indicating falling input batteries.

How does the SHUTDOWN pin operate?

Pulling the SHUTDOWN pin to a high level (logic high) turns off the regulator, significantly reducing quiescent current consumption to enhance battery life in standby modes.