LP2951CSD/NOPB Description

The LP2951CSD/NOPB is a micropower voltage regulator with very low quiescent current(75 µA typical) and very low dropout voltage (typically 40 mV at light loads and 380 mV at 100 mA). It is ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life. Careful design of the LP2951CSD/NOPB has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical), and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

LP2951CSD/NOPB Features

Input Voltage Range: 2.3 V to 30 V

5-V, 3-V, and 3.3-V Output Voltage Versions Available

High Accuracy Output Voltage

Ensured 100-mA Output Current

Extremely Low Quiescent Current

Low Dropout Voltage

Extremely Tight Load and Line Regulation

Very Low-Temperature Coefficient

Use as Regulator or Reference

Needs Minimum Capacitance for Stability

Current and Thermal Limiting

Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)

LP2951CSD/NOPB Applications

High-Efficiency Linear Regulator

Regulator with Undervoltage Shutdown

Low Dropout Battery-powered Regulator

Snap-ON/Snap-OFF Regulator