The Texas Instruments LP2951-N are micro power voltage regulators with very low quiescent current (75 μA typical) and very low dropout voltage (typical 40 mV alight loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

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)
LP2951-N Versions Only:
Error Flag Warns of Output Dropout
Logic-Controlled Electronic Shutdown
Output Programmable From 1.24 V to 29 V

LDO (Low Dropout) Linear Voltage Regulators, Texas Instruments

A range of Texas Instruments Low Dropout (LDO) Linear Voltage regulators. LDO voltage regulators are able to operate with a small input-output differential making them suitable for a variety of applications where conventional regulators would be unsatisfactory. The latest generation of LDO regulators offers low quiescent current levels and reduced output noise together with excellent line voltage regulation and high PSRR.