LP2951CMX/NOPB | Texas Instruments

Low-Dropout Voltage Regulator, LP2951CMX/NOPB, Texas Instruments

The LP2951CMX/NOPB is a micropower voltage regulator with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). It is ideally suited for use in a battery-powered system. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life. Careful design of the LP2951CMX/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 device useful as a low-power voltage reference. One such feature is an error flag output which warns of a low output voltage, often due to a falling battery on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off.

Features

• High Accuracy Output Voltage
• Extremely Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load and Line Regulation
• Very Low Temperature Coefficient
• Needs Minimum Capacitance for Stability
• Current and Thermal Limiting

Applications

• High-Efficiency Linear Regulator
• Regulator with Undervoltage Shutdown
• Low Dropout Battery-powered Regulator
• Snap-ON/Snap-OFF Regulator