Texas Instruments LP2950CZ-5.0 Fixed LDO Voltage Regulator, 5V/100mA, TO-92

The Texas Instruments LP2950CZ-5.0/NOPB is a 5V fixed output low-dropout (LDO) linear voltage regulator, engineered for precision and efficiency. It features a remarkably low quiescent current of just 75µA typical and an impressively low dropout voltage—typically 40mV at light loads and 380mV at the full 100mA output. This combination ensures maximum power is delivered to your load, significantly prolonging battery life in portable applications as the quiescent current increases only minimally during dropout conditions.

This device is designed with meticulous attention to accuracy, featuring a tight initial output voltage tolerance of 0.5% typical. It delivers extremely good load and line regulation (0.05% typical) and exhibits a very low output voltage temperature coefficient, making it an excellent choice not only as a regulator but also as a low-power voltage reference for sensitive circuits.

Key Features & Functionality

The regulator includes an error flag output that provides a warning signal when the output voltage falls below a set threshold, a common indicator of depleting input batteries; this output can be utilised to generate a power-on reset signal. A logic-compatible shutdown input allows the regulator to be switched on and off electronically, enabling advanced power management.

Engineered for robustness and stability, it requires only a minimum amount of capacitance for stable operation and remains stable with low-ESR (Equivalent Series Resistance) output capacitors ranging from 10mΩ to 6Ω. Built-in current and thermal limiting protect the device and your circuitry under fault conditions. It is also a green product, manufactured without antimony or bromine (no Sb/Br).

Specifications at a Glance

• Fixed Output Voltage: 5V
• Maximum Output Current: 100mA
• Maximum Input Voltage: 30V
• Typical Dropout Voltage: 380mV @ 100mA
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