Texas Instruments LP2950-33LPE3 Fixed LDO Voltage Regulator, 3.3V 100mA, TO-92

The Texas Instruments LP2950-33LPE3 is a precision, low-dropout (LDO) voltage regulator engineered for exceptional stability and accuracy. Designed with bipolar technology, it accommodates a wide input supply-voltage range from 3.7V up to 30V, making it incredibly versatile for various power supply designs. Its primary function is to deliver a tightly regulated 3.3V output with a maximum current of 100mA, featuring an impressively low dropout voltage of just 380mV. This regulator is meticulously designed to minimise all error contributions, resulting in outstanding performance.

A key strength of the LP2950-33LPE3 is its precision. It offers a very tight output tolerance, an extremely low output voltage temperature coefficient, and excellent line and load regulation. This high level of accuracy allows the device to be utilised not only as a reliable power regulator but also as a stable, low-power voltage reference in sensitive analogue circuits. Remote sensing capability further enhances its regulation performance by compensating for voltage drops in PCB traces.

The device is packed with features that ensure robust and safe operation. These include low quiescent current for improved efficiency in battery-powered applications, and built-in current and thermal limiting to protect both the regulator and the load circuit from damage. It is also stable when used with low Equivalent Series Resistance (ESR) capacitors, simplifying external component selection and board design.

Housed in a standard TO-92-3 through-hole package, it is easy to prototype with and suitable for a wide operating temperature range from -40°C to 125°C. This combination of precision, a wide input range, and protective features makes the LP2950-33LPE3 an ideal choice for demanding electronic applications where clean, stable voltage is critical.