STMicroelectronics Voltage Regulator 5.5V 250mA Low-Dropout SOT-23 5-Pin LDLN025M15R

STMicroelectronics LDLN025M15R is a low-dropout (LDO) voltage regulator designed to deliver up to 250 mA output current with ultra low noise suitable for sensitive electronic circuits. It supports a wide input voltage range from 1.5 V to 5.5 V, making it versatile for battery-powered and portable applications that demand stable and clean power supply.

The device operates with an exceptionally low quiescent current of 12 μA at no-load, maximizing battery lifetime in standby conditions. Its typical dropout voltage is only 120 mV at full load, ensuring efficient voltage regulation under varying load conditions. The output voltage accuracy maintains tight regulation within ±2% over line, load, and temperature changes, supporting precise power requirements.

Additional features include logic-controlled electronic shutdown that disables the output when needed, an output discharge function to quickly discharge output capacitors, and an internal soft-start mechanism to prevent inrush current damage on powering up. The LDLN025M15R incorporates integrated overcurrent and thermal shutdown protections to enhance circuit reliability and safety.

The device is housed in a compact SOT-23 5-pin surface mount package, measuring 2.95 mm in length, 1.6 mm in width, and 1.3 mm in height, ideal for space-constrained PCB designs. It can operate effectively over an extended temperature range from -40 °C up to 125 °C, suitable for industrial and automotive environments where thermal variations are common.

This Voltage Regulator provides ultra-low output noise of 6.5 μVRMS and high power supply rejection ratio (PSRR), delivering a very clean and stable output voltage necessary for ultra-sensitive analog and RF circuits. It supports output voltage options from 1 V to 5 V in 50 mV increments, allowing adaptation to various supply voltage needs.

The STMicroelectronics LDLN025M15R is well suited for industrial, automotive, portable electronics, communication, and instrumentation applications requiring efficient, low noise power regulation in a miniature surface mount package.

The regulator operates with an input voltage range from 1.5 V to 5.5 V. Typical dropout voltage at 250 mA load is 120 mV, ensuring stable output. It features a very low quiescent current of only 12 μA at no-load extending battery life.

Output voltage accuracy is maintained within 2% across line, load and temperature variations. Includes logic-controlled electronic shutdown and output discharge feature for flexible control. Internal soft-start protects against inrush current during power-up.

Built-in overcurrent and thermal protections enhance device reliability. The device is suitable for operating temperature range from -40 °C to +125 °C. Compact SOT-23 5-pin surface mount package measures 2.95 mm x 1.6 mm x 1.3 mm.

Ideal for ultra-sensitive, low noise power applications requiring clean regulated voltage. Explore more voltage regulation solutions and power management ICs in our Electronics category on EnvMart.