STMicroelectronics Voltage Regulator 5.5V Low-Dropout 250mA DFN 4-Pin LDLN025PU50R

STMicroelectronics LDLN025PU50R is a high-performance, low-dropout (LDO) voltage regulator designed for sensitive electronic applications requiring a stable 5.5V output from input voltages between 1.5V to 5.5V. Packaged in a space-saving DFN 4-pin surface mount device, its compact 1.05mm by 1.05mm footprint and 350μm height make it ideal for densely packed PCBs in modern electronics.

With a maximum load current of 250 mA and a typical dropout voltage of 120 mV at full load, the LDLN025PU50R ensures efficient power regulation with minimal power loss. Its ultra-low quiescent current of 12 μA at no load maximizes battery life in portable and standby applications. Logic control enables electronic shutdown mode that reduces current consumption to less than 1 μA, further conserving power.

Designed with advanced protection features, it integrates thermal shutdown and short-circuit protection to safeguard connected circuitry against fault conditions. The regulator delivers exceptionally low output noise and high power supply rejection ratio (PSRR), making it suitable for ultra-sensitive noise-critical environments.

Stability is assured with ceramic output capacitors, enabling reliable operation across a wide temperature range up to 125°C. This makes the LDLN025PU50R well suited for industrial, consumer electronics, and communication devices where precise voltage regulation and energy efficiency are paramount.

Operates from 1.5 V to 5.5 V input voltage range. Supports output currents up to 250 mA with low dropout voltage. Extremely low quiescent current extends battery life in portable devices. Logic-controlled shutdown allows ultra-low current standby mode.

Internal short-circuit and thermal protections ensure reliability. Stable with ceramic output capacitors for noise-sensitive applications. Compact DFN 4-pin surface mount package for space-efficient designs. Maximum operating temperature of 125°C for robust performance.

This voltage regulator from STMicroelectronics is ideal for industrial electronics, IoT devices, battery-powered instruments, and other applications where clean and efficient power supply management is critical. For users designing PCBs, the compact DFN package facilitates miniaturization without compromising performance.

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