STMicroelectronics Voltage Regulator 5.5V 300mA Low Dropout SOT-23 5-Pin LDK130M33RY

STMicroelectronics LDK130M33RY voltage regulator is a high-performance low dropout (LDO) regulator designed for precise power management in portable and battery-operated devices. It delivers a maximum output current of 300 mA from an input voltage range as low as 1.9 V up to 5.5 V with an exceptionally low dropout voltage of approximately 100 mV, ensuring efficient power conversion and longer battery life.

The device is housed in a compact 5-pin SOT-23 surface mount package with a small footprint of 2.95 mm length, 1.6 mm width, and 1.3 mm height, optimizing PCB space usage. Its low quiescent current of just 120μA makes it ideal for low power consumption applications where efficient energy use is critical.

The LDK130M33RY regulator features a logic-controlled enable input that allows the regulator to enter a shutdown mode, reducing the current consumption to less than 1 μA, which is essential for extending battery life in portable electronics. The output voltage tolerance is tightly controlled to ±2.0% at 25 °C, ensuring stable and reliable voltage supply to sensitive components.

The regulator is stabilized with a ceramic capacitor on the output, enhancing noise performance and operational stability. Internal current limit and thermal protection circuits safeguard the device and the overall system from damage due to overload or overheating.

With an operating temperature range spanning from -40 °C to 125 °C, the LDK130M33RY is qualified to meet the rigorous automotive standard AEC-Q100, making it suitable for use in automotive and harsh environment applications as well as general industrial and consumer electronics.

Operates over an input voltage range from 1.9V to 5.5V. Typical dropout voltage of approximately 100mV at 300mA output. Low quiescent current of 120μA ideal for battery-powered devices. Logic-controlled shutdown reduces current below 1 μA.

Compact SOT-23 5-pin package for space-saving PCB layouts. ±2.0% output voltage tolerance at 25 °C for consistent performance. Internal current limiting and thermal protection for device safety. Automotive standard AEC-Q100 qualified for demanding environments.

Compatible with ceramic output capacitors for stability and low noise.

This voltage regulator is widely used in industrial electronics, automotive systems, portable battery-powered devices, and consumer electronics where reliable low voltage power supply and energy efficiency are essential.

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