STMicroelectronics

LDLN050PU33RY

LDLN050PU33RY Description

The LDLN050PU33RY is a high-performance linear regulator IC designed by STMicroelectronics, a leading manufacturer in the power management sector. This device is part of the Power Management Integrated Circuits (PMIC) category and offers a fixed output voltage of 3.3V with a maximum output current of 500mA. It is designed for surface mount applications, specifically with a wettable flank mounting type, making it suitable for automated assembly processes. The regulator is housed in an 8DFN package, which is available in tape and reel format (Tape & Reel, TR), facilitating efficient manufacturing and handling.

The LDLN050PU33RY is characterized by its low dropout voltage of 0.5V at 500mA, ensuring efficient power conversion even at low input voltages. This feature is particularly beneficial in applications where the input voltage may vary or be close to the output voltage. The regulator also boasts a low quiescent current of 65 µA, contributing to high efficiency and reduced power consumption, especially in standby or low-load conditions. Additionally, the device offers a maximum supply current of 120 µA, further enhancing its energy efficiency.

LDLN050PU33RY Features

• Output Type: Fixed output voltage of 3.3V, ensuring stable power supply to connected devices.
• Input Voltage Range: Up to 6.5V, providing flexibility in power source selection.
• Output Current: Capable of delivering up to 500mA, suitable for a wide range of low to medium power applications.
• Low Dropout Voltage: 0.5V at 500mA, enabling efficient operation even with minimal voltage headroom.
• Low Quiescent Current: 65 µA, minimizing power loss during operation and standby.
• Control Features: Includes an enable function, allowing dynamic control of the regulator's operation.
• Protection Features: Over-current protection, over-temperature protection, and under-voltage lockout (UVLO) ensure robustness and reliability in various operating conditions.
• Power Supply Rejection Ratio (PSRR): Ranging from 65dB at 100Hz to 38dB at 100kHz, providing excellent noise suppression and stable output voltage.
• Mounting Type: Surface mount with wettable flank, ideal for automated assembly processes.
• Package: 8DFN in tape and reel format, facilitating efficient handling and manufacturing.

LDLN050PU33RY Applications

The LDLN050PU33RY is well-suited for a variety of applications that require a stable and efficient power supply. Its low dropout voltage and low quiescent current make it ideal for battery-powered devices, portable electronics, and IoT devices where power efficiency is critical. The regulator's fixed 3.3V output and 500mA current capability make it suitable for powering microcontrollers, sensors, and other low-power peripherals.

Specific use cases include:

• Battery-Powered Devices: Ideal for applications where the input voltage may vary, such as in portable electronics and wearable devices.
• IoT Devices: Provides a stable power supply for sensors and communication modules, ensuring reliable operation.
• Microcontroller Power Supply: Suitable for powering microcontrollers and other low-power embedded systems.
• Point-of-Load (PoL) Applications: Can be used in systems where multiple low-power devices need to be powered efficiently.

Conclusion of LDLN050PU33RY

The LDLN050PU33RY from STMicroelectronics is a versatile and efficient linear regulator designed for a wide range of power management applications. Its low dropout voltage, low quiescent current, and robust protection features make it an excellent choice for battery-powered and low-power applications. The device's fixed 3.3V output and 500mA current capability ensure stable and reliable power delivery, while its surface mount package and enable function provide flexibility in design and operation. Whether used in portable electronics, IoT devices, or microcontroller power supplies, the LDLN050PU33RY offers a reliable and efficient power solution.