STMicroelectronics

LDS3985M25R  

Linear & Switching Voltage Regulators

LDS3985M25R Description

The LDS3985M25R is a high-performance linear regulator designed by STMicroelectronics, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is specifically designed to deliver a fixed output voltage of 2.5V with a maximum output current of 300mA. The device is housed in a compact SOT23-5 package, making it suitable for space-constrained applications.

The LDS3985M25R operates with a maximum input voltage of 6V and features a low dropout voltage of 0.25V at 300mA, ensuring efficient power conversion even at low input-to-output voltage differentials. The regulator's quiescent current is a mere 150 µA, contributing to its high efficiency and suitability for battery-powered devices. Additionally, the regulator's supply current is limited to 300 µA, further enhancing its power efficiency.

The device is equipped with a shutdown control feature, allowing for power-saving modes and dynamic power management. It also includes robust protection features such as over-current and over-temperature protection, ensuring reliable operation under various conditions. The regulator's Power Supply Rejection Ratio (PSRR) ranges from 55dB to 50dB across frequencies from 1kHz to 10kHz, providing excellent noise suppression and stable output voltage.

The LDS3985M25R is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It has a moisture sensitivity level (MSL) of 1, indicating it is suitable for unlimited exposure to ambient conditions, making it ideal for a wide range of manufacturing processes. The device is available in a surface-mount package, facilitating easy integration into modern electronic designs.

LDS3985M25R Features

• Fixed Output Voltage: 2.5V, ensuring stable power supply for sensitive electronic components.
• High Output Current Capability: Up to 300mA, suitable for driving various loads.
• Low Dropout Voltage: 0.25V @ 300mA, enabling efficient operation at low input-to-output voltage differentials.
• Low Quiescent Current: 150 µA, minimizing power consumption in standby modes.
• Control Features: Shutdown functionality for dynamic power management.
• Protection Features: Over-current and over-temperature protection for reliable operation.
• High PSRR: 55dB to 50dB across 1kHz to 10kHz, ensuring low noise and stable output.
• Compliance: REACH unaffected, RoHS3 compliant, and MSL 1 rated for unlimited exposure.
• Packaging: Surface-mount SOT23-5 package, ideal for compact designs.

LDS3985M25R Applications

The LDS3985M25R is ideal for a variety of applications that require a stable and efficient power supply. Its low dropout voltage and high efficiency make it particularly suitable for battery-powered devices where input voltage can vary significantly. The regulator's compact size and surface-mount package also make it ideal for applications with space constraints.

Specific use cases include:

• Portable Electronics: Smartphones, tablets, and other mobile devices that require efficient power management.
• Wearable Devices: Fitness trackers, smartwatches, and other wearables that demand low power consumption and small form factors.
• IoT Devices: Sensors, actuators, and other IoT components that need stable power supply and low noise.
• Medical Devices: Portable medical equipment and diagnostic tools that require reliable and efficient power solutions.
• Consumer Electronics: Portable audio devices, cameras, and other consumer products that benefit from high efficiency and low noise.

Conclusion of LDS3985M25R

The LDS3985M25R from STMicroelectronics is a versatile and efficient linear regulator that offers a combination of high performance, low power consumption, and robust protection features. Its fixed 2.5V output and low dropout voltage make it an excellent choice for applications requiring stable power supply and efficient power conversion. The regulator's compact SOT23-5 package and surface-mount design further enhance its suitability for modern electronic designs. With its compliance to environmental and safety standards, the LDS3985M25R is a reliable and future-proof solution for a wide range of power management needs.

LDS3985M25R Documents

Download datasheets and manufacturer documentation for LDS3985M25R

PCN Assembly/Origin :

New Lead-Frame 01/Sep/2020      

Datasheets :

LDS3985xx      

PCN Packaging :

Moisture Barrier Bag 09/May/2016      

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