STMicroelectronics

LD3980PU135R

LD3980PU135R Description

The LD3980PU135R is a linear regulator designed for high performance and reliability in power management applications. Manufactured by STMicroelectronics, this regulator is part of the Power Management Integrated Circuits (PMIC) category. It features a fixed output voltage of 1.35V and is capable of delivering a maximum output current of 300mA. The regulator operates with a maximum input voltage of 3.6V, making it suitable for low-voltage applications.

The LD3980PU135R is designed with a single regulator and a positive output configuration. It boasts a low quiescent current of 110 µA and a supply current of up to 130 µA, ensuring efficient power usage. The regulator also features a high Power Supply Rejection Ratio (PSRR) of 60dB to 58dB across a frequency range of 1kHz to 10kHz, which helps in maintaining stable output voltage under varying input conditions.

LD3980PU135R Features

• Fixed Output Voltage: The LD3980PU135R provides a stable 1.35V output voltage, ideal for applications requiring a consistent power supply.
• Low Quiescent Current: With a quiescent current of only 110 µA, the regulator minimizes power consumption, making it suitable for battery-powered devices.
• High PSRR: The regulator offers a PSRR of 60dB to 58dB, ensuring high performance in noisy environments.
• Enable Control Feature: The enable control feature allows for easy on/off control, providing flexibility in system design.
• Protection Features: Over-current and over-temperature protection features ensure the regulator's longevity and reliability.
• Surface Mount Packaging: The surface mount technology (SMT) allows for easy integration into compact designs.
• Moisture Sensitivity Level: MSL 1 (unlimited) ensures the regulator can withstand various environmental conditions without degradation.
• Compliance: The LD3980PU135R is REACH unaffected and RoHS3 compliant, meeting international standards for environmental safety.

LD3980PU135R Applications

The LD3980PU135R is well-suited for a variety of applications that require a stable and efficient power supply. Some specific use cases include:

• Battery-Powered Devices: The low quiescent current and fixed output voltage make it ideal for portable devices where battery life is a critical factor.
• Low-Voltage Systems: With a maximum input voltage of 3.6V, it is perfect for systems operating at low voltages.
• Consumer Electronics: The regulator's compact size and high performance make it suitable for consumer electronics that require reliable power management.
• Industrial Applications: The over-current and over-temperature protection features ensure robust performance in industrial environments.

Conclusion of LD3980PU135R

The LD3980PU135R from STMicroelectronics is a high-performance linear regulator designed to meet the demands of modern power management applications. Its fixed output voltage, low quiescent current, and high PSRR make it a reliable choice for low-voltage and battery-powered devices. The enable control feature and protection mechanisms offer additional flexibility and reliability. Despite being marked as obsolete, the LD3980PU135R remains a viable option for applications requiring a stable and efficient power supply, especially in environments where low power consumption and high performance are paramount.