STMicroelectronics

LD39030SJ28R  

Linear & Switching Voltage Regulators

LD39030SJ28R Description

The LD39030SJ28R is a linear regulator IC designed by STMicroelectronics, offering a fixed output voltage of 2.8V and a maximum output current of 300mA. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a 4-FlipChip package, making it suitable for surface mount applications. Despite its obsolete product status, the LD39030SJ28R remains a reliable choice for applications requiring a low dropout voltage and high power supply rejection ratio (PSRR).

LD39030SJ28R Features

• Output Type: Fixed at 2.8V, ensuring stable power supply to connected devices.
• Input Voltage Range: Operates efficiently with a maximum input voltage of 5.5V, providing flexibility in power source selection.
• Output Current: Delivers a consistent 300mA, suitable for a variety of low to medium power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.3V at 300mA, the LD39030SJ28R maintains high efficiency even at low input-to-output voltage differences.
• High PSRR: Achieves a power supply rejection ratio of 62dB across the 1kHz to 10kHz frequency range, minimizing noise and ripple in the output voltage.
• Low Quiescent Current: Consumes only 50 µA in quiescent state and 85 µA in supply current, contributing to energy efficiency.
• Control and Protection Features: Includes an enable control feature and robust protection mechanisms such as over-current and over-temperature protection, along with soft start functionality.
• Compliance and Packaging: The LD39030SJ28R is REACH unaffected and ROHS3 compliant, ensuring environmental safety. It is available in a Tape & Reel (TR) package, facilitating easy handling and integration into automated assembly processes.

LD39030SJ28R Applications

The LD39030SJ28R is ideal for applications requiring a stable and efficient power supply with minimal noise and ripple. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices, portable electronics, and systems where input voltage fluctuations are common. Specific use cases include:

• Battery-Powered Devices: Provides a reliable power source for devices such as smartphones, tablets, and wearable technology.
• Portable Electronics: Ensures stable power delivery in applications like digital cameras, MP3 players, and portable gaming consoles.
• Industrial Control Systems: Offers a compact and efficient solution for powering sensors, microcontrollers, and other low-power components in industrial environments.
• Medical Devices: Suitable for powering low-power medical equipment where stability and reliability are critical.

Conclusion of LD39030SJ28R

The LD39030SJ28R from STMicroelectronics stands out as a robust and efficient linear regulator, offering a fixed 2.8V output and a maximum output current of 300mA. Its low dropout voltage, high PSRR, and low quiescent current make it an excellent choice for applications requiring stable power delivery with minimal noise. Despite its obsolete status, the LD39030SJ28R remains a reliable option for designers seeking a compact, efficient, and compliant power management solution.

LD39030SJ28R Documents

Download datasheets and manufacturer documentation for LD39030SJ28R

Datasheets :

LD39030SJ      

PCN Obsolescence/ EOL :

EOL- 11/May/2023      

HTML Datasheet :

LD39030SJ