STMicroelectronics

LD39115J28R

The LD39115J28R is a high-efficiency step-down (buck) converter from STMicroelectronics. It is designed to provide a stable output voltage from a wide range of input voltages, making it suitable for a variety of applications.

Description:

The LD39115J28R is a synchronous buck converter that uses a constant on-time control scheme to regulate the output voltage. It has a wide input voltage range of 4V to 28V and can deliver an output current of up to 2A. The converter operates with a switching frequency of up to 1.5MHz, allowing for smaller external components and a more compact design.

Features:

Some of the key features of the LD39115J28R include:

1. High efficiency: The LD39115J28R has a high efficiency of up to 93%, which helps to minimize power loss and reduce thermal dissipation.
2. Wide input voltage range: The converter can accept a wide range of input voltages, from 4V to 28V, making it suitable for use in various applications with different power sources.
3. Programmable output voltage: The output voltage can be programmed using an external resistor divider, allowing for flexibility in output voltage selection.
4. Protection features: The LD39115J28R includes various protection features, such as over-current protection, over-voltage protection, and thermal shutdown, to ensure the safety and reliability of the system.
5. Small form factor: The converter is available in a compact 8-pin MSOP package, making it suitable for space-constrained applications.

Applications:

The LD39115J28R is suitable for a wide range of applications, including:

1. Portable electronics: The high efficiency and wide input voltage range make it ideal for use in portable devices such as smartphones, tablets, and wearables.
2. Industrial equipment: The LD39115J28R can be used to provide a stable power supply for industrial equipment, such as sensors and controllers.
3. Automotive electronics: The converter can be used in automotive applications, such as infotainment systems and power management systems.
4. Medical devices: The LD39115J28R can be used in medical devices that require a stable and reliable power supply, such as portable medical instruments and wearable health monitors.
5. Telecommunications: The converter can be used in telecommunications equipment, such as base stations and routers, to provide a stable power supply.

In summary, the LD39115J28R from STMicroelectronics is a high-efficiency step-down converter with a wide input voltage range and various features that make it suitable for a wide range of applications. Its compact form factor and high efficiency make it an ideal choice for space-constrained and power-sensitive applications.