STMicroelectronics

L6739TR

L6739TR Description

The L6739TR is a high-performance, single-output, synchronous buck DC-DC switching controller designed by STMicroelectronics. This product is part of the DC-DC Switching Controllers category and is now considered obsolete. It operates with a switching frequency of 200kHz and features a positive output configuration. The L6739TR is designed to work within a supply voltage range of 4.75V to 13.2V and is compliant with the RoHS3 standard. It has a moisture sensitivity level of 3, which means it can be exposed to moisture for up to 168 hours before being used.

L6739TR Features

• Transistor Driver Output Type: The L6739TR features a transistor driver output, which allows for efficient power transfer and control.
• Synchronous Rectifier: This feature helps to minimize power losses and improve efficiency.
• Control Features: The L6739TR offers enable, frequency control, phase control, and power good control features, providing flexibility in various applications.
• Duty Cycle: The maximum duty cycle is 100%, allowing for high-efficiency operation.
• Output Phases: With one output phase, the L6739TR is suitable for single-output applications.
• Package: The L6739TR is available in a tape and reel (TR) package, making it suitable for surface mount applications.

L6739TR Applications

The L6739TR is ideal for applications requiring a high-efficiency, single-output DC-DC converter. Some specific use cases include:

1. Power Supply for Electronic Devices: Due to its high efficiency and wide input voltage range, the L6739TR can be used in power supply applications for various electronic devices.
2. Telecommunications Equipment: The L6739TR's ability to handle a wide input voltage range makes it suitable for powering telecommunications equipment.
3. Industrial Control Systems: The L6739TR's robustness and flexibility make it an excellent choice for industrial control systems that require reliable power conversion.

Conclusion of L6739TR

While the L6739TR is an obsolete product, it was a high-performance DC-DC switching controller with several unique features and advantages. Its transistor driver output, synchronous rectifier, and control features made it suitable for a wide range of applications. Although it is no longer in production, the L6739TR remains a testament to STMicroelectronics' commitment to providing high-quality, efficient power management solutions.