STMicroelectronics

L7987TR

The L7987TR is a high-performance, step-up/step-down, synchronous, switching regulator from STMicroelectronics. This device is designed to provide efficient and stable power conversion in a wide range of applications, including battery-powered systems, portable devices, and power supplies.

Description:

The L7987TR is a versatile switching regulator that can operate in both step-up (boost) and step-down (buck) modes. It features a wide input voltage range, high efficiency, and low quiescent current, making it suitable for a variety of power conversion applications. The device is available in a compact 5-pin SC-88 package, which is ideal for space-constrained designs.

Features:

1. Wide input voltage range: The L7987TR can operate with input voltages ranging from 2.5V to 40V, making it suitable for a wide range of power sources.
2. High efficiency: The device offers high efficiency levels, with a typical efficiency of up to 93% in step-up mode and up to 90% in step-down mode.
3. Low quiescent current: The L7987TR has a low quiescent current of 3.5µA in sleep mode, which helps to minimize power consumption in battery-powered applications.
4. Synchronous rectification: The device uses synchronous rectification in both step-up and step-down modes, which improves efficiency and reduces power losses.
5. Programmable output voltage: The output voltage can be easily adjusted using an external resistor divider, allowing for customization to specific application requirements.
6. Soft-start function: The L7987TR features a soft-start function that limits the inrush current during startup, protecting the power source and other components.
7. Over-current, over-temperature, and short-circuit protection: The device includes built-in protection features to ensure safe and reliable operation.
8. Small form factor: The L7987TR is available in a compact SC-88 package, making it suitable for space-constrained applications.

Applications:

1. Portable devices: The L7987TR is ideal for powering portable devices such as smartphones, tablets, and wearable electronics, where efficient power conversion and low power consumption are critical.
2. Battery-powered systems: The device can be used in battery-powered systems, such as drones, robotics, and remote monitoring equipment, to provide efficient power conversion and extend battery life.
3. Power supplies: The L7987TR can be used in compact power supplies for a variety of electronic devices, including home appliances, industrial equipment, and medical devices.
4. LED lighting: The device can be used in LED lighting applications to provide efficient power conversion and control the brightness of the LEDs.
5. Automotive applications: The L7987TR can be used in automotive applications, such as infotainment systems, GPS devices, and in-vehicle communication systems, where efficient power conversion and a wide input voltage range are essential.

In summary, the L7987TR from STMicroelectronics is a versatile and efficient switching regulator that can be used in a wide range of power conversion applications. Its high efficiency, low quiescent current, and built-in protection features make it an excellent choice for designers looking to optimize power management in their systems.