STMicroelectronics

L7987L

The L7987L is a high-efficiency step-down (buck) converter from STMicroelectronics. It is designed to provide a regulated output voltage from a higher input voltage source. Here is a brief description of the L7987L, its features, and applications:

Description:

The L7987L is a high-efficiency, synchronous, step-down converter that can operate with a wide range of input voltages (2.5V to 36V) and provide a regulated output voltage as low as 0.9V. It is available in a compact 8-pin MSOP package, making it suitable for space-constrained applications.

Features:

1. High Efficiency: The L7987L offers high efficiency (up to 96%) across a wide load range, making it ideal for battery-powered applications where energy conservation is critical.

2. Wide Input Voltage Range: It can accept input voltages from 2.5V to 36V, making it versatile for different power supply scenarios.

3. Low Output Voltage: The L7987L can provide an output voltage as low as 0.9V, which is useful for low-voltage applications.

4. Synchronous Rectification: The use of synchronous rectification in the L7987L reduces conduction losses and improves efficiency, especially at higher switching frequencies.

5. Short Circuit and Overload Protection: The device includes protection against short circuits and overload conditions to prevent damage to the converter or the output load.

6. Thermal Shutdown: It has a thermal shutdown feature that protects the device from overheating.

7. Small Size: The 8-pin MSOP package is compact, making the L7987L suitable for portable and space-constrained applications.

8. Low Quiescent Current: The device has a low quiescent current, which is beneficial for battery-powered applications where minimizing power consumption is important.

Applications:

1. Portable Electronics: Due to its high efficiency and low quiescent current, the L7987L is well-suited for portable devices like smartphones, tablets, and wearables.

2. Power Banks: It can be used in power banks to efficiently step down voltage from a battery to charge or power devices.

3. Medical Devices: The L7987L can provide a stable power supply for low-voltage medical equipment, such as hearing aids or portable diagnostic devices.

4. IoT Devices: Internet of Things (IoT) devices often require efficient power management, making the L7987L a good choice for these applications.

5. Industrial Equipment: For industrial applications where a stable, low-voltage power supply is needed, the L7987L can be used to provide regulated power from a higher voltage source.

6. Battery Management Systems: It can be integrated into battery management systems to efficiently manage and regulate power to and from batteries.

The L7987L is a versatile and efficient step-down converter that can be used in a wide range of applications where a stable, low-voltage power supply is required. Its high efficiency, compact size, and robust protection features make it a popular choice for designers looking to optimize power management in their products.