STMicroelectronics

L4931ABD50-TR

The L4931ABD50-TR is a high-performance, step-down (buck) switching regulator from STMicroelectronics. It is designed to provide efficient and stable power conversion for a wide range of applications, including those requiring high current and low-voltage outputs.

Description:

The L4931ABD50-TR is a monolithic integrated circuit (IC) that provides a highly efficient step-down power conversion solution. It features a synchronous rectification mode, which allows for high efficiency and low power dissipation. The IC is available in a thermally enhanced 5x6 DFN (Dual Flat No lead) package, which is designed to provide excellent thermal performance in a compact form factor.

Features:

1. Wide input voltage range: The L4931ABD50-TR can operate with input voltages ranging from 4.5V to 38V, making it suitable for a wide range of power supply applications.
2. High efficiency: The synchronous rectification mode allows for high efficiency, with typical values ranging from 90% to 95% depending on the input voltage and output current.
3. Low quiescent current: The L4931ABD50-TR has a low quiescent current of 150µA, which helps to minimize power consumption during light load conditions.
4. High output current: The IC can deliver output currents up to 5A, making it suitable for applications that require high current levels.
5. Low dropout voltage: The L4931ABD50-TR has a low dropout voltage of 300mV at full load, which ensures stable operation even under low input voltage conditions.
6. Wide output voltage range: The output voltage can be adjusted from 0.9V to the input voltage minus the dropout voltage, providing flexibility for various applications.
7. Protection features: The IC includes over-current protection, over-temperature protection, and short-circuit protection to ensure safe and reliable operation.
8. Small form factor: The 5x6 DFN package provides a compact solution for space-constrained applications.

Applications:

1. Portable devices: The L4931ABD50-TR is suitable for powering portable devices such as smartphones, tablets, and wearables, where high efficiency and low power consumption are critical.
2. Industrial equipment: The high efficiency and wide input voltage range make the L4931ABD50-TR suitable for use in industrial equipment, such as motor drives and control systems.
3. LED lighting: The step-down regulator can be used to provide efficient power conversion for LED lighting applications, where high current and low-voltage outputs are required.
4. Power banks: The L4931ABD50-TR can be used in power banks to provide efficient charging and discharging of batteries.
5. Medical devices: The high efficiency and low quiescent current make the L4931ABD50-TR suitable for use in battery-powered medical devices, such as portable defibrillators and monitoring equipment.

In summary, the L4931ABD50-TR from STMicroelectronics is a high-performance step-down switching regulator that offers high efficiency, high output current, and a wide input voltage range. Its compact form factor and protection features make it suitable for a wide range of applications, including portable devices, industrial equipment, LED lighting, power banks, and medical devices.