The L4979D from STMicroelectronics is a monolithic integrated circuit designed to provide a reliable power management solution for automotive and industrial applications. This robust device is a step-down monolithic power switching regulator capable of delivering up to 2 A of current at output voltages adjustable from 3.3 V to 50 V.

Key Features

• High Output Voltage Precision: The L4979D ensures precise control over output voltage, making it suitable for sensitive electronic components that require stable power supply.
• Low Dropout Operation: This regulator is capable of low dropout performance, which enhances its efficiency and allows for continuous operation even under low input voltage conditions.
• Thermal Shutdown and Current Limiting: Built-in thermal shutdown and current limiting features protect the device and the application from damage due to overheating or overcurrent conditions.
• Wide Input Voltage Range: The device can operate with an input voltage range from 8 V to 55 V, accommodating a variety of power sources and fluctuating input conditions.
• Adjustable Output Voltage: Users can set the output voltage from 3.3 V to 50 V to meet the requirements of the application through external resistors.
• High Switching Frequency: The L4979D operates at a switching frequency up to 500 kHz, allowing the use of smaller external components, which can reduce space and cost.

Applications

The versatile nature of the L4979D makes it ideal for a wide array of applications, including but not limited to:

• Automotive systems
• Power supplies for microcontrollers
• Industrial control systems
• Step-down converters for battery-operated devices

The L4979D is available in a Pentawatt HV package, which is designed to offer optimal thermal performance and space-saving on the PCB. With its comprehensive set of features, the L4979D is a go-to choice for designers looking for a reliable and efficient power management solution.