LM4970SDX/NOPB

LED drivers are used to provide a constant current to light emitting diodes (LEDs), providing power to the LED for a sustained and uniform output of light. Power Management Integrated Circuits (PMICs) such as the LM4970SDX/NOPB are designed specifically to meet the power requirements of LED based systems. The LM4970SDX/NOPB is specifically designed to provide a current regulated power source to drive standard LEDs with high efficiency.

Overview

The LM4970SDX/NOPB is a configurable device that can be used for multiple applications such as distributed power systems, buck-boost converter, high power buck-boost converter, boost converter, SEPIC and linear regulators. It is designed to provide multiple channels of regulation voltage and current that goes up to 2A at a low dropout. It is ideal for use in automotive applications, especially in high-power systems, as well as any high-efficiency system that requires multiple voltage rails.

The LM4970SDX/NOPB is an integrated LED driver with a maximum output of up to 2A. It is designed with a sampling synchronous buck-boost controller and an integrated PFC that provides an efficient power source for LED-based systems. The device also has an integrated high-frequency synchronous buck-boost converter that enables operation at very high frequencies, up to the 1MHz range, enabling high-efficiency operation for a wide range of LED applications. The device has a programmable current output and a built-in overvoltage protection circuit.

Features and Benefits

The LM4970SDX/NOPB is suitable for many LED applications due to its wide range of features and benefits. These features and benefits include:

• Integrated over-voltage protection circuit
• Integrated PFC that enables operation at high-efficiency
• Programmable current output
• Wide input voltage range
• Low power dissipation
• Integrated high-frequency synchronous buck-boost converter
• 100% testing
• Protection against short-circuits and over-temperature
• High power output

Applications

The LM4970SDX/NOPB is an ideal device for driving LEDs and other lighting applications, due to its high efficiency, wide input range and low dropout. It is suitable for automotive applications, such as automotive tail light and headlight applications, as well as applications in general lighting, industrial lighting and street lighting. The device can also be used for automotive audio, video, acoustic and mobile phone applications.

Working Principle

The LM4970SDX/NOPB is a current regulated device, which means that it is designed to provide a constant current to the load (LEDs). The device works by regulating the power output to the LEDs, so that a steady current flows through the LEDs, creating a uniform light output. The device works by regulating the internal power switch to provide a regulated current to the LED. The amount of current that is regulated is determined by the external inductor and the internal current amplifier.

The LM4970SDX/NOPB also has an over-voltage protection circuit which helps to protect the device from over-voltage damage, as well as a built-in temperature protection circuit which helps protect the device from high-temperature damage. The device also features a programmable current output, which allows the user to customize the current output for the specific LED application.

Conclusion

The LM4970SDX/NOPB is an ideal device for LED driver applications, due to its features and benefits. It is specifically designed to drive LED based systems, and is suitable for automotive, general lighting and industrial lighting applications. Due to its wide input range, low power dissipation, current regulation and integrated over-voltage protection, it is well suited for high-power LED systems. The device also has an integrated high-frequency synchronous buck-boost converter, which enables operation at high frequencies and high efficiency.