LM3423MHBSTEVAL/NOPB

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The LM3423MHBSTEVAL/NOPB evaluation board is part of the company’s family of LED drivers. It is a DC-DC high-efficiency, high-side current-controlled, charge pump-driven LED driver. It is designed to drive high-brightness LEDs and white LEDs in automotive, industrial, emergency and pole-lighting applications.

The LM3423MHBSTEVAL/NOPB uses a charge pump driver, operated by an external MOSFET high-side current regulator. This allows the high-side current to be controlled accurately via an external voltage, thus providing an LED current operation over a wide range. The LED driver also provides an output short-circuit protection and LED open-load protection, making it suitable for automotive, industrial, emergency and other applications.

The LM3423MHBSTEVAL/NOPB features a high efficiency, wide input voltage range and low input current ripple of 0.5mA. It is capable of driving high power LEDs from an input voltage range of 5V to 48V. The board includes two selectable current range settings and three selectable LED configurations. The output current level can be easily adjusted from 1A to 2A. The LED driver also features an adjustable LED current level range of 0.1mA to 2.0A.

In addition, the LM3423MHBSTEVAL/NOPB is designed to comply with the most stringent automotive EMI/EMC standards, including CISPR 25 Class 5 and IEC60747 4-5. The board also has an automotive temperature range of -40C to +125C, making it suitable for a wide range of applications.

The board’s working principle is that the input voltage is filtered, then converted to a ±12V charge pump to provide the positive and negative voltage required to drive the high-side MOSFET. The external MOSFET high-side current regulator is then used to monitor and control the LED current, providing an accurate and responsive current regulation.

The board is easy to use and programming is based on an I2C or a digital pin on the board. Input and output port measurements, switch conduction and LED forward voltage drop accuracy can all be monitored and adjusted through a graphical user interface (GUI).

The LM3423MHBSTEVAL/NOPB evaluation board is a powerful LED driver designed to meet the demands of automotive, industrial, emergency and other applications. With its high efficiency, wide input voltage range and adjustable LED current level, the board is a great choice for LED lighting projects.

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