LM3445-220VEVAL/NOPB

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An LED driver is an electrical device that supplies power to LED lamps or light-emitting diode (LED) modules. LED drivers are used in a wide variety of LED lighting applications such as LED light bulbs, LED backlights, LED display fixtures, and LED strip lights. The LM3445-220VEVAL/NOPB is an evaluation board designed to demonstrate the capabilities of the LM3445 LED driver. It is specifically designed for applications such as LED downlight retrofit bulbs, accent lighting, and automotive interior or exterior applications. This board is equipped with a number of features that make it suitable for a range of LED driving applications.

The LM3445-220VEVAL/NOPB LED driver utilizes a half-bridge switching method to achieve LED current regulation. The driver contains both a high-side and low-side MOSFETs with variable gate thresholds to achieve peak current and minimum on-time control. This makes it suitable for either buck or boost applications. The board also includes the LM3445 and a control board, which contain the necessary active components such as inductors, driver and MOSFETs. This board is designed for output current mode control and can deliver up to 1A of output current.

The board also contains an on-board resistor-capacitor (RC) timing network that specifies the off-time of the step-down converter. This allows the user to adjust the on-time and off-time independently, which enables the adjustment of peak current and minimum on-time for applications such as LED backlight dimming. The board also provides isolation between input and output, which is necessary for safety reasons in LED applications. This also helps minimize any interference from the output to the input and vice versa.

The LM3445-220VEVAL/NOPB evaluation board also provides several safety features. It includes an over-voltage protection (OVP) circuit to prevent the board from being damaged in the event of a short circuit. The board also includes a temperature-compensated frequency limit, which ensures the frequency of operation is maintained within a set range to maximize efficiency.

Overall, the LM3445-220VEVAL/NOPB evaluation board is an ideal choice for LED driver applications. It provides the necessary safety features and enables the user to customize the driver\'s behavior by adjusting the timing network. This makes it suitable for a wide range of applications.

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