LM3492MH/NOPB

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PMIC - LED Drivers provide a reliable and efficient method of driving LED (Light-Emitting Diode) circuits. LED circuits require a constant regulated current source to produce a reliable amount of light intensity. The LM3492MH/NOPB (hereafter referred to as LM3492) from Texas Instruments is a family of LED drivers that are specifically designed for the purpose of driving high efficiency LED arrays or strings in automotive, appliance and general lighting applications. It incorporates current regulation, temperature protection and boost voltage regulation for reliable and consistent LED illumination.

The LM3492 contains an integrated step-up DC/DC converter in a small, low profile package. It operates with an input voltage range of 6 V to 42 V, making it suitable for almost any standard automotive application. The device is capable of accepting a wide range of input voltages, from battery-operated mobile systems to power line-powered residential lighting applications. It features an integrated current regulation loop that allows it to accurately maintain a constant LED current in dimming applications. The boost voltage is set by an external resistor and can be adjusted to match the LED string voltage.

The LM3492 also features thermal fold-back protection, allowing it to operate safely in high temperature environments without the need for an external temperature sensing device. In the event of an over-temperature condition, the current is reduced to protect the device from thermal damage. Additionally, the LM3492 provides short-circuit protection, fold-back current protection, and open-LED protection, ensuring a safe and reliable operation.

The LM3492 is designed to drive high-power LEDs in automotive lighting applications. It can drive up to 12 LEDs in a string, with an output current of 40 mA. The device is also capable of dimming the LED string via an external pulse width modulation (PWM) signal, to provide a wide range of brightness levels. The LM3492 can also be used to drive arrays of LEDs in display applications, such as LCD backlighting. The device can drive up to 15 strings of 2 LEDs each, with an output current of 30 mA, providing efficient and reliable illumination.

In summary, the LM3492 is a compact and efficient LED driver for automotive, appliance and general lighting applications. It features integrated current regulation and protection, making it a safe and reliable solution for a wide range of applications. It can drive up to 12 LEDs in a string and up to 15 strings of 2 LEDs each, allowing it to be used in a wide range of lighting applications. Additionally, the device can be used to dim the LED string via an external PWM signal. The LM3492 is an ideal solution for automotive and lighting applications that require efficient and reliable LED illumination.

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