MIC2287BD5-TR

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The MIC2287BD5-TR is an LED driver with integrated current sense and pre-biasing capabilities. Designed to support multiple LED channels with a constant current output, it contains an integrated 18-bit Digital to Analog Converter (DAC) and an adjustable low dropout (LDO) regulator. Additionally, the IC provides a wide range of safety features, including over-voltage protection, over-temperature protection, and open circuit protection.

With a wide input voltage range from 2.6 V to 30 V, the MIC2287BD5-TR is suitable for a variety of applications, from automotive lighting to consumer lighting. It is a particularly useful component for automotive applications, where it can reduce component count, save board space and improve system reliability.

At the heart of the MIC2287BD5-TR is a DAC, which controls the output current of the LED driver. The DAC enables the LED driver to deliver a precise current to the LED, regardless of voltage variations or LED temperature changes. With an output current capability up to the 150 mA, the LED driver can enable more efficient operation with higher peak luminous flux. Additionally, the output current can be adjusted in 1 mA increments.

In addition to current control, the MIC2287BD5-TR features a built-in pre-biasing capability, which is designed to reduce inrush current, improve system stability and extend the life of LEDs. The pre-biasing function adjusts the LED current on a per-channel basis, allowing the LED to turn on and off with lower current, thus reducing LED inrush current and lowering LED power dissipation.

In order to ensure safe operation under an extensive temperature range, the MIC2287BD5-TR includes an integrated temperature monitoring feature. The temperature sensing circuit monitors the junction temperature and can provide over-temperature protection for the IC, as well as for external components. Additionally, the IC includes over-voltage protection, which prevents the IC and external LEDs from being damaged by an input over-voltage.

Overall, the MIC2287BD5-TR is an ideal solution for automotive and consumer lighting applications which require precise control, extended lifetime and advanced safety functions. Its integrated current sense, pre-biasing and protection functions reduce component count, save board space and improve safety.

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