A6275SLWTR-T Integrated Circuits (ICs)

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PMIC–LED drivers can provide a higher power efficient and brighter illumination than traditional kinds of lighting. One example of such a driver is A6275SLWTR-T. It is a low voltage linear driver of high efficiency, designed for driving up to four strings of LEDs on one or two channels of constant current for various automotive lighting applications.

A6275SLWTR-T provides a wide range of output current options from 50mA to 175mA, with a nominal output voltage of up to 8V. Its integrated power switches provide excellent efficiency while driving LEDs, with a switching frequency up to 250kHz. Its LED open/short circuitry can detect LED open circuit/short circuit/voltage drop out as well as control LED temperature over heat protection. Moreover, the device also has a wide operating temperature range which allows it to be used in a variety of automotive applications.

The application of A6275SLWTR-T is widely used in the automotive lighting such as interior light, dashboard light and map reading light. It can also be used in the backlighting of automotive audio system.

In terms of working principle, A6275SLWTR-T is a linear driver which can be used to drive up to four strings of LEDs in one or two channels of constant current. It has a wide operating voltage range, from 4.5V to 27V, and a wide operating temperature range, from -40°C to 125°C. The device can provide a wide range of output currents, from 50mA to 175mA, and its integrated power switches support a switching frequency up to 250kHz.

Furthermore, A6275SLWTR-T also has integrated over temperature protection and LED open/short protection. The over temperature protection will disable the output if the junction temperature of the device exceeds a set threshold value. The LED open/short protection will detect the open circuit, short circuit and voltage drop of the LEDs. In case of the LED open/short condition, the short or open LEDs will be turned off.

In conclusion, A6275SLWTR-T is a low voltage linear driver of high efficiency, designed for driving up to four strings of LEDs on one or two channels of constant current for various automotive lighting applications. Its wide range of output current options, wide operating temperature and voltage range, LED open/short circuitry, over temperature protection and integrated power switches provide great performance. For these reasons, it has become widely used in automotive lighting applications.

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