LP8543SQE/NOPB Integrated Circuits (ICs)

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LP8543SQE/NOPB is a High Efficiency I2C Controlled LED Driver. It can be used to drive external LEDs with PWM or analog dimming control. The LP8543SQE/NOPB is a high-efficiency, high voltage I2C controlled, low-cost LED driver for 1-string of external LEDs with up to 20 V. It is designed for automotive, commercial, and consumer applications. Its integrated features include onboard error detection, output OVP, thermal overload protection, and supports analog and PWM dimming for smooth LED brightness adjustments.

Application fields of LP8543SQE/NOPB include automotive headlamps, fog lights, tail lamps, running lights, and turn signals. It can also be used in many consumer and commercial applications, such as LCD TV and monitor backlighting, backlighting for instrumentation and home theaters, outdoor lighting, decorative and architectural lighting, and sign and channel letters.

The LP8543SQE/NOPB is an I2C controlled, low-cost LED driver for 1-string with up to 20 V external LEDs. It supports a wide adjustable output voltage range (2.5V to 20 V) and currents up to 0.5 A/string. By using external P-channel and N-channel MOSFETs, the driver can support high LED current loads with very low quiescent current. It also features an integrated soft-start, output short circuit protection, and a programmable current limit. The LP8543SQE/NOPB has an onboard on chip error detection circuit and can provide output overvoltage protection.

The working principle of the LP8543SQE/NOPB is simple. The controller can be used to independently control the brightness of up to four parallel strings of LEDs with its internal dimming control register. The LED supply voltage is digitally adjusted using a series of simple commands. With its onboard error detection, the controller can detect over-current, over-voltage, and temperature conditions. Additionally, it supports both analog and PWM dimming control, allowing smooth LED brightness adjustments.

In conclusion, the LP8543SQE/NOPB is an excellent, low-cost solution for driving up to 20 V external LEDs with I2C control. It provides excellent functionality, such as onboard error detection, output OVP, thermal overload protection, and both analog and PWM dimming for smooth LED brightness adjustments. This makes it ideal for automotive, commercial, and consumer applications.

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