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The LP8861QPWPRQ1 is a low EMI, high performance 4-channel LED driver for automotive lighting.

Instructions:

The LP8861-Q1 is a low EMI and easy to use automotive class efficient LED driver with an integrated boost /SEPIC converter. The device has four high-precision current traps that provide brightness control with a high dimming ratio via pulse-width modulation (PWM) input signals.

The LP8861-Q1 has an input voltage range of 4.5V to 40V to support car start/stop and sudden load drop. The LP8861-Q1 integrates rich fault detection and protection functions.

Features

• Meets automotive application requirements

• Have the following results in compliance with AECQ100:

- Device temperature Level 1: The ambient operating temperature ranges from -40°C to +125°C

• Input operating voltage range: 4.5V to 40V

• Four high-precision current traps

- Current matching is 1% (typical value)

- LED string current up to 100mA/ channel

- The dimming ratio at 100Hz is 10,000:1

• Integrated boost /SEPIC converter for LED lamp string power supply

- Output voltage up to 45V

- Switching frequency: 300kHz to 2.2MHz

- Switch synchronization input

- Spread spectrum reduces electromagnetic interference (EMI)

• Power line field FET control for surge current protection and standby energy saving

• Rich fault detection and fault tolerance features

- Fault output

- Input voltage overvoltage protection (OVP), Undervoltage lock (UVLO) and overcurrent protection (OCP)

- Open and short circuit LED fault detection

- Use an external temperature sensor to automatically reduce LED current

- The hot switch is off

• Minimize the number of external components

Applications

• Backlight for the following applications:

- Automotive infotainment system

- Car dashboard

- Smart car mirror

- Head-up display (HUD)

- Central Information Display (CID)

- Audio and Video Navigation (AVN)