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Introduction, characteristics, and applications of Texas Instruments LP8865-Q1 multi-topology LED driver

2/13/2024 9:00:00 AM

Summary: Inductor fast dimming, non-synchronous multi-topology solution, wide input range from 4.5V to 65V.

LP8865-Q1 Texas Instruments

The Texas Instruments LP8865-Q1 multi-topology LED driver is a non-synchronous multi-topology solution with inductive fast dimming and operates over a wide 4.5V to 65V input range. These LED drivers are configurable with switching frequencies from 100kHz to 2.2MHz, with optional spread spectrum capabilities for better EMI performance. The LP8865-Q1 series of drivers provide a variety of system protections, including LED open and short circuits, sense resistor open and short circuits, configurable thermal fallback and shutdown. These multi-topology drivers support four dimming options: analog, PWM, hybrid and flexible. The LP8865-Q1 driver is ideal for automotive infotainment, automotive instrument clusters, head-up displays (HUD), and automotive lighting. These LP8865-Q1 devices are qualified for AEC-Q100 automotive applications.


characteristic

  • AEC-Q100 Automotive Applications:

    • -40°C to 125°C, T(A)

    • Temperature level 1:

  • Integrated MOSFET buck, buck-boost and boost topologies:

    • 4.5V to 65V wide input voltage range

    • Integrated 2.6A and 150 milliohm MOSFET

    • 100kHz to 2.2MHz switching frequency range

    • Spread spectrum low EMI

  • High-precision power field effect tube dimming:

    • Output current up to 2A in buck topology

    • Analog dimming (dimming ratio 256:1)

    • Fast PWM dimming (150ns pulse width)

    • Mixing and flexible dimming

  • Comprehensive protection features:

    • error output

    • LED open and short circuit protection

    • Cycle-by-Cycle Current Limit

    • Switch FET fail protection

    • Thermal shutdown

    • Configurable thermal retracement curve


app

  • Automotive Infotainment

  • car dashboard

  • Head-up display (HUD)

  • Automotive lighting

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