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Introduction, characteristics, and applications of Texas Instruments LP8868-Q1 multi-topology LED driver

2/14/2024 9:00:00 AM

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

LP8868-Q1 Texas Instruments

Texas Instruments LP8868-Q1 multi-topology LED driver is a 4A non-synchronous multi-topology driver with inductive fast dimming function and operates over a wide input range of 4.5V to 65V. These LED drivers are configurable with switching frequencies from 100kHz to 2.2MHz, with optional spread spectrum capabilities for better EMI performance. The LP8868-Q1 series also supports standard cathode connections and single-layer PCB designs. These drivers are ideal for automotive infotainment, automotive dashboards, heads-up displays (HUD) and automotive lighting.

The LP8868-Q1 driver supports four dimming options, including analog dimming, PWM dimming, hybrid dimming and flexible dimming. These drivers feature extensive fault detection: LED on and short detection, sense resistor on and short detection, and configurable thermal fold and shutdown protection.


characteristic

  • AEC-Q100 Automotive Applications:

    • 40°C ~ 125°C, T(A)

    • Temperature level 1:

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

    • 4.5V to 65V wide input voltage

    • Integrated 5.2A 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 4A in buck topology

    • 256:1 analog dimming

    • 150ns fast PWM dimming

    • 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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