Product details

Number of channels (#) 6 Topology Boost with Current Sink, Sepic Controller Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 3 Vin (Max) (V) 48 Vout (Min) (V) 7 Vout (Max) (V) 48 Iout (Max) (A) 0.9 Iq (Typ) (mA) 15 Switching frequency (Max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Enable/Shutdown, Fault Detection, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C Control, LED Open Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal Prewarning and Shutdown
Number of channels (#) 6 Topology Boost with Current Sink, Sepic Controller Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 3 Vin (Max) (V) 48 Vout (Min) (V) 7 Vout (Max) (V) 48 Iout (Max) (A) 0.9 Iq (Typ) (mA) 15 Switching frequency (Max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Enable/Shutdown, Fault Detection, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C Control, LED Open Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal Prewarning and Shutdown
HTSSOP (DCP) 38 43 mm² 9.7 x 4.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Input Voltage Operating Range 3 V to 48 V
  • Six High-Precision Current Sinks
    • Current Matching 1% (typical)
    • Dimming Ratio 32 000:1 Using 152-Hz LED Output PWM Frequency
    • Up to 16-bit LED Dimming Resolution With SPI, I2C, or PWM Input
    • Automatically Detects Used LED Strings and Adjusts LED-Channel Phase Shift
    • Independent Current Control for Each Channel
  • Hybrid PWM and Current Dimming Function
  • Up to 47-V VOUT Boost or SEPIC DC/DC Controller
    • Switching Frequency 300 kHz to 2.2 MHz
    • Boost Spread Spectrum for Reduced EMI
    • Boost Sync Input to Set Boost Switching Frequency From an External Clock
    • Integrated Charge Pump Supports Low VIN Conditions Such as Cold Crank
    • Output Voltage Automatically Discharged When Boost is Disabled
  • Extensive Fault Diagnostics
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Input Voltage Operating Range 3 V to 48 V
  • Six High-Precision Current Sinks
    • Current Matching 1% (typical)
    • Dimming Ratio 32 000:1 Using 152-Hz LED Output PWM Frequency
    • Up to 16-bit LED Dimming Resolution With SPI, I2C, or PWM Input
    • Automatically Detects Used LED Strings and Adjusts LED-Channel Phase Shift
    • Independent Current Control for Each Channel
  • Hybrid PWM and Current Dimming Function
  • Up to 47-V VOUT Boost or SEPIC DC/DC Controller
    • Switching Frequency 300 kHz to 2.2 MHz
    • Boost Spread Spectrum for Reduced EMI
    • Boost Sync Input to Set Boost Switching Frequency From an External Clock
    • Integrated Charge Pump Supports Low VIN Conditions Such as Cold Crank
    • Output Voltage Automatically Discharged When Boost is Disabled
  • Extensive Fault Diagnostics

The LP8863-Q1 is an automotive high-efficiency LED driver with boost controller. The six high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. Current sink brightness can be controlled individually and globally through the SPI or I2C interface; brightness can also be globally controlled with PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8863-Q1 to avoid disturbance for AM radio band.

The LP8863-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

The LP8863-Q1 is an automotive high-efficiency LED driver with boost controller. The six high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. Current sink brightness can be controlled individually and globally through the SPI or I2C interface; brightness can also be globally controlled with PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8863-Q1 to avoid disturbance for AM radio band.

The LP8863-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

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Technical documentation

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Type Title Date
* Data sheet LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels datasheet (Rev. B) PDF | HTML 02 Jul 2018
Application note LP886x-Q1 Feedback Resistor Design Considerations PDF | HTML 12 May 2021
Functional safety information LP8863-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 27 Apr 2020
Application note LP8863-Q1 Automatic String Detection Deep Dive PDF | HTML 06 Apr 2020
Application note Some Guidelines and Tips for the LED Driver Application 14 Aug 2019
White paper Powering automotive displays to create interactive driving experiences 21 Dec 2017
Application note LP8863-Q1 External Component Selection Guide (Rev. A) 24 Jul 2017
Application note PCB Layout Guideline for Automotive LED Drivers 07 Apr 2017
EVM User's guide LP8863-Q1 Boost Evaluation Board (LP8863BOOSTEVM) 15 Mar 2017
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Technical article Take better selfies with innovative LED flashes 18 Nov 2014
Technical article Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LP8863EVM — LED Driver for Automotive Application Evaluation Module

User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

LP8863EVM GUI

SNVC209.ZIP (4571 KB)
lock = Requires export approval (1 minute)
Simulation model

LP8863-Q1 PSpice Transient Model

SNVMB63.ZIP (283 KB) - PSpice Model
Calculation tool

LP8863-Q1 External Components Calculation Tools

SNVR495.ZIP (334 KB)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-01008 — Optical Sense Backlight Reference Design with Temperature Sensing

This reference design conserves power and extends life of LCD and backlight by adjusting the backlight brightness relative to the ambient light level. The capTIvate touch slider allows the brightness to be finetuned per the user's brightness preference. The sensitive thermal requirements of the (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
HTSSOP (DCP) 38 View options

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