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Product details

Parameters

Topology Boost with Current Sink, Sepic Controller Channels (#) 6 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 LED current per channel (mA) 150 Switching frequency (Max) (kHz) 2200 Operating temperature range (C) -40 to 125 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 Applications LCD Backlight Rating Automotive open-in-new Find other Automotive LED drivers

Package | Pins | Size

HTSSOP (DCP) 38 43 mm² 9.7 x 4.4 open-in-new Find other Automotive LED drivers

Features

  • 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

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Description

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
* Datasheet LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels datasheet (Rev. B) Jul. 02, 2018
Application notes LP8863-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution Apr. 27, 2020
Application notes LP8863-Q1 Automatic String Detection Deep Dive Apr. 06, 2020
Application notes Some Guidelines and Tips for the LED Driver Application Aug. 14, 2019
White papers Powering automotive displays to create interactive driving experiences Dec. 21, 2017
Application notes LP8863-Q1 External Component Selection Guide (Rev. A) Jul. 24, 2017
Application notes PCB Layout Guideline for Automotive LED Drivers Apr. 07, 2017
User guides LP8863-Q1 Boost Evaluation Board (LP8863BOOSTEVM) Mar. 15, 2017
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014

Design & development

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Hardware development

EVALUATION BOARDS Download
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GUIS FOR EVALUATION MODULES (EVM) Download
SNVC209.ZIP (4571 KB)

Design tools & simulation

SIMULATION MODELS Download
SNVMB63.ZIP (283 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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Reference designs

REFERENCE DESIGNS Download
Optical Sense Backlight Reference Design with Temperature Sensing
TIDA-01008 — 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 LCD (...)
document-generic Schematic document-generic User guide

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HTSSOP (DCP) 38 View options

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