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汽車 LED 驅動器

LP8863-Q1

現行

具六個 150-mA 通道的 LP8863-Q1 車用顯示器 LED 背光驅動器

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產品規格表

LP8863-Q1

現行
產品規格表 立即訂購

產品詳細資料

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 62.08 mm² 9.7 x 6.4
  • 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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類型 標題 日期
* Data sheet LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels datasheet (Rev. B) PDF | HTML 2018年 7月 2日
Application note LP886x-Q1 Feedback Resistor Design Considerations PDF | HTML 2021年 5月 12日
Functional safety information LP8863-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 2020年 4月 27日
Application note LP8863-Q1 Automatic String Detection Deep Dive PDF | HTML 2020年 4月 6日
Application note Some Guidelines and Tips for the LED Driver Application 2019年 8月 14日
White paper Powering automotive displays to create interactive driving experiences 2017年 12月 21日
Application note LP8863-Q1 External Component Selection Guide (Rev. A) 2017年 7月 24日
Application note PCB Layout Guideline for Automotive LED Drivers 2017年 4月 7日
EVM User's guide LP8863-Q1 Boost Evaluation Board (LP8863BOOSTEVM) 2017年 3月 15日

設計與開發

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開發板

LP8863EVM — 用於汽車應用的 LED 驅動器評估模組

使用指南: PDF
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開發模組 (EVM) 的 GUI

SNVC209 — LP8863EVM GUI

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產品
汽車 LED 驅動器
LP8863-Q1 — 具六個 150-mA 通道的 LP8863-Q1 車用顯示器 LED 背光驅動器
硬體開發
開發板
LP8863EVM — 用於汽車應用的 LED 驅動器評估模組
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模擬型號

LP8863-Q1 PSpice Transient Model

SNVMB63.ZIP (283 KB) - PSpice Model
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計算工具

SNVR495 — LP8863-Q1 External Components Calculation Tools

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產品
汽車 LED 驅動器
LP8863-Q1 — 具六個 150-mA 通道的 LP8863-Q1 車用顯示器 LED 背光驅動器
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
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參考設計

TIDA-01008 — 具有溫度感測功能的光學感測背光參考設計

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 (...)
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電路圖: PDF
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