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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 mm × 6.4 mm)
  • 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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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels datasheet (Rev. B) PDF | HTML 2018/7/2
應用說明 LP886x-Q1 Feedback Resistor Design Considerations PDF | HTML 2021/5/12
功能安全資訊 LP8863-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution PDF | HTML 2020/4/27
應用說明 LP8863-Q1 Automatic String Detection Deep Dive PDF | HTML 2020/4/6
應用說明 Some Guidelines and Tips for the LED Driver Application 2019/8/14
白皮書 Powering automotive displays to create interactive driving experiences 2017/12/21
應用說明 LP8863-Q1 External Component Selection Guide (Rev. A) PDF | HTML 2017/7/24
應用說明 PCB Layout Guideline for Automotive LED Drivers 2017/4/7

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

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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模擬型號

LP8863-Q1 PSpice Transient Model

SNVMB63.ZIP (283 KB) - PSpice 模型
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計算工具

SNVR495 — LP8863-Q1 External Components Calculation Tools

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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

此參考設計可根據環境光強度調整背光亮度，以節省電力並延長 LCD 和背光使用壽命。CapTIvate 滑動觸控可根據使用者的亮度偏好進行亮度微調。LCD 顯示器對溫度的敏感需求由遠端溫度感測器進行監控，啟用過熱時會自動關機以保護系統。
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HTSSOP (DCP) 38 Ultra Librarian
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