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LP8867-Q1

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具有電力線 FET 保護的高集成度 4 通道 120mA 汽車類 LED 驅動器

產品詳情

Number of channels 4 Topology Boost with Current Sink, SEPIC Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 45 Iout (max) (A) 0.48 Iq (typ) (mA) 4.5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Global dimming, Integrated Switch, LED Open Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
Number of channels 4 Topology Boost with Current Sink, SEPIC Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 45 Iout (max) (A) 0.48 Iq (typ) (mA) 4.5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Global dimming, Integrated Switch, LED Open Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm2 6.5 x 6.4
  • AEC-Q100 Qualified for automotive applications:
    • Device temperature grade 1:
      –40°C to +125°C, TA
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 3-, 4-Channel 120-mA current sinks
    • High dimming ratio of 10 000:1 at 100 Hz
    • Current matching 1% (typical)
    • LED String current up to 120 mA per channel
    • Outputs can be combined externally for higher current per string
  • Integrated boost and SEPIC converter for LED string power
    • Input voltage operating range 4.5 V to 40 V
    • Output voltage up to 45 V
    • Integrated 3.3-A Switch FET
    • Switching frequency 300 kHz to 2.2 MHz
    • Switching synchronization input
    • Spread spectrum for lower EMI
  • Fault detection and protection
    • Fault output
    • Input voltage OVP, UVLO and OCP
    • Boost block SW OVP and output OVP
    • LED open and short fault detection
    • Power-Line FET control for battery bus protection
    • Automatic LED current reduction with external temperature sensor
    • Thermal shutdown
  • AEC-Q100 Qualified for automotive applications:
    • Device temperature grade 1:
      –40°C to +125°C, TA
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 3-, 4-Channel 120-mA current sinks
    • High dimming ratio of 10 000:1 at 100 Hz
    • Current matching 1% (typical)
    • LED String current up to 120 mA per channel
    • Outputs can be combined externally for higher current per string
  • Integrated boost and SEPIC converter for LED string power
    • Input voltage operating range 4.5 V to 40 V
    • Output voltage up to 45 V
    • Integrated 3.3-A Switch FET
    • Switching frequency 300 kHz to 2.2 MHz
    • Switching synchronization input
    • Spread spectrum for lower EMI
  • Fault detection and protection
    • Fault output
    • Input voltage OVP, UVLO and OCP
    • Boost block SW OVP and output OVP
    • LED open and short fault detection
    • Power-Line FET control for battery bus protection
    • Automatic LED current reduction with external temperature sensor
    • Thermal shutdown

The LP8867-Q1, LP8869-Q1 is an automotive highly-integrated, low-EMI, easy-to-use LED driver with DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four or three high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED forward voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP886x-Q1 to avoid disturbance for sensitive frequency band.

The input voltage range for the LP886x-Q1 is from 4.5 V to 40 V to support automotive start-stop and load dump condition. The LP886x-Q1 integrates extensive fault detection features.

The LP8867-Q1, LP8869-Q1 is an automotive highly-integrated, low-EMI, easy-to-use LED driver with DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four or three high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED forward voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP886x-Q1 to avoid disturbance for sensitive frequency band.

The input voltage range for the LP886x-Q1 is from 4.5 V to 40 V to support automotive start-stop and load dump condition. The LP886x-Q1 integrates extensive fault detection features.
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LP8867C-Q1 正在供貨 高集成度 4 通道 120mA 汽車類 LED 驅動器 LP8867-Q1, LP8867C-Q1, LP8869-Q1, LP8869C are hardware and software compatible

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類型 標題 下載最新的英語版本 日期
* 數據表 LP8867-Q1, LP8869-Q1 Low EMI Automotive LED Driver with 4-, 3- Channels 數據表 (Rev. B) PDF | HTML 2020年 1月 16日
應用手冊 使用 LP8867-Q1 和 TMP61-Q1 實現模擬熱折返 英語版 PDF | HTML 2021年 8月 10日
白皮書 Selecting Functional Safety Products for Automotive and Industrial ApplicationsK 2020年 6月 9日
白皮書 Selecting Functional Safety Products for Automotive and Industrial ApplicationsN 2020年 6月 9日
白皮書 簡化汽車和工業中的功能性安全認證 英語版 2020年 6月 9日
功能安全信息 LP886x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) 2020年 2月 14日
應用手冊 Some Guidelines and Tips for the LED Driver Application 2019年 8月 14日
EVM 用戶指南 LP8867-Q1 Evaluation Module User's Guide 2018年 12月 9日

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評估板

LP8867Q1EVM — 適用于汽車照明的四通道 LED 驅動器評估模塊；

LP8867Q1EVM 幫助設計人員評估 LP8867/9-Q1 器件（用于汽車照明的高性能 LED 驅動器）的特性、操作和使用情況。LP8867/9-Q1 器件是一款易于使用的 LED 驅動器，具有集成式直流/直流轉換器。該器件還具有四個/三個可由 PWM 輸入信號控制的 120mA 高精度灌電流，并集成了豐富的故障檢測功能。
用戶指南: PDF
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  • MSL 等級/回流焊峰值溫度
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  • 持續可靠性監測
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