NCV7694: Safety Controller for Infra-Red LED Illumination to Complement the Image Sensor for Automotive Applications

Datasheet: Safety Controller for Infra-Red LED Illumination to Complement the Image Sensor for Automotive Applications
Rev. 2 (205kB)
製品概要
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The NCV7694 is a device which can drive a string of infra−red LEDs using an external mosfet. The IR LEDs are used to illuminate the surroundings of the image sensor. Since these LEDs can damage the end users’ eyes, the power feed to the LEDs needs to be turned off during a fault condition.
The NCV7694 driver features prevents the IR LEDs from being ON too long due to an inappropriate exposure time or being turned on too frequently using external resistors. The value of the RETL resistor defines the maximum TON time of the emitted light intensity and the value of the RFRL resistor defines the maximum frequency of the FLASH signal from the image sensor. A LED driver with hardware interlocks helps protect the users’ eyes in cases where the control signal has failed or a fault in the LED power path has occurred. LED brightness level is easily programmed using an external resistor in series with the mosfet transistor. The device can also detect Open Load, Short Circuit to GND and VS. Faults are reported to the DIAG pin, which can directly disable the DC/DC converter to prevent possible damage. The device is available in 10 pin DFN package.
特長   利点
     
  • Safety Feature Prevent Being ON too long
 
  • Provides eye-safety functionallity
  • Safety Feature Prevent Being ON too frequently
 
  • Provides eye-safety functionallity
  • Constant Current Output for LED String Drive
   
  • FLASH Input Pin
   
  • Open LED Diagnostic Detection
   
  • Short LED to GND and VS Detection
   
  • External Resistor Defining max ON time
   
  • External Resistor Defining min OFF time
   
  • Protection against Short to Ground and Open of the External Resistors
   
  • Detection and Protection Against Under−Voltage and over Temperature
   
  • AEC−Q100 Qualified and PPAP Capable
   
  • ASIL−A safety design, ISO26262 compliant
   
  • 10 Pin Packaging with Wettable Flank for Enhanced Optical Inspection
   
アプリケーション   最終製品
  • In−Cabin Monitoring Sensor for DMS and OMS
  • Infrared Illumination for Automotive Cameras
  • Machine Vision Systems
  • Surveillance Systems
 
  • Automotive
  • Driver Monitoring System
  • Occupant Monitoring System
技術資料 & デザイン・リソース
データシート (1) 評価ボード文書 (11)
パッケージ図 (1)  
評価/開発ツール情報
製品 状態 Compliance 簡単な説明 アクション
NCV7694GEVB Active
Pb-free
FLASH IR LED DRV Evaluation Board
STR-DMS-NCV7694-GEVB Active
Pb-free
NIR LED driver for Driver Monitoring Systems
STR-DMS-NCV7694-GEVK Active
Pb-free
NIR LED driver for Driver Monitoring Systems
Availability & Samples
Specifications
製品
状態
Compliance
内容
外形
MSL
梱包形態
予算 価格/Unit
タイプ
Case Outline
タイプ
Temperature
タイプ
数量
NCV7694MW0R2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
ISO 26262
NCV7694, Safety Controller for Infra-Red LED Illumination to Complement the Image Sensor for Automotive Applications DFNW-10 507AG 1 260 Tape and Reel 3000 $0.3792
マーケットリードタイム(週) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
VI Max (V)
IO Max (mA)
LEDs in Series, Max #
LEDs in Parallel, Max #
Package Type
Case Outline
507AG   
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