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)
Product Overview
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Product Change Notification
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.
Features   Benefits
     
  • 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
   
Applications   End Products
  • 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
Technical Documentation & Design Resources
Data Sheets (1) Evaluation Board Documents (11)
Package Drawings (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
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
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
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
Market Leadtime (weeks) : 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 Outlines
507AG   
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