NCV7694 Overview
Safety Controller for Infra-Red LED Illumination to plement the Image Sensor for Automotive Applications NCV7694 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.
NCV7694 Key Features
- Constant Current Output for LED String Drive
- FLASH Input Pin
- Open LED Diagnostic Detection
- Short LED to GND and VS Detection
- Safety Feature Prevent Being ON too long
- Safety Feature Prevent Being ON too frequently
- 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
NCV7694 Applications
- Constant Current Output for LED String Drive