The RLT IC (Rain Light Tunnel Sensor) is intended for control-ling an optical sensor unit in automotive wiping systems or in industrial camera and window systems. It provides two em-bedded slew rate controlled LED drivers... read more


  • Front end optical rain sensor signal processor
  • Four input channels for ambient light measurements
  • High sensitivity, no total reflection needed
  • Very high robustness against ambient influences like sun light, aging and dirt
  • Two embedded LED drivers, driving up to 40mA
  • Provides a rain drop signal via the WS pin • SPI interface
  • Temperature sensor
  • Extensive diagnosis during operation
  • Low bill of materials due to few external components
  • AEC-Q100 qualification


Document Description Type
Info Sheet PDF 162 kB
Product Flyer Automotive Gesture Control PDF 5,8 MB

Application diagram


  • Optical Rain Sensor (wiping systems)
  • Industrial camera and window systems
  • Ambient light sensor (measurement) to control
    - Headlights / lights
    - Head-up displays
    - Air conditioning

Order Information

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Part No. Temp. Range Package Order No.
E527.04 -40°C to +105°C QFN20L4 E52704A52C


Part No. Description Board type Order No.
E527.04/E527.05 Evaluation Kit Evaluation Board KI1210005

*)Without LED current and photo diode current

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