Smart Backlight Control by White LED Driver: Ambient Light: and Proximity Sensor Reference Design
Description
This reference design conserves power and extends LCD backlight life by dynamically adjusting the LCD backlight brightness relative to the environment's ambient light levels. A capacitive proximity sensor saves power and increases LCD backlight life by waking up the system from sleep or standby mode when a person approaches.
Features
- Demonstrates EMI-resistant proximity detection using copper PCB materialHuman eye spectral response matching with strong infrared (IR) rejection (Dynamically adjusts backlight brightness on logarithmic scale based on how the human eye perceives brightnessEven LED illumination controlled through white-LED driver PWM without calibrationIntegrated backlight UV filter enables good performance in outdoor applications
Applications
- Actuator
- Oscilloscopes & digitizers
- CPAP machine
- LED signage
- Digital multimeter (DMM)
- Flat panel
- Spectrometer
- Thermostat
- HVAC controller
- Electronic thermometer
- Fitness machine
- Wearable fitness & activity monitor
- Software defined radio
- Aircraft cockpit display
- Interconnect/distribution box
- Lab & field Instrumentation
- Automotive test
- Fire alarm control panel (FACP)
- HVAC fluid leak detector
- Beauty & grooming
- AC charging (pile) station
- Laser distance meter
- Power quality analyzer
- Solar charge controller
- Remote power distribution automation
- Off-highway vehicles sensor
- Asset tracker
- Signal generator
- Source measurement unit (SMU)
- Programmable DC power supply
Product Categories
- Sensors