Product Highlight

Distribution Spotlight
Innovations Embedded
Ambient Light Sensor ICs for
LCD Display Backlighting
ROHM ambient light sensor (ALS) ICs (BH16xx
analog/BH17xx digital) are designed to control the
brightness of LED-backlit LCD displays based on ambient
light for optimum visibility and energy efficiency. These
compact ALS ICs are the ideal choice for LCD-equipped
portable devices as well as LCD monitors and
high-defenition (HDTV) backlight control.
Applications
Key Features
LCD-equipped devices
• Mobile phones
• Digital cameras
• Video players
• Notebook PCs
• Car navigation systems
• LCD TVs
• LCD monitors/displays
• Higher light-sensing accuracy: ±15% compared to competitive
devices that range from ±30% to ±55%
• More stable ambient light detection: ±10% maximum difference
regardless of light source (vs. comparable products with up to 4x the
variation)
• Wide operating temperature range: -40°C to 85°C
• Wide light detection range: up to 100,000 lux
• Small, surface-mount package
• RoHS-compliant and halogen-free
Pricing
Quantity per reel: 3,000 pieces
Price: $0.58 – $2.25
Analog Output
Digital Output (up to 16bit)
Brightness Control
Microcontroller
or
Baseband Processor
•DC
•PWM
•I2C
I2C
I/F
ALS (BH16xx)
ADC
IOUT
GC2
Driver
S/W
more info:
click here
GC1
GC2
LED
Driver
Microcontroller
or
Baseband Processor
LED
Driver
Light
Driver
S/W
SCL
ALS (BH17xx)
SDA
SCLGC2
SDA
Light
Gain Control
visit us:
www.rohm.com