产品
电源管理
Semtech SC668
Eight LED Light Management Unit Automatic Dropout Prevention, Ambient Light Sense Input, PWM Dimming, and four LDOs
The SC668 is a highly integrated light management unit that provides programmable current for up to eight LED current sinks. Four LED banks are provided to allow settings for various LED zones or indicators. Four low-noise LDOs with programmable outputs ranging from 1.2V to 3.3V and 200mA maximum output current are also included.
概览
Features
- Eight LED backlight sinks with 32 current settings from — 0mA to 25mA
- Up to four LED backlight banks
- Lighting effects — fade-in/fade-out, breathe, blink, auto-dim full, and auto-dim partial functions
- ADP (Automatic Dropout Protection) for backlights
- ALS (Ambient Light Sense) option sets the backlight brightness according to ambient lighting conditions
- I2C Bus fast mode and standard mode
- Backlight current accuracy — ± 1.5% typical
- Backlight current matching — ± 0.5% typical
- Four programmable 200mA low-noise LDO regulators
- PWM interface (200Hz to 50kHz) with internal digital low-pass filter
- Automatic sleep mode with all LEDs off
- Shutdown current — 0.1μA typical
- Ultra-thin package — 3 x 3 x 0.6 (mm)
- Lead-free and halogen-free
- WEEE and RoHS compliant
I2C logo is a trademark of NXP B.V.
应用
- Cellular phones, smart phones, and PDAs
- LCD modules
- Portable media players and digital cameras
- Personal navigation devices
- Display/keypad backlighting and LED indicators
Packaging
- MLPQ-UT-20
Order Codes
- SC668EVB
- SC668ULTRT - Lead-free, WEEE and RoHS compliant and halogen-free
Diagrams and Specs
Block Diagram
Click diagram to enlarge