Semtech SC667
7 LED Light Management Unit Automatic Dropout Prevention, Ambient Light Sense Input, PWM Dimming, and 4 LDOs

Not recommended for new designs.
Overview
Features
- Seven 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 Prevention) for backlights
- ALS (Ambient Light Sense) option sets the backlight brightness according to ambient lighting conditions
- I2C Bus fast mode and standard mode
- IRQ (Interrupt request) — open-drain output indicates a change of state for the ALS
- 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.
Applications
- 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
- SC667EVB
- SC667ULTRT - Lead-free, WEEE and RoHS compliant and halogen-free