Semtech Corporation SC658
The SC658 is a high efficiency charge pump LED drivFEATURES
● Input supply voltage range — 2.9V to 5.5V● Very high efficiency charge pump driver system with three modes — 1x, 1.5x and 2x
● Four programmable current sinks — 0mA to 25mA
● Up to three LED grouping options
● Fade-in/fade-out feature for main LED bank
● Charge pump frequency — 250kHz
● SemPulse single wire interface
● Backlight current accuracy — ±1.5% typical
● Backlight current matching — ±0.5% typical
● LED float detection
● Automatic sleep mode (LEDs off ) — IQ = 60µA (typ.)
● Shutdown current — 0.1µA (typical)
● Ultra-thin package — 2 x 2 x 0.6 (mm)
● Fully WEEE and RoHS compliant
APPLICATIONS
● Cellular phones, smart phones, and PDAs● LCD modules
● Portable media players
● Digital cameras
● Personal navigation devices
● Display/keypad backlighting and LED indicators SC658 Backlight Driver for 4 LEDs with SemPulseTM Interface
DESCRIPTION