FEATURES
DESCRIPTION
Input supply voltage range — 3.0V to 5.5V Charge pump modes — 1x, 1.5x and 2x Four programmable current sinks with 32 steps from 0.5mA to 25mA Flash LED — 400mA max in flash mode, 250mA max continuous for spotlight Two programmable 200mA low-noise LDO regulators Charge pump frequency — 250kHz SemWireTM single wire interface — up to 75kbit/s Backlight current accuracy ±1.5% typical Backlight current matching ±0.5% typical Programmable fade-in/fade-out for main backlight External flash control pin to sync with camera Optional 1s flash time out Automatic sleep mode (LEDs off ) — I = 100μA Q Low shutdown current — 0.1μA (typical) Ultra-thin package — 3mm x 3mm x 0.6mm Lead-free and halogen-free WEEE and RoHS compliant APPLICATIONS
Cellular phone backlighting and flash PDA backlighting and flash Camera I/O and core power Performance is optimized for use in single-cell Li-ion battery applications. The load and supply conditions determine whether the charge pump operates in 1x, 1.5x, or 2x mode.
Semtech Corporation
