Products
Power Management
Semtech SC627
Charge Pump LED Driver for 4BL + 700mA Flash + 2LDO + SemWire Interface
The SC627 is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLife™ technology. Performance is optimized for use in single-cell Li-ion battery applications.
Overview
Features
- 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 — 700mA max in flash mode, 250mA max continuous for spotlight
- Two user-configurable 100mA low-noise LDO regulators
- Charge pump frequency — 250kHz
- SemWire™ 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 ) — IQ = 100μA
- Low shutdown current — 0.1μA (typical)
- Ultra-thin package — 3mm x 3mm x 0.6mm
- Fully WEEE and RoHS compliant
Applications
- Cellular phone backlighting and flash
- PDA backlighting and flash
- Camera I/O and core power
Packaging
MLPQ-UT-20 (3 X 3 mm)
Order Codes
- SC627ULTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
Diagrams and Specs
Block Diagram
Click diagram to enlarge