Linear Technology LT3216
1A Low Noise High Current LED Charge Pump
| Part No. | LT3216 |
|---|---|
| Datasheet | LT3216 Download |
| Manufacturer |  Linear Technology |
| Description | 1A Low Noise High Current LED Charge Pump |
| Buy | Stock & Price |
FEATURES
s s s s s s s s s s s s s s U APPLICATIO S High Efficiency Operation: 1x, 1.5x or 2x Boost Modes with Automatic Mode Switching Ultralow Dropout ILED Current Control Output Current up to 1A Low Noise Constant Frequency Operation* Independent Low Current/High Current Programming and Enable Pins Wide VIN Range: 2.9V to 4.4V Open/Shorted LED Protection LED Disconnect in Shutdown Low Shutdown Current: 2.5µA 4% LED Current Programming Accuracy Automatic Soft-Start Limits Inrush Current No Inductors Tiny Application Circuit (All Components <1mm Profile) 3mm × 4mm 12-Lead DFN Package s s LED Torch/Camera Light Supply for Cell Phones, PDAs and Digital Cameras Generic Lighting and/or Flash/StrobeAPPLICATIONS
TYPICAL APPLICATIO C1 2.2µF C2 2.2µF C1+ 2.9V TO 4.4V CIN 2.2µF VIN LTC3216 C1– C2+ C2– CPO Torch Mode Efficiency vs VIN 100 90 EFFICIENCY (PLED/PIN) (%) 80 70 60 50 40 30 20 10 0 2.8 3.0 3.2 3.4 3.6 3.8 VIN (V) 4.0 4.2 4.4 PLED/PIN LUMILEDS LXCL-PWF1 VF = 3V TYP AT 200mA ILED = 20...
