Datasheet Linear Technology LTC3217EUD#PBF — 数据表

LTC3217
600mA Low Noise
Multi-LED Camera Light
Charge Pumps
DESCRIPTION FEATURES Charge Pump Provides High Efficiency with
Automatic Mode Switching
Multimode Operation: 1x, 1.5x, 2x
Four Low Dropout LED Outputs
Up to 600mA Total Output Current
Independent Torch and Flash ISET and Enable Pins
Low Noise Constant Frequency Operation*
PWM Brightness Control via the EN2 Pin
Low Shutdown Current: 4ОјA
Internal Soft-Start Limits Inrush Current During
Start-Up and Mode Switching
Open/Short LED Protection
No Inductors
(3mm x 3mm) 16-Lead QFN Plastic Package APPLICATIONS
n Multi-LED Camera Light Supply for Cellphones/
DSCs/PDAs L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. *Protected by U.S. Patents including
6411531. The LTCВ®3217 is a low noise charge pump DC/DC converter
designed to power four high current LEDs. The LTC3217 …