LTC3217 - 600mA Low Noise Multi-LED Camera Light Charge Pumps

The LTC3217 is a low noise Charge Pump DC/DC converter designed to power four high current LEDs The LTC3217 requires only four small ceramic capacitors and two current set resistors to form a complete LED power supply and current controller.
Built-in soft-start circuitry prevents excessive inrush current during start-up and mode changes. High switching frequency enables the use of small external capacitors. Independent high and low current settings are programmed by two external resistors. Shutdown mode and current output levels are selected via two Logic inputs.
The current through the LEDs is programmed via ISET1 and ISET2. In addition, the brightness CAN be controlled by pulse width modulation of the EN2 pin.
The Charge Pump optimizes efficiency based on the voltage across the LED current sources. The part powers up in 1x mode and will automatically Switch to boost mode whenever any enabled LED current source begins to enter dropout. The first dropout switches the part into 1.5x mode and a subsequent dropout switches the part into 2x mode. The LTC3217 resets to 1x mode whenever the part is shut down.
The LTC3217 is available in a low profile 16-lead (3mm 3mm 0.75mm) QFN package.
By Linear Technology Corporation
LTC3217 's PackagesLTC3217 's pdf datasheet

LTC3217 Pinout, Pinouts
LTC3217 pinout,Pin out
This is one package pinout of LTC3217,If you need more pinouts please download LTC3217's pdf datasheet.

LTC3217 Application circuits
LTC3217 circuits
This is one application circuit of LTC3217,If you need more circuits,please download LTC3217's pdf datasheet.

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