LTC3453 - Synchronous Buck-Boost High Power White LED Driver

The LTC3453 is a synchronous buck-boost DC/DC converter optimized for driving up to 4 white LEDs at a combined current of up to 500mA from a single Li-Ion battery input. The Regulator operates in either synchronous buck, synchronous boost, or buck-boost mode, depending on input voltage and LED maximum forward voltage. Optimum efficiency is achieved using a proprietary architecture that determines which LED requires the largest forward voltage drop at its programmed current, and regulates the common output rail for lowest dropout. Efficiency of 90% CAN be achieved over the entire usable range of a Li-Ion battery (2.7V to 4.2V).
LED current is programmable to one of four levels (including shutdown) with dual current setting resistors and dual enable pins. In shutdown, the supply current is only 6A.
A high constant operating frequency of 1MHz allows the use of a small external inductor. The LTC3453 is offered in a low profile (0.75mm) thermally enhanced 16-lead (4mm x 4mm) QFN package.
By Linear Technology Corporation
LTC3453 's PackagesLTC3453 's pdf datasheet

LTC3453 Pinout, Pinouts
LTC3453 pinout,Pin out
This is one package pinout of LTC3453,If you need more pinouts please download LTC3453's pdf datasheet.

LTC3453 Application circuits
LTC3453 circuits
This is one application circuit of LTC3453,If you need more circuits,please download LTC3453's pdf datasheet.

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