LTC3447 - I2C Controllable Buck Regulator In 3mm × 3mm DFN

The LTC3447 is a high efficiency monolithic synchronous current mode buck Regulator Using an I2C Interface the output voltage CAN be set between 0.69V and 2.05V using an internal 6-bit DAC The buck Regulator has optional external feedback resis-tors that CAN be used for setting the initial start up voltage. The feedback Voltage Reference for this start-up option is 0.6V. Once the voltage DAC is updated via the I2C the buck Regulator switches from external to internal feedback resistors. When there are no external resistors, the default start-up voltage is 1.38V.
The switching frequency is internally set at 1MHz, allowing the use of small surface mount inductors and capacitors.
In Burst Mode operation, supply current is only 33A, dropping to <1A in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3447 ideally suited for single cell Li-Ion battery-powered applications. 100% duty cycle capability provides low dropout operation, extending battery life in portable systems. Automatic Burst Mode operation increases efficiency at light loads, further extending battery life.
The internal synchronous Switch increases efficiency and eliminates the need for an external Schottky Diode
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.
By Linear Technology Corporation
LTC3447 's PackagesLTC3447 's pdf datasheet

LTC3447 Pinout, Pinouts
LTC3447 pinout,Pin out
This is one package pinout of LTC3447,If you need more pinouts please download LTC3447's pdf datasheet.

LTC3447 Application circuits
LTC3447 circuits
This is one application circuit of LTC3447,If you need more circuits,please download LTC3447's pdf datasheet.

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