LTC3549 - 250mA Low VIN Buck Regulator In 2mm X 3mm DFN

The LTC3549 is a high efficiency, monolithic synchronous buck Regulator using a constant-frequency, current mode architecture. The output voltage is adjusted via an external resistor divider.
A fixed switching frequency of 2.25MHz is supported. This switching frequency allows the use of small surface mount inductors and capacitors, including ceramics.
Supply current during Burst Mode operation is only 50A dropping to < 1A in shutdown. The 1.6V to 5.5V input voltage range makes the LTC3549 ideally suited for single cell Li-Ion, Li-Metal and 2-cell alkaline, NiCd or NiMH battery-powered applications. 100% duty cycle capability provides low dropout operation, extending battery life in portable systems. Burst Mode operation CAN be user-enabled, increasing efficiency at light loads, further extending battery life.
The internal synchronous Switch increases efficiency and eliminates the need for an external Schottky Diode Internal soft-start offers controlled output voltage rise time at startup without the need for external components.
By Linear Technology Corporation
LTC3549 's PackagesLTC3549 's pdf datasheet
LTC3549EDCB-TRMPBF DFN
LTC3549EDCB-TRPBF DFN




LTC3549 Pinout, Pinouts
LTC3549 pinout,Pin out
This is one package pinout of LTC3549,If you need more pinouts please download LTC3549's pdf datasheet.

LTC3549 Application circuits
LTC3549 circuits
This is one application circuit of LTC3549,If you need more circuits,please download LTC3549's pdf datasheet.


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