LTC3809 - No Rsense, Low EMI, Synchronous DC/DC Controller

The LTC3809 is a synchronous Step-down Switching Regulator controller that drives external complementary Power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for a Current Sense resistor and improves efficiency.
For noise sensitive applications, the LTC3809 CAN be externally synchronized from 250kHz to 750kHz. Burst Mode is inhibited during synchronization or when the SYNC/ MODE pin is pulled low to reduce noise and RF interference. To further reduce EMI the LTC3809 incorporates a novel spread spectrum frequency modulation technique.
Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation, extending operating time in battery-powered systems.
The switching frequency CAN be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors.
The LTC3809 is available in the tiny footprint thermally enhanced DFN and 10-lead MSOP packages.
By Linear Technology Corporation
LTC3809 's PackagesLTC3809 's pdf datasheet
LTC3809EDD-PBF DFN
LTC3809EDD-TRPBF DFN
LTC3809EDD-1-PBF DFN
LTC3809EDD-1-TRPBF DFN
LTC3809EMSE MSOP
LTC3809EMSE-PBF MSOP
LTC3809EMSE-TR MSOP
LTC3809EMSE-TRPBF MSOP
LTC3809EMSE-1 MSOP
LTC3809EMSE-1-PBF MSOP
LTC3809EMSE-1-TR MSOP
LTC3809EMSE-1-TRPBF MSOP




LTC3809 Pinout, Pinouts
LTC3809 pinout,Pin out
This is one package pinout of LTC3809,If you need more pinouts please download LTC3809's pdf datasheet.

LTC3809 Application circuits
LTC3809 circuits
This is one application circuit of LTC3809,If you need more circuits,please download LTC3809's pdf datasheet.


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