LTC1773 - Synchronous Step-Down DC/DC Controller

The LTC1773 is a current mode synchronous buck Regulator controller that drives external complementary Power MOSFETs using a fixed frequency architecture. The operating supply range is from 2.65V to 8.5V, making it suitable for 1- or 2-cell lithium-ion battery powered applications. Burst Mode operation provides high efficiency at low load currents. 100% duty cycle provides low dropout operation which extends operating time in battery-operated systems.
The operating frequency is internally set at 550kHz, allowing the use of small surface mount inductors. For switching-noise sensitive applications, it CAN be synchronized up to 750kHz. Peak current limit is user programmable with an external high side sense resistor. A SYNC/FCB control pin guarantees regulation of secondary windings regardless of load on the main output by forcing continuous operation. Burst Mode operation is inhibited during synchronization or when the SYNC/FCB pin is pulled low to reduce noise and RF interference. Soft-start is provided by an external capacitor.
Synchronous rectification increases efficiency and eliminates the need for a Schottky Diode saving components and board space. The LTC1773 comes in a 10-lead MSOP package.
By Linear Technology Corporation
LTC1773 's PackagesLTC1773 's pdf datasheet
LTC1773EMS MSOP
LTC1773EMS-PBF MSOP
LTC1773EMS-TR MSOP
LTC1773EMS-TRPBF MSOP




LTC1773 Pinout, Pinouts
LTC1773 pinout,Pin out
This is one package pinout of LTC1773,If you need more pinouts please download LTC1773's pdf datasheet.

LTC1773 Application circuits
LTC1773 circuits
This is one application circuit of LTC1773,If you need more circuits,please download LTC1773's pdf datasheet.


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