LTC3805IMSE#PBF

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The LTC3805IMSE#PBF, part of the Analog Devices’ DC DC switching controller family, is a current-mode, high-performance synchronous buck regulator DC to DC converter offering several features in a very small footprint. It is an ideal product for powering high-density and high-efficiency power designs. This DC to DC controller ensures smooth and clean transition between the input and output voltage. With the ability to regulate the current flowing through the inductor up to a maximum of 3A, and switching up to 1MHz, the LTC3805IMSE#PBF provides very efficient and high power density in order to reduce system noise and power losses in the power supply.

The LTC3805IMSE#PBF features a constant on-time current-mode control, which eliminates instability problems associated with fixed frequency current-mode controllers. This greatly reduces the time it takes to design a power supply while simplifying the design process. The constant on-time current mode control also eliminates the need for compensation to be done manually.

The LTC3805IMSE#PBF’s on-time control circuit includes an internal low-voltage comparator with adjustable thresholds that fires during each cycle and gives the maximum stability margin. This ensures the converter always operates within its stable region and provides an optimum ratio of load and line power loss. The LTC3805IMSE#PBF also works with a minimum on-time of 20ns, providing very low output ripple even at high switching frequencies.

Additionally, the LTC3805IMSE#PBF provides a high-sensitivity voltage sense amplifier that measures the differential voltage between the output and the feedback voltage. This controller is also equipped with dynamic thermal overload protection and input undervoltage as well as output overvoltage protection. The LTC3805IMSE#PBF lets users customize their design with the help of external components; there is a range of available resistors and capacitors for fast and easy design.

The LTC3805IMSE#PBF operates over an input voltage range of 6V to 18V and provides a constant output voltage with 1% accuracy. It is offered in a small 3mm x 3mm MSOP-10 package, making it an ideal product for designing applications with minimal space requirements. The LTC3805IMSE#PBF is ideal for powering a variety of low-voltage systems such as LEDs, cellular handsets, automotive, communications, industrial and consumer products, portable devices and battery powered systems.

In conclusion, the LTC3805IMSE#PBF is a versatile high-performance synchronous buck regulator DC to DC converter which offers great features and low power losses in a very small package. Its high-sensitivity voltage sense amplifier, low-voltage comparator and adjustable thresholds ensure stable operation of the converter. Its fast, easy and flexible design allows usage of customized external components, making it ideal for low-voltage systems.

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