LTC1775CS#PBF

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The LTC1775CS#PBF (gate driver 6 to 55V operating range) belongs to the DC DC switching controllers within the PMIC - voltage regulators family, which control the on-time and the frequency of DC-DC converters. It is suitable for applications requiring a wide operating voltage range such as automotive, industrial, telecom and computer related. The LTC1775CS#PBF can provide up to 350kHz frequency for use in high switching frequency designs, enabling smaller inductors, higher efficiency designs and higher power density.

The LTC1775CS#PBF comes with an integrated high voltage MOSFET driver, which can optimize the efficiency of the switching converter in a wide range of operations from low to high frequency, by providing a gate drive current from 4A. The gate driver has an adjustable deadtime, which allows designers to improve the accuracy for controlling the current, eliminates the possibility of hard switching and thus reduces the switching losses in the converter.

The LTC1775CS#PBF has a slew rate control, which allows designers to adjust the switching frequency and the rise time to avoid overshoot. As a result, it enables better control and real time drive capability in applications such as electronic test equipment and switching power supplies.

In addition, the LTC1775CS#PBF comes with latch cycle current limiting, which is an important feature that helps designers in avoiding the breakdown voltage of the inductor. The design also features foldback current limiting to protect the switch MOSFET in cases of an output over current.

The device also has a programmable soft start, which reduces the output current inrush and allows for controlled start up of the converter. This feature is useful for applications where the outputs must be ramped up slowly, such as automotive applications.

The LTC1775CS#PBF also includes an under voltage lockout (UVLO) feature, which helps to avoid loss due to standby current. The UVLO feature can be set to several different threshold voltages to suit the system needs. Additionally, the LTC1775CS#PBF has an over temperature protection (OTP), which is an important feature for protecting the system from extreme temperatures.

In summary, the LTC1775CS#PBF provides wide operating voltage range, high gate drive current, adjustable deadtime, slew rate control, latch cycle current limiting, foldback current limiting, programmable soft start, undervoltage lockout, and over temperature protection. These features enable designers to implement the most efficient and robust switching converter designs, with the highest power density achievable.

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