LTC3891HFE#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LTC3891HFE#PBF is a DC-DC switching controller that belongs to a family of voltage regulators known as PMIC (power management integrated circuit). It is a high-frequency, current-mode, monolithic switching regulator that operates up to 4MHz. The regulator offers adjustable frequency current-mode control and integrates a high-side MOSFET and driver, 80V switching regulator start-up circuit, 0.6V reference, mode control with dynamic voltage scaling, ramp comparator and integrated loop compensation.

The LTC3891HFE#PBF has numerous advantages compared to other current mode regulators such as higher efficiency due to its high frequency operation, more accurate regulation, improved load regulation and fast transient response. Moreover, its built-in start-up circuit and dynamic voltage scaling provide high performance, wide output range and customizable features.

The applications of the LTC3891HFE#PBF are wide due to its high flexibility, robustness and low cost. It is best-suited for applications such as DC-DC converters, buck and boost regulators, LED drivers, telecom inverters, distributed power supplies and general-purpose power supplies. The device is also well-suited for portable and automotive applications due to its small size, wide operating temperature range and low quiescent current.

The operating principle of the LTC3891HFE#PBF is based on current-mode control technique. The device uses a voltage comparator that compares the voltage at the current-sense pin with a reference voltage. The difference between the two is then used to adjust the current-sense terminal voltage, thus modifying the inductor current. This creates a feedback loop that modulates the voltage of the output to the programmed value.

The LTC3891HFE#PBF also includes a unique ramp comparator that allows the device to modulate the inductor current efficiently when the voltage at the current-sense terminal is repeatedly above or below a predetermined value. This feature helps the device to maintain a tight output voltage regulation over a wide load range. The device also allows the user to customize the output voltage range and the features offered by the device.

Overall, the LTC3891HFE#PBF is a highly versatile, low cost DC-DC switching controller that delivers high efficiency, improved load regulation and fast transient response. It is widely used in a variety of applications due to its flexible features and wide operational temperature range. The device is also well-suited for portable and automotive applications due to its small size, wide operating temperature range and low quiescent current.

The specific data is subject to PDF, and the above content is for reference