LTC3428EDD#TRPBF

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The LTC3428EDD#TRPBF is a DC/DC step-down switching regulator with integrated high and low-side switches. This device is ideal for providing low noise and efficient operation in applications such as automotive, industrial, and medical. It is capable of providing output currents up to 1A and features adjustable headroom and tracking. The integrated low-side MOSFET works to maintain low dropout voltage during light loads and the high-side N-channel switch helps maintain high efficiency during heavy loads. The device also features programmable current foldback protection and fault indication.

Application Field

The LTC3428EDD#TRPBF can be used in a variety of applications requiring efficient power regulation including automotive, industrial, and medical equipment. It is capable of providing output currents up to 1A and is designed for low dropout operation. It is particularly useful in automotive applications where the device can manage power from the battery in order to maintain efficiency. The device also has a high-side N-channel switch to help manage heavy loads, and operates over a wide temperature range for reliable performance.

Working Principle

The LTC3428EDD#TRPBF is a DC/DC step-down switching regulator with integrated high and low-side switches. Its working principle is based on the operation of a switch-mode power supply (SMPS) where a switch is used to control the energy transfer from the input to the output voltage. In this instance, the switch is an internal high- and low-side MOSFET combination, which is driven by an external PWM signal. The PWM signal is dependent on an internal error amplifier, which compares the feedback voltage to a reference voltage. When the feedback voltage is lower than the reference, more power is transferred to the output, and vice versa. The integrated current foldback protection is based on sensing the output current, and limiting the output current if it exceeds the programmed threshold.

Overall, the LTC3428EDD#TRPBF is capable of providing efficient power regulation in a variety of applications including automotive, industrial, and medical equipment. It is designed with a high-side N-channel switch to help manage heavy loads, and operates over a wide temperature range. The device also features programmable current foldback protection and fault indication, providing an easily integrated and cost-effective solution for low-noise and efficient operation.

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