LTC3835IFE#PBF

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LTC3835IFE#PBF Application Field and Working Principle

The LTC3835IFE#PBF is a 3A synchronous step-down DC-DC switching controller with integrated MOSFET drivers. This controller is designed to operate with linear, lowside and highside MOSFETs. Its wide input voltage range of 4.5V to 32V is ideal for 12V and 24V automotive and industrial applications. The controller is designed with Burst Mode operation, which reduces quiescent current draw, resulting in greater power efficiency. Its advanced current mode control provides fast transient response and tight output voltage regulation. The controller also features comprehensive fault protection.

The LTC3835IFE#PBF is designed to operate in a synchronous Buck configuration using typical external components.

In a synchronous Buck configuration, an input voltage is applied to an inductor of appropriate value. The output voltage of the circuit is set by a resistor divider connected to the control pin of the IC. An N-channel MOSFET is used to control the output voltage. When the MOSFET is on, it creates a path for current to flow from the input voltage to the output voltage, which allows the inductor to be charged. When the MOSFET is off, the current stored in the inductor is released to the output voltage, causing a decrease in the output voltage. The controller regulates the on and off periods of the MOSFET to ensure the desired output voltage is maintained. The MOSFET can be driven by either the high side or low side driver, depending on the application.

Some applications of the LTC3835IFE#PBF are automotive and industrial applications that require power conversion from a higher input voltage to a lower output voltage. The controller is also used in distributed power supply and digital power supply, as well as in power supplies with high current requirements. The controller is also suitable for applications such as server power supplies, point of load converters, and power amplifier applications.

The LTC3835IFE#PBF features a wide input voltage range of 4.5V to 32V, enabling it to be used in a variety of applications. Its wide operating range allows it to operate efficiently at both light and heavy load conditions. It also features maximum switching frequency of 600kHz, ideal for applications requiring a high-frequency switching power supply. Its Burst Mode feature enables the controller to operate with reduced standby power, enabling better power efficiency. The controller also features over-temperature protection and over-current protection, ensuring safe operation.

In conclusion, the LTC3835IFE#PBF is a versatile step-down DC-DC switching controller. It is suitable for automotive and industrial applications that require power conversion from a higher input voltage to a lower output voltage. Its wide input voltage range and high-frequency switching makes it ideal for distributed power supply and digital power supply. Its wide operating range and Burst Mode feature enables the controller to maintain high power efficiency at both light and heavy load conditions. Comprehensive fault protection makes it a safe and reliable choice for automotive and industrial applications.

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