LTC3633AEFE-1#PBF

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LTC3633AEFE-1#PBF Application Field and Working Principle

The LTC3633AEFE-1#PBF is a high-speed synchronous DC/DC step-down regulator controller with high-efficiency operation. It supports fixed frequency current mode control and allows precise adjustment of the constant frequency slope compensation. The LTC3633AEFE-1#PBF is available in small 6-pin SOT-23 and TDFN packages, making it ideal for space constrained designs.

As a high-speed synchronous DC/DC step-down regulator controller, the LTC3633AEFE-1#PBF is capable of efficient up to 96% with the use of careful component selection and optimization of the layout. It is designed for a maximum output current of 2.5A and a supply voltage range of 4.75V to 37V. It provides nominal output voltage from 0.6V to 90% of the input voltage with a programmable soft start, over current protection and warning flag. The LTC3633AEFE-1#PBF’s current monitor can be connected to an external resistor to monitor load current which can save external power in small packages without sacrificing performance.

The primary application field of the LTC3633AEFE-1#PBF is PMIC - Voltage Regulators - DC DC Switching Regulators. It is suitable for use in low voltage DC/DC conversion such as portable electronics, battery-powered systems, handheld electronics, automotive and aerospace applications. It is also suitable for use in battery-charging systems, industrial AC/DC power systems and portable power systems. Applications that need high efficiency, low noise, small size, and low cost will benefit from the features of the LTC3633AEFE-1#PBF.

The working principle of the LTC3633AEFE-1#PBF is to convert the input voltage to the output voltage by synchronous rectification. The controller regulates the output voltage by comparing the feedback voltage to a reference voltage. When the feedback voltage exceeds the reference voltage, the output switch is shut off, reducing the output voltage. When the feedback voltage is below the reference voltage, the output switch is turned on, increasing the output voltage. Output current sensing is also used to protect the circuit from over current conditions.

In summary, the LTC3633AEFE-1#PBF is a high-performance synchronous DC/DC step-down regulator controller suitable for use in applications requiring efficiency, low noise, small size and low cost. It is capable of efficient up to 96%, with a maximum output current of 2.5A and a supply voltage range of 4.75V to 37V. It has excellent features such as programmable soft start, over current protection and warning flag. Its primary application field is PMIC - Voltage Regulators - DC DC Switching Regulators.

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