MAX5094CAUA+T

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The MAX5094CAUA+T is a high-current, synchronous, step-down switching regulator with a high-voltage N-channel MOSFET. This device employs current-mode control to deliver a substantially constant output current over a wide range of input voltages. The input voltage can range from 4V to 36V, and the output voltage is adjustable from 0.6V to 25V with only two external resistors. The device includes an internal gate driver to operate an external N-MOSFET switch. It supports pulse-by-pulse current limiting and short circuit protection.

The maximized operating cycle of this device allows higher current operation, which makes it ideal for high-current applications, such as the point-of-load supplies of telecom, industrial and automotive systems, high-current DC/DC supplies, and high-speed, high-current switching regulators. This device can also be used as a LED driver with a constant current output. With all of these features, the MAX5094CAUA+T is an ideal device for a variety of applications.

Application Field and Working Principle

The MAX5094CAUA+T can be used as a voltage regulator, providing constant current output over a wide range of input voltages. This is accomplished by employing a current-mode control and an external N-channel MOSFET switch to regulate the output current. The output voltage is adjustable from 0.6V to 25V, and is set by two external resistors. The device also has an adjustable soft-start pin to prevent inrush current, and a programmable output-current limit. The device is also equipped with an "Zero-CurrentClamp" feature, which allows it to operate with very low input and output voltage differences.

The MAX5094CAUA+T has two operating modes, normal mode and Burst Mode® operation (BMO) mode. In normal mode, the device operates at fixed frequency and adjust the duty cycle to regulate the output current. In BMO mode, the device operates at a programmable frequency and automatically switches to low-frequency mode for lower ripple in order to reduce power dissipation. The higher the frequency, the smaller the output voltage ripple. The device has an adjustable frequency for both normal and BMO mode.

The device is also equipped with a comparator-based Undervoltage Lockout (UVLO) circuit that monitors the input voltage, and disables the switching on the output if the input voltage is below the UVLO threshold. The device is also equipped with overcurrent protection and thermal protection.

The MAX5094CAUA+T is a versatile, high-performance device that is suitable for a wide range of applications. It is an ideal device for providing a constant current output over a wide range of input voltages, such as telecom, industrial and automotive systems, high-current DC/DC supplies, and high-speed, high-current switching regulators. The device also has a wide range of features, including adjustable frequency, adjustable soft-start, programmable output-current limit, and zero-current clamp, which makes it ideal for any application requiring high-performance current regulation.

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