MAX5956AUEE+T

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A hot swap is a feature used in electrical engineering that allows a person to safely add or remove a load from a powered circuit without powering down the circuit. Hot swappable parts generally feature a hotswap controller, which is an integrated circuit (IC) that provides control over the power enable and fault monitoring of a system. One such controller is the Maxim Integrated MAX5956AUEE+T, which is a hot swap controller predominantly used in communication and storage applications.

The Maxim Integrated MAX5956AUEE+T is specifically designed for point-of-load and power-supply voltage regulation. It includes a 64-V N-channel MOSFET drive and a precision voltage regulator. This hot swap controller is comprised of two functional blocks: the power enable control logic (PECL) and the fault monitoring logic (FML). The PECL block controls power enable signals, while the FML block monitors system faults and initiates an automatic power shutdown when the fault is detected. This device is designed to protect against power glitches, current overloads, overvoltages and undervoltages.

The MAX5956AUEE+T features a 2.5-V voltage regulator, which provides the internal bias voltage. This regulator has a typical output current of 3.2 mA, and a standby current of 6 μA. The N-channel MOSFET is used to switch the load on and off, and it is controlled by an enable signal and modulated by an adjustable current-source. The logic block includes a reset detector and an undervoltage lockout (UVLO) circuit, which prevents a power surge when the voltage dips too low.

The MAX5956AUEE+T also includes a power-good output (PGO) res"et circuit. This feature monitors the output voltage, and it issues a reset signal when the voltage is below the specified level. In addition, the device features automatic fault detection functions, such as overcurrent and overvoltage protection, short circuit protection and overtemperature protection. The MAX5956AUEE+T has an adjustable slew rate and an adjustable delay timer.

The MAX5956AUEE+T hot swap controllers are commonly used in communication, computing, and storage applications, where reliable and precise voltage regulation is required. These devices offer protection against power glitches, overvoltage and undervoltage, as well as various fault detection functions. They feature precise voltage regulation, a reset detector and an undervoltage lockout circuit. The adjustable slew rate and delay timer provide precise control over switching.

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