MAX5955AEEE+T

The MAX5955AEEE+T is a dual hot swap controller from Analog Devices / Maxim Integrated, offering complete protection for dual-supply systems. It allows for the safe insertion and removal of circuit cards into live backplanes, operating from +1V to +13.2V with specific input voltage requirements.

Key features include independent on/off control for each channel, internal charge pumps for n-channel MOSFET gate drives, and inrush current regulation at startup. The device provides circuit-breaker functionality with adjustable thresholds and a VariableSpeed/BiLevel circuit breaker response. It supports autoretry or latched fault management and includes status outputs to indicate fault or safe conditions. Output undervoltage and overvoltage monitoring or protection are also integrated.

This controller is suitable for general-purpose applications and is available in a space-saving 16-QSOP package. The surface mountable design facilitates integration into various electronic systems requiring robust power management and protection.

Designed to prevent high inrush currents from damaging components or collapsing the backplane power supply, the MAX5955AEEE+T gradually ramps up the output voltage and regulates current to a preset limit during startup. After the startup cycle, on-chip comparators provide protection against short-circuit and overcurrent faults, as well as immunity against system noise and load transients.