Part # MAX5955-MAX5956 datasheet

Part Manufacturer: Maxim


Part Description: MAX5955 56 DS

Part Details:

19-3813; Rev 0; 9/05 EVALUATION KIT AVAILABLE Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control MAX5955/MAX5956 General Description Features The MAX5955 and MAX5956 are +1V to +13.2V dual Safe Hot Swap for +1V to +13.2V Power Supplies hot-swap controllers with independent on/off control for with VIN1 or VIN2 2.7V complete protection of dual-supply systems. They allow Independent On/Off Control for Each Channel the safe insertion and removal of circuit cards into live Internal Charge Pumps Generate n-Channel backplanes. The MAX5955 and MAX5956 operate MOSFET Gate Drives down to 1V provided one of the inputs is above 2.7V. Inrush Current Regulated at Startup The discharged filter capacitors of the circuit card pro-vide low impedance to the live backplane. High inrush Circuit-Breaker Function currents from the backplane to the circuit card can burn Adjustable Circuit Breaker/Current-Limit up connectors and components, or momentarily collapse Threshold from 25mV to 100mV the backplane power supply leading to a system reset. VariableSpeed/BiLevel Circuit Breaker Response The MAX5955 and MAX5956 hot-swap controllers pre-vent such problems by gradually ramping up the output Autoretry or Latched Fault Management voltage and regulating the current to a preset limit when Status Outputs Indicate Fault/Safe Condition the board is plugged in, allowing the system to stabilize Output Undervoltage and Overvoltage Monitoring safely. After the startup cycle is completed, two on-chip or Protection comparators provide VariableSpeed/BiLevelTM protectionagainst short-circuit and overcurrent faults, as well as Ordering Information immunity against system noise and load transients. In theevent of a fault condition, the load is disconnected. The PART TEMP RANGE PIN-PACKAGE MAX5955B and MAX5956B must be unlatched after afault, and the MAX5955A and MAX5956A automatically MAX5955AEEE -40°C to +85°C 16 QSOP restart after a fault. MAX5955AEEE+ -40°C to +85°C 16 QSOP The MAX5955 and MAX5956 integrate an on-board MAX5955AUEE 0°C to +85°C 16 QSOP charge pump to drive the gates of low-cost, external n-

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MAX5955-MAX5956.pdf Datasheet