Part # MAX5959-MAX5960 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX5959 DS


Part Details:

19-0856; Rev 0; 7/07 EVALUATION KIT AVAILABLE Quad PCI Express, Hot-Plug Controllers MAX5959/MAX5960 General Description Features The MAX5959/MAX5960 quad hot-plug controllers are PCIe Compliant designed for PCI Express® (PCIe) applications. Thesedevices provide hot-plug control for the main 12V, 3.3V, Hot Swap 12V, 3.3V, and 3.3V Auxiliary for 4 and 3.3V auxiliary supplies of four PCIe slots. The PCIe Slots MAX5959/MAX5960s logic inputs/outputs allow interfac- Integrated Power MOSFETs for Auxiliary Supply ing directly with the system hot-plug management con- Rails troller or through an SMBusTM with an external I/Oexpander such as the MAX7313. An integrated Controls di/dt and dV/dt debounced attention switch and present-detect signals Active Current Limiting Protects Against simplify system design. Overcurrent/Short-Circuit Conditions The MAX5959/MAX5960 drive eight external n-channelMOSFETs to control the 12V and 3.3V main outputs. The Programmable Current-Limit Timeout 3.3V auxiliary outputs are controlled through 0.2 n-chan- PWRGD Signal Outputs with Programmable nel MOSFETs. Internal charge pumps provide the gate Power-On Reset (POR) (160ms Default) drive for the 12V outputs while the gate drive of the 3.3Voutput is driven by the 12V input supply clamped to 5.5V Latched FAULT Signal Output After Overcurrent above the respective 3.3V main supply rail. The 3.3V aux- or Overtemperature Fault iliary outputs are completely independent from the main Attention Switch Inputs/Outputs with 4ms outputs with their own charge pumps. Debounce At power-up, the MAX5959/MAX5960 keep all theMOSFETs off until the supplies rise above their respective Present-Detect Inputs undervoltage lockout (UVLO) thresholds. Upon a turn-on Force-On Inputs Facilitate Testing/Debug command, the MAX5959/MAX5960 enhance the externaland internal MOSFETs slowly with a constant gate current Thermal Shutdown to limit the power-supply inrush current. Allow Control Through SMBus with an I/O The MAX5959/MAX5960 actively limit the current to pro- Expander tect all outputs at all times and shut down if an overcur- Ordering Information rent condition persists longer than the programmableovercurrent timeout. After an overcurrent or overtempera- PIN- PKG ture fault condition, the MAX5959L/MAX5960L latch off PART TEMP RANGE


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MAX5959-MAX5960.pdf Datasheet