MAX5904

Low-Voltage, Dual Hot-Swap Controllers/Power Sequencers


Please check latest availability status for a specific part variant.

Description

The MAX5904-MAX5909 dual hot-swap controllers provide complete protection for dual-supply systems. These devices hot swap two supplies ranging from +1V to +13.2V, provided one supply is at or above 2.7V, allowing the safe insertion and removal of circuit cards into live backplanes.

The discharged filter capacitors of the circuit card provide low impedance to the live backplane. High inrush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. The MAX5904 family of hot-swap controllers prevents such problems by gradually ramping up the output voltage and regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is completed, two on-chip comparators provide VariableSpeed/BiLevel™ protection against short-circuit and overcurrent faults, as well as immunity against system noise and load transients. In the event of a fault condition, the load is disconnected. The MAX5905/MAX5907/MAX5909 must be unlatched after a fault, and the MAX5904/MAX5906/MAX5908 automatically restart after a fault.

The MAX5904 family offers a variety of options to reduce component count and design time. All devices integrate an on-board charge pump to drive the gates of low-cost, external N-channel MOSFETs. The devices offer integrated features like startup current regulation and current glitch protection to eliminate external timing resistors and capacitors. The MAX5906-MAX5909 provide an open-drain status output, an adjustable startup timer, an adjustable current limit, an uncommitted comparator, and output undervoltage/overvoltage monitoring.

The MAX5904/MAX5905 are available in 8-pin SO packages. The MAX5906-MAX5909 are available in space-saving 16-pin QSOP packages.

Key Features

  • Safe Hot Swap for +1V to +13.2V Power Supplies
    Requires One Input > 2.7V
  • Low 25mV Default Current-Limit Threshold
  • Inrush Current Regulated at Startup
  • Circuit Breaker Function
  • Adjustable Circuit Breaker/Current-Limit Threshold
  • VariableSpeed/BiLevel Circuit-Breaker Response
  • Auto-Retry or Latched Fault Management
  • On/Off Sequence Programming
  • Status Output Indicates Fault/Safe Condition
  • Output Undervoltage and Overvoltage Monitoring and/or Protection

Applications/Uses

  • Base-Station Line Cards
  • Hot Plug-In Daughter Cards
  • Network Routers and Switches
  • PCI Express® Applications
  • Power-Supply Sequencing
  • RAID
  • Solid-State Circuit Breakers
Part NumberVIN
(V)
VIN
(V)
Circuit Breaker/ Current LimitCircuit Breaker/Current Limit Threshold
(mV)
Fault Condition ControlChannelsPositive/Negative RailFeaturesPackage/PinsBudgetary
Price
minmaxSee Notes
MAX5904 113.2Current Limit25Periodic Retry2Positive
Undervoltage/Overvoltage Protection
VariableSpeed/BiLevel Current Limit
SOIC (N)/8
$4.89 @1k
MAX5905 Latched Off
SOIC (N)/8
-
MAX5906 Periodic Retry
QSOP/16
$4.89 @1k
MAX5908 Periodic Retry
QSOP/16
$5.06 @1k
MAX5909 Latched Off
QSOP/16
$4.39 @1k
See All Hot Swap Controllers (53)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX5906EVKIT: Evaluation Kit for the MAX5906, MAX5907, MAX5908, MAX5909
MAX5907EVKIT: Evaluation Kit for the MAX5906, MAX5907, MAX5908, MAX5909
MAX5908EVKIT: Evaluation Kit for the MAX5906, MAX5907, MAX5908, MAX5909
MAX5909EVKIT: Evaluation Kit for the MAX5906, MAX5907, MAX5908, MAX5909

Technical Documents

App Note 4245 Three Approaches to Creating Negative Low-Voltage Hot-Swap Circuits

Quality and Environmental Data

Product Reliability Reports: MAX5904.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
Status:
Package:
Temperature:

Related Resources


MAX15095A
2.7V to 18V, 6.6A Integrated Hot-Swap/Electronic Circuit Breaker

  • Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
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MAX15095D
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MAX15095, MAX15095A, MAX15095D
2.7V to 18V, 6.6A Integrated Hot-Swap/Electronic Circuit Breaker

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