MAX5924:1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor

The MAX5924/MAX5925/MAX5926 1V to 13.2V hot-swap controllers allow the safe insertion and removal of circuit cards into live backplanes. These devices hot swap supplies ranging from 1V to 13.2V provided that the device supply voltage, VCC, is at or above 2.25V and the hot-swapped supply, VS, does not exceed VCC. The MAX5924/MAX5925/MAX5926 hot-swap controllers limit the inrush current to the load and provide a circuit-breaker function for overcurrent protection. The devices operate with or without a sense resistor. When operating without a sense resistor, load-probing circuitry ensures a short circuit is not present during startup, then gradually turns on the external MOSFET. After the load probing is complete, on-chip comparators provide overcurrent protection by monitoring the voltage drop across the external MOSFET on-resistance. In the event of a fault condition, the load is disconnected. The devises include many integrated features that reduce component count and design time, including configurable turn-on voltage, slew rate, and circuit-breaker threshold. An on-board charge pump provides the gate drive for a low-cost, external n-channel MOSFET. The MAX5924/MAX5925/MAX5926 are available with open-drain PGOOD and/or active-low PGOOD outputs. The MAX5925/MAX5926 also feature a circuit breaker with temperature-compensated RDS(ON) sensing. The MAX5926 features a selectable 0ppm/°C or 3300ppm/°C temperature coefficient. The MAX5924 temperature coefficient is 0ppm/°C and the MAX5925 temperature coefficient is 3300ppm/°C. Autoretry and latched fault-management configurations are available (see the Selector Guide in the full data sheet).

Key Features
  • Hot Swap 1V to 13.2V with VCC > 2.25V
  • Drive High-Side n-Channel MOSFET
  • Operation With or Without RSENSE
  • Temperature-Compensated RDS(ON) Sensing
  • Protected During Turn-On into Shorted Load
  • Adjustable Circuit-Breaker Threshold
  • Programmable Slew-Rate Control
  • Programmable Turn-On Voltage
  • Autoretry or Latched Fault Management
  • 10-Pin µMAX® or 16-Pin QSOP Packages
MAX5924, MAX5925, MAX5926: Functional Diagram
MAX5924, MAX5925, MAX5926: Functional Diagram
Applications/Uses
  • Base Stations
  • Network Routers and Switches
  • Portable Device Bays
  • RAID
  • Remote-Access Servers
  • Servers
DataSheet
titleDownload file
MAX5924-MAX5926 Data SheetMAX5924-MAX5926.pdf
Parametrics
Part NumberVIN
(V)
VIN
(V)
Circuit Breaker/ Current LimitCircuit Breaker/Current Limit Threshold
(mV)
Fault Condition ControlChannelsPositive/Negative RailFeaturesPackage/PinsBudgetary
Price
minmaxSee Notes
MAX5924113.2Circuit Breaker10 to 500Latched Off1PositiveRequires No RSENSEµMAX/10$1.99 @1k
MAX5925Latched OffµMAX/10$3.25 @1k
MAX5926Latched Off
Periodic Retry
QSOP-EP/16$2.20 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX4272:3V to 12V, Current-Limiting, Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
  • MAX4271:3V to 12V, Current-Limiting, Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5924AEUBNo Longer AvailableMAX5924AEUB+µMAX,;10 pin;15.4 mm²-40°C to +85°CNo
MAX5924AEUB+ActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924AEUB+TActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924AEUB-TNo Longer AvailableMAX5924AEUB+TuMAX;10 pin-40°C to +85°CSee data sheet
MAX5924BEUBNo Longer AvailableMAX5924BEUB+µMAX,;10 pin;15.4 mm²-40°C to +85°CNo
MAX5924BEUB+ActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924BEUB+TActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924BEUB-TNo Longer AvailableMAX5924BEUB+TuMAX;10 pin-40°C to +85°CSee data sheet
MAX5924CEUBNo Longer AvailableµMAX,;10 pin;15.4 mm²-40°C to +85°CNo
MAX5924CEUB+No Longer AvailableµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5924CEUB+TNo Longer AvailableuMAX;10 pin-40°C to +85°CSee data sheet
MAX5924CEUB-TNo Longer AvailableuMAX;10 pin-40°C to +85°CSee data sheet
MAX5924DEUBNo Longer AvailableMAX5924DEUB+µMAX,;10 pin;15.4 mm²-40°C to +85°CNo
MAX5924DEUB+ActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924DEUB+TActiveµMAX,;10 pin;15.4 mm²-40°C to +85°CLead Free
MAX5924DEUB-TNo Longer AvailableMAX5924DEUB+TuMAX;10 pin-40°C to +85°CSee data sheet
MAX5924-MAX5926.pdf MAX5926
MAX5924.pdf MAX5924
MAX5924-MAX5926.pdf MAX5926