MAX15090B:2.7V to 18V, 12A, Hot-Swap Solution with Current Report Output

Smallest and Most Integrated Hot Swap for 12V Applications

The MAX15090B/MAX15090C ICs are integrated solutions for hot-swap applications requiring the safe insertion and removal of circuit line cards from a live backplane. The devices integrate a hot-swap controller, 6mΩ power MOSFET, and an electronic circuit-breaker protection in a single package. The devices integrate an accurate current-sense circuitry and provide 220µA/A of proportional output current. The devices are designed for protection of 2.7V to 18V supply voltages. These devices implement a foldback current limit during startup to control inrush current lowering di/dt and keep the MOSFET operating under safe operating area (SOA) conditions. After the startup cycle is complete, on-chip comparators provide VariableSpeed/BiLevel™ protection against short-circuit and overcurrent faults, and immunity against system noise and load transients. The load is disconnected in the event of a fault condition. The devices are factory calibrated to deliver accurate overcurrent protection with ±10% accuracy. During a fault condition, the MAX15090B latches off, while the MAX15090C enters autoretry mode. The devices feature an IN-to-OUT short-circuit detection before startup. The devices provide a power-MOSFET GATE pin to program the slew rate during startup by adding an external capacitor. The devices have overvoltage/undervoltage input pins that can detect an overvoltage/undervoltage fault and disconnect the IN from the OUT. Additional features include internal overtemperature protection, power-good output, and fault-indicator output. The MAX15090B/MAX15090C ICs are available in a 28-bump, 2.07mm x 3.53mm, power wafer-level package (WLP) and are rated over the -40°C to +85°C extended temperature range.

Key Features
  • Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
    • Integrated 6mΩ (typ) Internal Power MOSFET Overvoltage Protection
    • Power-Good and Fault Outputs
    • Programmable Undervoltage Lockout
    • Current Reporting Without Need for External RSENSE
    • Thermal Protection
  • Flexibility Enables Use in Many Unique Designs
    • 2.7V to 18V Operating Voltage Range
    • Adjustable Circuit-Breaker Current/Current-Limit Threshold
    • Programmable Slew-Rate Control
    • Variable-Speed Circuit-Breaker Response
    • Latchoff or Automatic Retry Options
  • Safety Features Ensure Accurate, Robust Protection
    • 12A (max) Load Current Capability
    • ±10% Circuit-Breaker Threshold Accuracy
    • Inrush Current Regulated at Startup with Foldback
    • Implementation for di/dt Control
    • IN-to-OUT Short-Circuit Detection
MAX15090B, MAX15090C: Functional Diagram
MAX15090B, MAX15090C: Functional Diagram
Applications/Uses
  • Disk Drive Power
  • Industrial
  • RAID Systems
  • Server I/O Cards
  • Storage Bridge Bay
DataSheet
titleDownload file
MAX15090B-MAX15090C Data SheetMAX15090B-MAX15090C.pdf
Parametrics
Part NumberChannelsVIN
(V)
VIN
(V)
Internal Pwr. MOSFETsRON
(mΩ)
Current Limit
(A)
Current Limit
(A)
Current Limit Accuracy
(%)
Fault ResponseOper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX15090B12.718NMOS631210Latchoff-40 to +85WLP/28$5.13 @1k
MAX15090CAuto RetryWLP/28$3.10 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX15090BEWI+ActiveWLP,;28 pin;7.4 mm²-40°C to +85°CLead Free
MAX15090BEWI+TActiveWLP,;28 pin;7.4 mm²-40°C to +85°CLead Free
MAX15090B-MAX15090C.pdf MAX15090C