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.
Applications
- Disk Drive Power
- Industrial
- RAID Systems
- Server I/O Cards
- Storage Bridge Bay
