Typical Application Circuit appears at end of data sheet.

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this

part, refer to

www.maximintegrated.com/MAX15091.related.

General Description

The MAX15091/MAX15091A 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, 18mΩ (typ) power

MOSFET, and an electronic circuit-breaker protection in a

single package.

The devices integrate an accurate current-sense circuitry

and provide 170µA/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) con-

ditions.After the startup cycle is complete, on-chip compar-

ators provide VariableSpeed/BiLevel™ protection against

short-circuit and overcurrent faults, and immunity against

system noise and load transients. The load is disconnect-

ed 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 MAX15091

latches off, while the MAX15091A 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 add-

ing 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 pro-

tection, power-good output, and fault-indicator output.

The MAX15091/MAX15091A are available in a 28-pin,

5mm x 5mm TQFN power package and are rated over the

-40°C to +85°C extended temperature range.

Features

● 2.7V to 18V Operating Voltage Range

● 18mΩ Internal Power MOSFET

● 9A (typ) Load Current Capability

● Analog Current Report Output

● ±10% Circuit-Breaker Threshold Accuracy

● Programmable Inrush Current Control Under SOA

Operation

● Adjustable Circuit-Breaker Current/Current-Limit

Threshold

● Programmable Slew-Rate Control

● Variable-Speed Circuit-Breaker Response

● Thermal Protection

● Overvoltage Protection

● Power-Good and Fault Outputs

● Latch-Off or Automatic Retry Options

● Programmable Undervoltage Lockout

● IN to OUT Short-Circuit Detection

Applications

● Blade Servers

● Server I/O Cards

● RAID Systems

● Disk Drive Power

● Storage Applications

● Industrial Applications

VariableSpeed/BiLevel is a trademark of Maxim Integrated

Products, Inc.

19-6625; Rev 1; 9/13

EVALUATION KIT AVAILABLE

MAX15091/MAX15091A

2.7V to 18V, 9A, Integrated Hot-Swap

Solution with Current Report Output