This IC targets dual voltage hot swap applications across the
+2.5V to +3.3V bias supply voltage range with a second lower
voltage rail down to less than 1V. It features a charge pump for
driving external N-Channel MOSFETs, regulated current
protection and duration, output undervoltage monitoring and
reporting, optional latch-off or retry response, and adjustable
soft-start.
The current regulation level (CR) for each rail is set by two
external resistors and each CR duration is set by an external
capacitor on the TIM pin. After the CR duration has expired
the IC then quickly pulls down the associated GATE(s)
output turning off its external FET(s). The ISL6172 offers a
latched output or indefinite auto retry mode of operation.

Features
• Dual Supply Hot Swap Power Distribution Control to <1V
• Less than 1µs Response Time to Dead Short
• Overcurrent Circuit Breaker Fault Isolation and
Programmable Current Regulation Level Protection
Functions
• Programmable Current Regulation Duration
• Charge Pump Allows the use of N-Channel MOSFETs
• Rail Independent Control, Monitoring and Reporting I/O
• Adjustable Ramp up for Inrush Protection During Turn On
• Two Levels of Overcurrent Detection Provide Fast
Response to Varying Fault Conditions
• Latch-off or Auto Reset Response to Fault Functions
• Adjustable Current Regulation Threshold as low as 20mV
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
• Pb-free

Applications
• Power Supply Sequencing, Distribution and Control
• Hot Swap/Electronic Breaker Circuits
• Network Hubs, Routers, Switches
• Hot Swap Bays, Cards and Modules