Features
• Integrates Three Major Functions
- Power Sequencing
- Hot Swap Controller
- System Management Functions
• Penta-Power Sequencing
- Sequence up to 5 DC/DC converters.
- Four independent voltage enable pins
- Four time delay circuits
- Soft Power Sequencing - MRC pin restarts sequence
without power cycling.
• Hot Swap Controller
- Programmable overvoltage and undervoltage protection
- Undervoltage lockout for battery/redundant supplies
- Electronic circuit breaker - Overcurrent Detection and
Gate Shut-off
- Overcurrent limit during Insertion
- Hardshort retry with retry failure flag
- Selectable gate current using IGQ pins (10, 70, 150μA)
- MRH pin controls board insertion/extraction.
- Typically operates from -30V to -80V. Tolerates
transients to -200V (limited by external components)
• System Management
- Reset output, with delay, holds off host until all supplies
are good
- Host control of reinsertion with MRH input
- Host control of resequencing using MRC input
• Available packages
- 32-lead Quad No-Lead Frame (QFN)
Applications
• -48V Hot Swap Power Backplane/Distribution Central
Office, Ethernet for VOIP
• Card Insertion Detection
• Power Sequencing DC/DC/Power Bricks
• IP Phone Applications
• Databus Power Interfacing
• Custom Industrial Power Backplanes
• Distributed Power Systems