Hot-swap controller optimized for AdvancedTCA mezzanine cards - Embedded.com

Hot-swap controller optimized for AdvancedTCA mezzanine cards

Milpitas, Calif.—Linear Technology has introduced the LTC4223, a 12V and 3.3V dual supply Hot Swap controller that enables live insertion and removal of mezzanine cards used on AdvancedTCA carrier blades, MicroTCA systems, or proprietary network platforms.

The PCI Industrial Computer Manufacturers Group (PICMG) has developed the Advanced Mezzanine Card (AMC) standard that defines the requirements for add-on modules to expand the functionality of an AdvancedTCA carrier board.

The modules are also suitable for MicroTCA applications, an emerging standard that provides a scaled version of ATCA for more compact and price-sensitive applications. The LTC4223 is the first Hot Swap controller targeted specifically for AMC/MicroTCA applications that meets the full requirements outlined in the PICMG AMC standard.

The LTC4223 provides independently controlled turn-on and shutdown of the 12V main and 3.3V auxiliary supply rails used on the mezzanine card. The main 12V rail is controlled via an external N-channel MOSFET, while the 3.3V rail uses an integrated 0.3 Ohm switch for auxiliary or management power up to 165mA. For the 12V rail, key features include a fast acting current limit in the event of short circuit faults, with guaranteed 5% accuracy.

Pricing: Begins at $2.10 each in 1,000-piece quantities.
Availability: Specified over the commercial and industrial temperature ranges, the LTC4223 is offered now in 16-lead SSOP and 5mm x 4mm DFN packages.
Datasheet: click here.

Linear Technology, 1-408-432-1900, www.linear.com

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