Hot-swap controller suits AdvancedTCA cards

The LTC4223 12- and 3.3-V dual supply hot-swap controller enables live insertion and removal of mezzanine cards used on AdvancedTCA carrier blades, MicroTCA systems, and proprietary network platforms. Offered in 16-lead SSOP and 5 x 4-mm DFN packages, the controller targets AMC/MicroTCA applications and meets PICMG AMC requirements.

Specifications include independent control of turn-on and shutdown for the 12-V main and 3.3-V auxiliary supply rails. The 12-V rail is controlled via an external n-channel MOSFET, while the 3.3-V rail uses an integrated 0.3-Ω switch for auxiliary or management power. The 12-V rail features a current limiter in the event of short-circuit faults, with guaranteed 5% accuracy. An external current-sense resistor adjusts the current trip threshold. (From $2.10 each/1,000—available now,

Linear Technology , Milpitas , CA
Literature 800-4-LINEAR
http://www.linear.com