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Linear Tech voltage monitor has triple current control feature

Posted: 26 Dec 2002 ?? ?Print Version ?Bookmark and Share

Keywords:linear tech? ltc4214? ltc4214 1? ltc4214 2? voltage monitor?

The LTC4214 -12V Hot Swap controller from Linear Technology Corp. features triple current control via a timed circuit breaker, active current limiting, and a fast feed forward path that limits peak current under worst-case catastrophic fault.

A slight overcurrent condition will trip the circuit breaker if it persists for an adjustable timer period. Larger overcurrent conditions will be controlled through active current limiting, maintaining a safe power level in the MOSFET.

Catastrophic over-current conditions, due to a short circuit, will cause the circuit breaker to trip immediately, protecting the load and the MOSFET even more quickly than the active current limit loop.

The triple current control feature along with the separate soft-start sequence for in-rush current limiting protect -5V, -12V, or ECL systems while taking up minimal board space. The LTC4214 is available in a 10-pin MSOP, and is available in a version that latches off after a circuit breaker fault times out (LTC4214-1) and a version that provides automatic retry after a fault (LTC4214-2).

Both versions require a supply of -6V to -16V and are screened to the commercial and industrial temperature ranges. Pricing starts at $2.35 each for 1,000-piece quantities.

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