A rich feature set makes MIC2044/45 ideal for a wide range of applications. First and foremost, MIC2044/45 are current-limiting devices, and the user has full control over the limiting point by the selection of a single external reference resistor. The power switches are fully self-protected, incorporating on-chip temperature sensing and shutdown circuitry to keep both the device and the load safe under short-circuit or catastrophic failure conditions. Response to a fault can be either to limit the load current supplied, as in the case of the MIC2044, or to act like a circuit breaker (MIC2045) and shut off all current to the load until the fault condition has cleared and then re-energize (auto-retry).
For system applications requiring soft start, to limit RFI and prevent glitching the system power mains, MIC2044/45 offer slew rate control, allowing the load to be brought online gracefully instead of abruptly.
User-controlled UVLO ensures no power is applied to the load until the input supplies have reached their full operational value, and a Power Good output comparator signals when the load has achieved its intended operating voltage.
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