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MIC2590B-2YTQ Datasheet(PDF) 5 Page - Micrel Semiconductor |
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MIC2590B-2YTQ Datasheet(HTML) 5 Page - Micrel Semiconductor |
5 / 23 page ![]() Micrel, Inc. MIC2590B September 2008 5 M9999-091808 Pin Number Pin Name Pin Function 1, 36 /FAULTA, /FAULTB Open Drain, Active-Low: Asserted whenever the circuit breaker trips due to a fault condition. /FAULT[A/B] is reset by bringing the faulted slot’s ON pin low if /FAULT was asserted in response to a fault condition on one of the slot’s MAIN outputs(+12V, +5V, +3.3V, or –12V). /FAULT[A/B] is reset by bringing the faulted slot’s AUXEN pin low if /FAULT was asserted in response to a fault condition on the slot’s VAUX output. If a fault condition occurred on both the MAIN and AUX outputs of the same slot, then both ON and AUXEN must be brought low to de-assert the /FAULT output. 2, 35 CFILTERA, CFILTERB Filter Capacitor [A/B]: Capacitors connected between these pins and ground set the duration of tFLT. tFLT is the amount of time for which a slot remains incurrent- limit before its circuit breaker is tripped. 37 /INT Interrupt Output: Open Drain, Active-low. Asserted whenever a power faulti s detected. Cleared by writing a logic 1 to the respective active bit into the Status Register. 48 SDA SMBus Data: Bidirectional SMBus data line. 47 SCL SMBus Clock: Input. 39, 40, 41 A2, A1, A0 SMBus Address Select pins: Connect to ground or leave open in order to program device SMBus base address. There is an internal pull-up to VSTBY on each of these inputs. 4, 38 GPIA, GPIB General Purpose Inputs: The state of these inputs are available by reading the Common Status Register. 46 GND Ground |
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