MIC2590B-5BTQ Micrel Inc, MIC2590B-5BTQ Datasheet - Page 5

• Manufacturer Part Number: MIC2590B-5BTQ
• Description: IC PCI HOT PLUG CTLR DUAL 48TQFP
• Manufacturer: Micrel Inc
• Type: Hot-Swap Controllerr

Specifications of MIC2590B-5BTQ

• Applications: PCI, PCI-X
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Micrel, Inc.
September 2008
Pin Number
39, 40, 41
1, 36
2, 35
4, 38
37
48
47
46
CFILTERA, CFILTERB
/FAULTA, /FAULTB
GPIA, GPIB
A2, A1, A0
Pin Name
GND
SDA
/INT
SCL
Pin Function
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.
Filter Capacitor [A/B]: Capacitors connected between these pins and ground set
the duration of t
limit before its circuit breaker is tripped.
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.
SMBus Data: Bidirectional SMBus data line.
SMBus Clock: Input.
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.
General Purpose Inputs: The state of these inputs are available by reading the
Common Status Register.
Ground
5
FLT
. t
FLT
is the amount of time for which a slot remains incurrent-
M9999-091808
MIC2590B