MIC2590B Datasheet, PDF (2/24 Pages) Micrel Semiconductor – Dual-Slot PCI Hot Plug Controller

MIC2590B
Typical Application
Power
Supply
+12V
—12V
+5.0V
+3.3V
VSTBY
20k
1%
ONA/ONB
2
AUXENA/AUXENB
2
/FAULTA, /FAULTB
2
Hot Plug
Controller
1A Schotty Diode
(Clamp)
12VIN1 12VIN2 12MVIN1 12MVIN2
VSTBY1
VSTBY2
12SLEWA
12SLEWB
VAUXA
5VINA
5VSENA
5VGATEA
5VOUTA
CFILTERA
3VINA
IREF
3VSENA
CFILTERB
3VGATEA
3VOUTA
12VOUTA
12MVOUTA
5VINB
GND
MIC2590B
R_5VGATEA
C_GATE
C_GATE
R_3VGATEA
4.7µF
4.7µF
ONA/ONB
AUXENA/AUXENB
/FAULTA, /FAULTB
A0
A1
A2
/INT
SCL
SDA
5VSENB
5VGATEB
5VOUTB
3VINB
3VSENB
3VGATEB
3VOUTB
12VOUTB
12MVOUTB
VAUXB
R_5VGATEB
C_GATE
C_GATE
R_3VGATEB
4.7µF
4.7µF
R_SENSE
R_SENSE
R_SENSE
R_SENSE
Micrel
PCI
Connector
PCI Bus
3.3VAUXA
5V, 5A
3.3V, 7.6A
12V, 0.5A
—12V, 0.1A
PCI Bus
5V, 5A
3.3V, 7.6A
12V, 0.5A
—12V, 0.1A
3.3VAUXB
SMBus I/O
SDA
SCL
/INT
SDA
Management
SCL
Controller
/INT
Bus Switch
A
B
/OE
MIC2590B
2
August 2002