MIC2590B_08 Datasheet, PDF (2/23 Pages) Micrel Semiconductor – Dual-Slot PCI Hot Plug Controller

Micrel, Inc.
Typical Application
Power
Supply
+12V
12V
+5.0V
+3.3V
VSTBY
20k
1%
12VIN1 12VIN2 12MVIN1 12MVIN2
VSTBY1
VSTBY2
12SLEWA
VAUXA
5VINA
5VSENA
12SLEWB
5VGATEA
5VOUTA
CFILTERA
3VINA
IREF
3VSENSEA
CFILTERB
3VGATEA
3VOUTA
12VOUTA
12MVOUTA
GND
MIC2590B
5VINB
5VSENSEB
ONA/ONB
AUXENA/AUXENB
ONA/ONB
2
AUXENA/AUXENB
5VGATEB
/FAULTA, /FAULTB
2
/FAULTA, /FAULTB
5VOUTB
2
Hot-Plug
Controller
A0
3VINB
A1
3VSENSEB
A2
/INT
SCL
SDA
3VGATEB
3VOUTB
12VOUTB
12MVOUTB
VAUXB
SMBus I/O
SDA
SCL
/INT
SDA
SCL ^Management
Controller
/INT
1A Schotty Diode
(Clamp)
R_5VGATEA
C_GATE
C_GATE
R_3VGATEA
R_SENSE
R_SENSE
4.7µF
4.7µF
R_5VGATEB
C_GATE
C_GATE
R_3VGATEB
R_SENSE
R_SENSE
4.7µF
4.7µF
Bus Switch
A
B
/OE
MIC2590B
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
September 2008
2
M9999-091808