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MIC2591B Datasheet(PDF) 2 Page - Micrel Semiconductor

Part # MIC2591B
Description  Dual-Slot PCI Express Hot-Plug Controller
PDF  34 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2591B Datasheet(HTML) 2 Page - Micrel Semiconductor

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MIC2591B
Micrel
March 2005
2
M9999-033105
Typical Application
System
Power
Supply
PCI Express Connector
+12V
+3.3V
VSTBY
VSTBYB
VSTBYA
VAUXA
12VINA
12VSENSEA
3VINA
3VSENSEA
12VINB
12VSENSEB
3VINB
3VSENSEB
12VGATEA
12VOUTA
3VGATEA
3VOUTA
3VGATEB
3VOUTB
VAUXB
GND
GND
A1
A2
A0
ONB
ONA
GPI_B0
GPI_A0
/FORCE_ONB
/FORCE_ONA
AUXENB
AUXENA
/INT
SCL
SDA
12VGATEB
12VOUTB
RFILTER[A&B]
CFILTERA
CFILTERB
MIC2591B
#CGS
22nF
*R12VGATEA
15
Si4435DY
Si4420DY
#CGATE
22nF
#CMILLER
6800pF
15
RSENSE
0.020
PCI
Express
Bus
3.3AUX
375mA
3.3V
3.0A
12V
2.1A (x4/x8)
RSENSE
0.020
#CGS
22nF
*R12VGATEB
15
Si4435DY
#CMILLER
6800pF
RSENSE
0.013
Si4420DY
#CGATE
22nF
*R3VGATEB
RSENSE
0.013
PCI Express Connector
PCI
Express
Bus
3.3AUX
375mA
3.3V
3.0A
12V
2.1A (x4/x8)
* Values for R12VGATE[A/B] and R3VGATE[A/B] may vary
depending upon the CGS of the external MOSFETs.
# These components are not required for MIC2591B
operation but can be implemented for GATE output
slew rate control (application specific)
¥ Bold lines indicate high current paths
4
9
2
11
26
5
8
3
10
12
13
14
16
32
29
34
27
25
24
23
21
22
17
46
15
15
*R3VGATEA
0.1µF
0.1µF
0.1F
0.1F
0.1F
0.1F
/FAULTB
/FAULTA
/PWRGDB
/PWRGDA
1
ONB
ONA
AUXENB
AUXENA
/INT
SCL
SDA
110k
1%
Hot-Plug
Controller
SMBus I/O
Management
Controller
48
47
37
43
42
38
28
35
20
45
44
VSTBY
C1
C2
VSTBY
10k x 3
10k x 4
SDA
SCL
/INT
SMBus
Base
Address
39
40
41
GPI_B0
100k
100k
100k
100k
GPI_A0
VSTBY
/FORCE_ONB
/FORCE_ONA
/FAULTB
/FAULTA
/PWRGDB
/PWRGDA
36
31
6
VSTBY
10k x 4
IREF
33
23.2k
1%



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