Datasheet

MAX5946
Dual PCI Express, Hot-Plug
Controller
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MAX5946
Q1
SI7448DP-T1
Q3
SI7448DP-T1
PWRGDA
12GA
12SA-
12SA+
3.3VAUXIN
12VIN
112SB-
12SB+
12GB
3.3VAUXOA
GND
PWRGDB
3.3VAUXOB
PORADJ
10kΩ
PRSNT1
+12V
GND
PWRGD
3.3VAUX
+3.3V
PRSNT2
PRSNT1
+12V
GND
PWRGD
3.3VAUX
+3.3V
PRSNT2
V
3.3AUXIN
R
PORADJ
= OPEN
V
3.3AUXIN
R1
8mΩ
R3
8mΩ
R2
5mΩ
10kΩ
R4
5mΩ
0.1µF
0.1µF
10kΩ
Q2
SI7448DP-T1
Q4
SI7448DP-T1
3.3GA 3.3SA- 3.3SA+ AUXONA / AUXONB ONA / ONB INPUT1 / INPUT2 OUTPUT1 / OUTPUT2 3.3SB+ TIM 3.3SB- 3.3GB
3.3V INPUT
MAX7313ATG
16-BIT I/O EXPANDER
MRL
ATTENTION
SWITCHES
LED's LED's
SMBus
INTAO-2
2
2
R
TM
=
OPEN
PRES-DETA PRES-DETB FAULTA / FAULTB FONA / FONB
2 2 2 2
2 2
3
2
PCI EXPRESS
SLOT A
PCI EXPRESS
SLOT B
ADD-IN
CARD
IN5819
V
12VIN
MRL
1µF
Typical Application Circuit