Dual PCI 2.2 Hot-Swap Controllers

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11

PIN

NAME

FUNCTION

1

+12VOA

Channel A +12V Output

2

3.3VGATEA

Channel A +3.3V External N-Channel MOSFET Gate Drive. 3.3VGATEA driven by +12VIN.

3

3.3VSENA

Channel A External 3.3V Current-Sense Input

4

3.3VOA

Channel A +3.3V Output Sense

5

ONA

Channel A Master ON/OFF Output Control. Drive ONA logic high to enable channel A +3.3V, +5V, and

6

ONB

Channel B Master ON/OFF Output Control. Drive ONB logic high to enable channel B +3.3V, +5V, and

7

GND

Ground

8

PGOODA

Channel A Power-Good Output. PGOODA is an open-drain output that pulls low when a fault is detected on

channel A outputs.

9

PGOODB

Channel B Power-Good Output. PGOODB is an open-drain output that pulls low when a fault is detected on

channel B outputs.

10

AUXONA

Channel A 3.3VAUX ON/OFF Control Input. Drive AUXONA logic high to enable channel A +3.3V auxiliary

output.

11

AUXONB

Channel B 3.3VAUX ON/OFF Control Input. Drive AUXONB logic high to enable channel B +3.3V auxiliary

output.

12

3.3VAUXOA

Channel A 3.3VAUX Output

13

3.3VAUXIN

3.3VAUX Input. Provides power to the +3.3V auxiliary channels.

14

3.3VAUXOB

Channel B 3.3VAUX Output

15

-12VOB

Channel B -12V Output

16

-12VIN

-12V Input

17

-12VOA

Channel A -12V Output

18

5VOB

Channel B +5V Output Sense

19

5VSENB

Channel B External +5V Current-Sense Input

20

5VGATEB

Channel B +5V External N-Channel MOSFET Gate Drive. 5VGATEB driven by +12VIN.

21

5VOA

Channel A +5V Output Sense

22

5VSENA

Channel A External +5V Current-Sense Input

23

5VGATEA

Channel A +5V External N-Channel MOSFET Gate Drive. 5VGATEA driven by +12VIN.

24

3.3VOB

Channel B +3.3V Output Sense

25

3.3VSENB

Channel B External +3.3V Current-Sense Input

26

3.3VGATEB

Channel B +3.3V External N-Channel MOSFET Gate Drive. 3.3VGATEB driven by +12VIN.

27

+12VOB

Channel B +12V Output

28

+12VIN

+12V Input. +12VIN powers the main supplies of the MAX5915/MAX5916.

Pin Description