Manual

MAX5961
0 to 16V, Quad, Hot-Swap Controller
with 10-Bit Current and Voltage Monitor
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Pin Description
PIN NAME FUNCTION
1 SENSE1
Channel 1 Current-Sense Input. Connect SENSE1 to the source of an external MOSFET and to one end of
R
SENSE1
(see the Typical Application Circuit).
2 MON1 Channel 1 Voltage Monitoring Input
3 GATE1 Channel 1 Gate-Drive Output. Connect to gate of an external n-channel MOSFET.
4 GND1
Channel 1 Gate Discharge Current Ground Return. Connect all GND_ and DGND to AGND externally
using a star connection.
5 GND3
Channel 3 Gate Discharge Current Ground Return. Connect all GND_ and DGND to AGND externally
using a star connection.
6 GATE3 Channel 3 Gate-Drive Output. Connect to the gate of an external n-channel MOSFET.
7 MON3 Channel 3 Voltage Monitoring Input
8 SENSE3
Channel 3 Current-Sense Input. Connect SENSE3 to the source of an external MOSFET and to one end of
R
SENSE3
(see the Typical Application Circuit).
9 POL
Polarity Select Input. Connect to DREG for active-high power-good outputs (PG_). Connect to GND_ for
active-low power-good outputs.
10 DREG
Logic Power-Supply Input. Connect to REG externally through a 10Ω resistor and to DGND with a 1µF
ceramic capacitor.
11 ON1 Channel 1 Precision Turn-On Input
12 ON3 Channel 3 Precision Turn-On Input
13 FAULT1
Channel 1 Active-Low Open-Drain Fault Output. FAULT1 goes low if an overcurrent shutdown occurs on
channel 1.
14 FAULT2
Channel 2 Active-Low Open-Drain Fault Output. FAULT2 goes low if an overcurrent shutdown occurs on
channel 2.
15 FAULT3
Channel 3 Active-Low Open-Drain Fault Output. FAULT3 goes low if an overcurrent shutdown occurs on
channel 3.
16 FAULT4
Channel 4 Active-Low Open-Drain Fault Output. FAULT4 goes low if an overcurrent shutdown occurs on
channel 4.
17 SDA I
2
C Serial-Data Input/Output
18 SCL I
2
C Serial-Clock Input
19 ALERT Open-Drain Alert Output. ALERT goes low during a fault to notify the system of an impending failure.
20 PG1 Channel 1 Open-Drain Power-Good Output
21 PG2 Channel 2 Open-Drain Power-Good Output
22 PG3 Channel 3 Open-Drain Power-Good Output
23 PG4 Channel 4 Open-Drain Power-Good Output
24 DGND Digital Ground. Connect all GND_ and DGND to AGND externally using a star connection.
25 ON4 Channel 4 Precision Turn-On Input
26 ON2 Channel 2 Precision Turn-On Input
27 RETRY
Autoretry Fault Management Input. Connect to DREG to enable autoretry operation. Connect to DGND to
enable latched-off operation.
28 I.C. Internally Connected. Connect to AGND only.