max5970 Maxim Integrated Products, Inc., max5970 Datasheet - Page 9

• Manufacturer Part Number: max5970
• Description: 0v To 16v, Dual Hot-swap Controller With 10-bit Current And Voltage Monitor And 4 Led Drivers
• Manufacturer: Maxim Integrated Products, Inc.

0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
PIN
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
—
SENSE2
FAULT1
FAULT2
GATE2
ALERT
RETRY
NAME
HWEN
DGND
MODE
MON2
DREG
GND2
LED1
LED2
LED4
LED3
ON1
SDA
ON2
POL
SCL
PG1
PG2
EP
_______________________________________________________________________________________
LED Driver 1
LED Driver 2
Polarity Select Input. Connect to DREG for active-high power-good outputs (PG_). Connect to GND for
active-low power-good outputs.
Logic Power-Supply Input. Connect to REG externally through a 10I resistor and to DGND with a 1FF
ceramic capacitor.
Channel 1 Precision Turn-On Input
Channel 1 Active-Low Open-Drain Fault Output. FAULT1 goes low if an overcurrent occurs on channel 1.
Channel 2 Active-Low Open-Drain Fault Output. FAULT2 goes low if an overcurrent occurs on channel 2.
I
I
Open-Drain Alert Output. ALERT goes low during a fault to notify the system of an impending failure.
Channel 1 Open-Drain Power-Good Output
Channel 2 Open-Drain Power-Good Output
Hardware Enable Input. Connect to DREG or DGND. State is read upon power-up as V
UVLO threshold and sets enable register bits with this value. After UVLO, this input becomes inactive until
power is cycled.
Digital Ground. Connect all GND_ and DGND to AGND externally using a star connection.
Channel 2 Precision Turn-On Input
Autoretry Fault Management Input. Connect to DREG to enable autoretry operation. Connect to DGND to
enable latched-off operation.
Hot-Swap Two-State Mode Select Input. Connect MODE to DGND, DREG or leave it unconnected to oper-
ate the hot-swap channels independently or as a pair.
LED Driver 4
LED Driver 3
Channel 2 Gate Discharge Current Ground Return. Connect all GND_ and DGND to AGND externally
using a star connection.
Channel 2 Gate-Drive Output. Connect to gate of an external n-channel MOSFET.
Channel 2 Voltage Monitoring Input
Channel 2 Current-Sense Input. Connect SENSE2 to the source of an external MOSFET and to one end of
R
Exposed Pad. EP is internally grounded. Connect externally to ground plane using a star connection.
2
2
SENSE2
C Serial-Data Input/Output
C Serial-Clock Input
.
FUNCTION
Pin Description (continued)
IN
crosses the
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