MAX16046A Datasheet, PDF (24/71 Pages) Maxim Integrated Products – 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers

12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
Voltage Tracking Sense (INS_) Inputs
GPIO1–GPIO4 are configurable as feedback sense
return inputs (INS_) for closed-loop tracking. Connect the
gate of an external n-channel MOSFET to each EN_OUT_
configured for closed-loop tracking. Connect INS_ inputs
to the source of the MOSFETs for tracking feedback.
Internal comparators monitor INS_ with respect to a
control tracking ramp voltage for power-up/power-down
and control each EN_OUT_ voltage. Under normal con-
ditions each INS_ voltage tracks the ramp voltage until
the power-good voltage threshold has been reached.
The slew rate for the ramp voltage and the INS_ to
MON_ power-good threshold are programmable. See
the Closed-Loop Tracking section.
INS_ connections can also act as 100Ω pulldowns for
closed-loop tracking channels or for other power sup-
plies, if INS_ are connected to the outputs of the sup-
plies. Set the appropriate bits in r4Eh[7:4] to enable
pulldown functionality. See Table 13.
General-Purpose Logic Inputs/Outputs
Configure GPIO1–GPIO6 be used as general-purpose
inputs/outputs. Write values to GPIOs through r1Ah
when operating as outputs, and read values from r1Bh
when operating as inputs. Register r1Bh is read-only.
See Table 6 for more information on reading and writing
to the GPIOs as logic inputs/outputs. Both registers
r1Ah and r1Bh are located in the extended page and
are therefore not loaded from EEPROM on boot-up.
Table 6. GPIO Data-In/Data-Out Data
EXTENDED PAGE
ADDRESS
BIT RANGE
DESCRIPTION
GPIO Logic Output Data
[0]
0 = GPIO1 is a logic-low output
1 = GPIO1 is a logic-high output
[1]
0 = GPIO2 is a logic-low output
1 = GPIO2 is a logic-high output
[2]
0 = GPIO3 is a logic-low output
1 = GPIO3 is a logic-high output
1Ah
[3]
0 = GPIO4 is a logic-low output
1 = GPIO4 is a logic-high output
[4]
0 = GPIO5 is a logic-low output
1 = GPIO5 is a logic-high output
[5]
[7:6]
0 = GPIO6 is a logic-low output
1 = GPIO6 is a logic-high output
Not used
[0]
GPIO Logic Input Data
GPIO1 logic-input state
[1]
GPIO2 logic-input state
[2]
GPIO3 logic-input state
1Bh
[3]
GPIO4 logic-input state
[4]
GPIO5 logic-input state
[5]
GPIO6 logic-input state
[7:6]
Not used
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