MAX16047ETN+T Datasheet MAX16047ETN+, MAX16049ETN+, MAX16049ETN+T | P22-P24

MAX16047/MAX16049

12-Channel/8-Channel EEPROM-Programmable

System Managers with Nonvolatile Fault Registers

22 ______________________________________________________________________________________

Any_Fault Outputs

GPIO1–GPIO4 are configurable as active-low push-pull

or open-drain fault-dependent outputs. These outputs

assert when any monitored input exceeds an overvolt-

age, undervoltage, or early warning threshold.

FAULT1 and FAULT2

GPIO5 and GPIO6 are configurable as dedicated fault

outputs, FAULT1 and FAULT2, respectively. Fault

outputs can assert on one or more overvoltage, under-

voltage, or early warning conditions for selected inputs.

FAULT1 and FAULT2 dependencies are set using reg-

isters r15h to r18h. See Table 7.

If a fault output depends on more than one MON_, the

fault output will assert if one or more MON_ exceeds a

programmed threshold voltage.

Table 7. FAULT1 and FAULT2 Output Configuration and Dependencies

EEPROM

ADDRESS

BIT RANGE DESCRIPTION

[0] 1 = FAULT1 is a digital output dependent on MON1

[1] 1 = FAULT1 is a digital output dependent on MON2

[2] 1 = FAULT1 is a digital output dependent on MON3

[3] 1 = FAULT1 is a digital output dependent on MON4

[4] 1 = FAULT1 is a digital output dependent on MON5

[5] 1 = FAULT1 is a digital output dependent on MON6

[6] 1 = FAULT1 is a digital output dependent on MON7

15h

[7] 1 = FAULT1 is a digital output dependent on MON8

[0] 1 = FAULT1 is a digital output dependent on MON9*

[1] 1 = FAULT1 is a digital output dependent on MON10*

[2] 1 = FAULT1 is a digital output dependent on MON11*

[3] 1 = FAULT1 is a digital output dependent on MON12*

[4]

1 = FAULT1 is a digital output that depends on the overvoltage thresholds at the input

selected by r15h and r16h[3:0]

[5]

1 = FAULT1 is a digital output that depends on the undervoltage thresholds at the

input selected by r15h and r16h[3:0]

[6]

1 = FAULT1 is a digital output that depends on the early warning thresholds at the

input selected by r15h and r16h[3:0]

16h

[7]

0 = FAULT1 is an active-low digital output

1 = FAULT1 is an active-high digital output

[0] 1 = FAULT2 is a digital output dependent on MON1

[1] 1 = FAULT2 is a digital output dependent on MON2

[2] 1 = FAULT2 is a digital output dependent on MON3

[3] 1 = FAULT2 is a digital output dependent on MON4

[4] 1 = FAULT2 is a digital output dependent on MON5

[5] 1 = FAULT2 is a digital output dependent on MON6

[6] 1 = FAULT2 is a digital output dependent on MON7

17h

[7] 1 = FAULT2 is a digital output dependent on MON8

MAX16047/MAX16049

Fault-On Power-Up (FAULTPU)

GPIO6 indicates a fault during power-up or power-

down when configured as a “fault-on power-up” output.

Under these conditions, all EN_OUT_ voltages are

pulled low and fault data is saved to nonvolatile

EEPROM. See the

Faults

section.

MARGIN

GPIO6 is configurable as an active-low MARGIN input.

Drive MARGIN low before varying system voltages above

or below the thresholds to avoid signaling an error. Drive

MARGIN high for normal operation.

When MARGIN is pulled low or r4Dh[1] is a ‘1,’ the mar-

gin function is enabled. FAULT1, FAULT2, Any_Fault,

and RESET are latched in their current state. Threshold

violations will be ignored, and faults will not be logged.

Manual Reset (MR)

GPIO4 is configurable to act as an active-low manual

reset input, MR. Drive MR low to assert RESET. RESET

remains low for the selected reset timeout period after

MR transitions from low to high. See the

RESET

section

for more information on selecting a reset timeout period.

Watchdog Input (WDI) and Output (WDO)

Set r1Eh[1:0] and r1Dh[7] to ‘110’ to configure GPIO6 as

WDO. Set r1Dh[6:4] to ‘111’ to configure GPIO5 as WDI.

WDO is an open-drain active-low output. See the

Watchdog Timer

section for more information about the

operation of the watchdog timer.

Programmable Outputs

(EN_OUT1–EN_OUT12)

The MAX16047 includes twelve programmable outputs,

and the MAX16049 includes eight programmable out-

puts. These outputs are capable of connecting to either

the enable (EN) inputs of a DC-DC or LDO power supply

or to the gates of series-pass MOSFETs for closed-loop

tracking mode, or for charge-pump mode. Selectable

output configurations include: active-low or active-high,

open-drain or push-pull. EN_OUT1–EN_OUT4 are also

configurable for closed-loop tracking, and EN_OUT1–

EN_OUT6 can act as charge-pump outputs with no

closed-loop tracking. Use the registers r1Fh to r22h to

configure outputs. See Table 8 for detailed information

on configuring EN_OUT1–EN_OUT12.

Table 7. FAULT1 and FAULT2 Output Configuration and Dependencies (continued)

EEPROM

ADDRESS

BIT RANGE DESCRIPTION

[0] 1 = FAULT2 is a digital output dependent on MON9*

[1] 1 = FAULT2 is a digital output dependent on MON10*

[2] 1 = FAULT2 is a digital output dependent on MON11*

[3] 1 = FAULT2 is a digital output dependent on MON12*

[4]

1 = FAULT2 is a digital output that depends on the overvoltage thresholds at the input

selected by r17h and r18h[3:0]

[5]

1 = FAULT2 is a digital output that depends on the undervoltage thresholds at the

input selected by r17h and 18h[3:0]

[6]

1 = FAULT2 is a digital output that depends on the early warning thresholds at the

input selected by r17h and r18h[3:0]

18h

[7]

0 = FAULT2 is an active-low digital output

1 = FAULT2 is an active-high digital output

MAX16047 only

12-Channel/8-Channel EEPROM-Programmable

System Managers with Nonvolatile Fault Registers

______________________________________________________________________________________ 23

MAX16047/MAX16049

12-Channel/8-Channel EEPROM-Programmable

System Managers with Nonvolatile Fault Registers

24 ______________________________________________________________________________________

Table 8. EN_OUT1–EN_OUT12 Configuration

EEPROM

ADDRESS

BIT RANGE DESCRIPTION

[2:0]

EN_OUT1 Configuration:

000 = EN_OUT1 is an open-drain active-low output

001 = EN_OUT1 is an open-drain active-high output

010 = EN_OUT1 is a push-pull active-low output

011 = EN_OUT1 is a push-pull active-high output

100 = EN_OUT1 is used in closed-loop tracking

101 = EN_OUT1 is configured with a charge-pump output (MON1 + 5V) capable of driving an

external n-channel MOSFET

110 = Reserved

111 = Reserved

[5:3]

EN_OUT2 Configuration:

000 = EN_OUT2 is an open-drain active-low output

001 = EN_OUT2 is an open-drain active-high output

010 = EN_OUT2 is a push-pull active-low output

011 = EN_OUT2 is a push-pull active-high output

100 = EN_OUT2 is used in closed-loop tracking

101 = EN_OUT2 is configured with a charge-pump output (MON2 + 5V) capable of driving an

external n-channel MOSFET

110 = Reserved

111 = Reserved

1Fh

[7:6]

EN_OUT3 Configuration (LSBs):

000 = EN_OUT3 is an open-drain active-low output

001 = EN_OUT3 is an open-drain active-high output

010 = EN_OUT3 is a push-pull active-low output

011 = EN_OUT3 is a push-pull active-high output

100 = EN_OUT3 is used in closed-loop tracking

101 = EN_OUT3 is configured with a charge-pump output (MON3 + 5V) capable of driving an

external n-channel MOSFET

110 = Reserved

111 = Reserved

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P45 P46-P48 P49-P51 P52-P54 P55-P57 P58-P60 P61-P61

MAX16047ETN+T

Mfr. #:

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Manufacturer:

Maxim Integrated

Description:

Supervisory Circuits 12Ch EEPROM Prob System Manage

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MAX16047ETN+T

MAX16047ETN+T

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