MAX16047 Datasheet, PDF (26/62 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
Table 8. EN_OUT1–EN_OUT12 Configuration (continued)
REGISTER/
EEPROM
ADDRESS
BIT RANGE
DESCRIPTION
[1:0]
EN_OUT10 Configuration*:
00 = EN_OUT10 is an open-drain active-low output
01 = EN_OUT10 is an open-drain active-high output
10 = EN_OUT10 is a push-pull active-low output
11 = EN_OUT10 is a push-pull active-high output
EN_OUT11 Configuration*:
00 = EN_OUT11 is an open-drain active-low output
[3:2]
01 = EN_OUT11 is an open-drain active-high output
22h
10 = EN_OUT11 is a push-pull active-low output
11 = EN_OUT11 is a push-pull active-high output
*MAX16047 only
[5:4]
[7:6]
EN_OUT12 Configuration*:
00 = EN_OUT12 is an open-drain active-low output
01 = EN_OUT12 is an open-drain active high output
10 = EN_OUT12 is a push-pull active-low output
11 = EN_OUT12 is a push-pull active-high output
Reserved
Charge-Pump Configuration
EN_OUT1–EN_OUT6 can act as high-voltage charge-
pump outputs to drive up to six external n-channel
MOSFETs. During sequencing, an EN_OUT_ output
configured this way drives 6µA until the voltage reach-
es 5V above the corresponding MON_ to fully enhance
the external n-channel MOSFET. For example,
EN_OUT2 will rise to 5V above MON2. See the
Sequencing section for more detailed information on
power-supply sequencing.
Closed-Loop Tracking Operation
EN_OUT1–EN_OUT4 can operate in closed-loop track-
ing mode. When configured for closed-loop tracking,
EN_OUT1–EN_OUT4 are capable of driving the gates
of up to four external n-channel MOSFETs. For closed-
loop tracking, configure GPIO1–GPIO4 as return-sense
line inputs (INS_) to be used in conjunction with
EN_OUT1–EN_OUT4 and MON1–MON4. See the
Closed-Loop Tracking section.
Open-Drain Output Configuration
Connect an external pullup resistor from the output to
an external voltage up to 6V (abs max, EN_OUT7–
EN_OUT12) or 12V (abs max, EN_OUT1–EN_OUT6)
when configured as an open-drain output. Choose the
pullup resistor depending on the number of devices
connected to the open-drain output and the allowable
current consumption. The open-drain output configura-
tion allows wire-ORed connection.
Push-Pull Output Configuration
The MAX16047/MAX16049s’ programmable outputs
sink 2mA and source 100µA when configured as push-
pull outputs.
EN_OUT_ State During Power-Up
When V_CC is ramped from 0V to the operating supply
voltage, the EN_OUT_ output is high impedance until
V_CC is approximately 2.4V and then EN_OUT_ will be in
its configured deasserted state. See Figures 3 and 4.
RESET is configured as an active-low open-drain out-
put pulled up to V_CC through a 10kΩ resistor for
Figures 3 and 4.
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