ADCMP671 AD [Analog Devices], ADCMP671 Datasheet - Page 15

• Manufacturer Part Number: ADCMP671
• Description: Low Power, Adjustable UV and OV Monitor
• Manufacturer: AD [Analog Devices]

Data Sheet
OUTPUTS
The PWRGD output is used to indicate supply power good for
the rail being monitored. It asserts if the monitored voltage falls
within the UV and OV threshold window. The OV output acts
as a dedicated overvoltage indication output, allows the board
manager to take decisive action to protect the system from
overvoltage faults. Both outputs are open-drain and can be
pulled up to voltages above V
sinking current up to 40 mA.
In the multisupply monitoring application, multiple
can be used with their OV pin tied together to generate a single
overvoltage fault alert signal, as shown in
up and power down, the power management processor of the
board can manage supply sequencing based on PWRGD signals.
In the event of supply overvoltage fault, the processor can react
quickly to the provide necessary circuit protection because of its
dedicated
supply from combining the information on the PWRGD pins.
This allows the processor to use the N + 1 input pins to
individually monitor N channels of supplies.
OV alert. The processor is also able to identify the faulty
DD
. These outputs are capable of
Figure 35
. During power
ADCMP671
Rev. 0 | Page 15 of 16
2.5V
1.8V
1.0V
0.9V
Figure 35. N Rails Monitoring with N + 1 Processor I/O
ADCMP671
ADCMP671
ADCMP671
ADCMP671
PWRGD
OV
PWRGD
OV
PWRGD
OV
PWRGD
OV
2.5V GOOD
1.8V GOOD
1.0V GOOD
0.9V GOOD
OV FAULT
MANAGER
BOARD
ADCMP671