Low Voltage, High Accuracy,
Quad Voltage μP Supervisory Circuit
Preliminary Technical Data
ADM6710
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Accurate monitoring of up to four power supply voltages
5 reset threshold options: 1.8 V to 5 V
Monitors down to 0.62 V (1.5% accuracy)
200 ms typical reset timeout
IN
1
ADM6710
IN , V
CC
2
IN ,
2
V
CC
RESET
Open-drain
output (10 μA internal pull-up)
RESET
Reset output stage: active low, valid to IN1 = 1 V or IN2 = 1 V
Low power consumption (35 μA)
Power supply glitch immunity
200ms
TIMEOUT
IN
3
UVLO
Specified from −40º C to +85 ºC
6-lead SOT-23 package
IN
4
APPLICATIONS
0.62V REF
Microprocessor systems
Desktop and notebook computers
Controllers
Figure 1.
Data storage equipment
Servers/workstations
GENERAL DESCRIPTION
The ADM6710 output remains valid as long as IN1 or IN2
exceeds 1V, while for the ADM6710Q the output remains valid
as long as VCC exceeds 2 V.
The ADM6710 is a low voltage, high accuracy supervisory
circuit. This device monitors up to four system supply voltages.
If a monitored power supply voltage falls below the minimum
voltage threshold, a single active low output asserts, triggering a
system reset. The output is open drain with a weak internal
pull-up to the monitored IN2 supply (or to VCC in the case of the
ADM67109Q) of typically 10 μA. Once all voltages rise above
the selected threshold level, the reset signal remains low for the
reset timeout period (200 ms typical).
The ADM6710 incorporates a variety of internally pretrimmed
undervoltage threshold options for monitoring 5.0 V, 3.3 V, 3.0
V, 2.5 V and 1.8 V supply voltages. The device offers up to three
adjustable thresholds for monitoring voltages down to 0.62 V.
The ADM6710 is available in a 6-lead SOT-23 package and is
suitable for use in a variety of voltage monitoring applications.
Rev. PrB
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