MAX16055 Datasheet, PDF (6/9 Pages) Maxim Integrated Products – Ultra-Small, Hex Voltage, Microprocessor Supervisor

Ultra-Small, Hex Voltage,
Microprocessor Supervisor
ALL DEVICES ARE POWERED FROM IN1 (3.3V/2.5V); RESET IS VALID IF V_IN1 OR V_IN2 IS GREATER THAN 1V
IN1
3.3V
IN2
ADJ
IN1
IN2
PULLUP
70µA
IN3
ADJ
TIMEOUT
(200ms)
RESET
IN4
1.8V
IN5
UVLO
ADJ
IN6
ADJ
TOL
REF
MR
IN1
MAX16055C
Figure 1. Functional Diagram
Detailed Description
The MAX16055 hex voltage µP supervisory circuit main-
tains system integrity in multisupply systems (Figure 1).
The MAX16055 offers accurate, factory-fixed undervolt-
age threshold options for monitoring very low voltages.
The MAX16055 also offers one to five adjustable thresh-
olds for monitoring voltages down to 0.5V. See the
Selector Guide for the available threshold options.
The MAX16055 includes an accurate voltage reference,
precision comparators, and a series of accurate internal
resistor-divider networks to set the factory-fixed reset
threshold options for monitoring 3.3V, 3.0V, 2.5V, 1.8V,
1.5V, 1.2V, 1.1V, 1.0V, or 0.9V supplies. The resistor
networks scale the specified IN_ threshold voltages to
match the internal reference voltage. Adjustable thresh-
old options allow the monitored voltage to be connected
to the input of the internal comparator. Use an external
voltage-divider to set the threshold voltage.
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