Detailed description – Rainbow Electronics MAX16055 User Manual

Page 6

MAX16055

Ultra-Small, Hex Voltage,
Microprocessor Supervisor

_______________________________________________________________________________________

IN1

3.3V

ALL DEVICES ARE POWERED FROM IN1 (3.3V/2.5V); RESET IS VALID IF V

IN1

OR V

IN2

IS GREATER THAN 1V

IN2

ADJ

IN3

ADJ

MAX16055C

IN4

1.8V

IN5

ADJ

IN6

ADJ

TOL

REF

TIMEOUT

(200ms)

RESET

µA

UVLO

IN1

IN2

PULLUP

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.

Figure 1. Functional Diagram