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General Description
The MAX6361/MAX6363/MAX6364 supervisory circuits
reduce the complexity and number of components
required for power-supply monitoring and battery control
functions in microprocessor (μP) systems. The circuits sig-
nificantly improve system reliability and accuracy com-
pared to that obtainable with separate ICs or discrete
components. Their functions include μP reset, backup-
battery switchover, and power failure warning.
The MAX6361/MAX6363/MAX6364 operate from supply
voltages as low as +1.2V. The factory preset reset
threshold voltage ranges from 2.32V to 4.63V (see
Ordering Information
). These devices provide a manual
reset input (MAX6361), battery-on output (MAX6363),
and an auxiliary adjustable reset input (MAX6364). In
addition, each part type is offered in three reset output
versions: an active-low push-pull reset, an active-low
open-drain reset, and an active-high push-pull reset
(see
Selector Guide
at end of data sheet).
Applications
Fax Machines
Industrial Control
POS Equipment
Portable/Battery-Powered
Equipment
Features
o
Low +1.2V Operating Supply Voltage
(V
CC
or V
BATT
)
o
Precision Monitoring of +5.0V, +3.3V, +3.0V, and
+2.5V Power-Supply Voltages
o
Debounced Manual Reset Input (MAX6361)
o
Battery-On Output Indicator (MAX6363)
o
Auxiliary User-Adjustable RESET IN (MAX6364)
o
Three Available Output Structures
Push-Pull
RESET
, Open-Drain
RESET
,
Push-Pull RESET
o
RESET/
RESET
Valid Down to 1.2V Guaranteed
(V
CC
or V
BATT
)
o
Power-Supply Transient Immunity
o
150ms (min) Reset Timeout Period
o
Small 6-Pin SOT23 Package
M
SOT23, Low-Power μP Supervisory Circuits
with Battery Backup
________________________________________________________________
Maxim Integrated Products
1
19-1615; Rev 0; 1/00
Ordering Information
Pin Configurations
Note:
These parts offer a choice of reset threshold voltages.
From Table 1, select the suffix corresponding to the desired
threshold voltage and insert it into the part number to complete
it. When ordering from the factory, there is a 2500-piece mini-
mum on the SOT package (tape-and-reel only).
GND
V
CC
MR
1
6
BATT
5
OUT
RESET, RESET
MAX6361
TOP VIEW
2
3
4
SOT23-6
Computers
Controllers
Intelligent Instruments
Critical μP/μC
Power Monitoring
Selector Guide appears at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
Pin Configurations continued at end of data sheet.
6 SOT23-6
-40°C to +85°C
MAX6364HUT_ _-T
6 SOT23-6
-40°C to +85°C
MAX6364PUT_ _-T
6 SOT23-6
-40°C to +85°C
MAX6364
LUT_ _-T
6 SOT23-6
6 SOT23-6
-40°C to +85°C
-40°C to +85°C
MAX6363HUT_ _-T
MAX6363PUT_ _-T
6 SOT23-6
6 SOT23-6
-40°C to +85°C
-40°C to +85°C
MAX6363
LUT_ _-T
6 SOT23-6
6 SOT23-6
PIN-PACKAGE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
MAX6361HUT_ _-T
MAX6361PUT_ _-T
MAX6361
LUT_ _-T
PART