MAX6361 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – SOT23, Low-Power μP Supervisory Circuits with Battery Backup

19-1615; Rev 0; 1/00
SOT23, Low-Power µP Supervisory Circuits
with Battery Backup
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).
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
Computers
Controllers
Intelligent Instruments
Critical µP/µC
Power Monitoring
Applications
Fax Machines
Industrial Control
POS Equipment
Portable/Battery-Powered
Equipment
TOP VIEW
Pin Configurations
RESET, RESET 1
6 BATT
MAX6361
GND 2
5 OUT
Ordering Information
PART
MAX6361LUT_ _-T
MAX6361PUT_ _-T
MAX6361HUT_ _-T
MAX6363LUT_ _-T
MAX6363PUT_ _-T
MAX6363HUT_ _-T
MAX6364LUT_ _-T
MAX6364PUT_ _-T
MAX6364HUT_ _-T
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
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).
MR 3
4 V_CC
SOT23-6
Pin Configurations continued at end of data sheet.
Selector Guide appears at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
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