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For small orders, phone 1-800-835-8769.
General Description
The MAX6361–MAX6364 supervisory circuits reduce the
complexity and number of components required for
power-supply monitoring and battery control functions in
microprocessor (P) systems. The circuits significantly
improve system reliability and accuracy compared to that
obtainable with separate ICs or discrete components.
Their functions include P reset, backup battery
switchover, and power failure warning.
The MAX6361–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),
watchdog timer input (MAX6362), 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 open-drain reset, an
active-low open-drain reset, and an active-high open-
drain reset (see Selector Guide at end of data sheet).
Applications
Features
Low +1.2V Operating Supply Voltage
(VCC or VBATT)
Precision Monitoring of +5.0V, +3.3V, +3.0V, and
+2.5V Power-Supply Voltages
Debounced Manual Reset Input (MAX6361)
Watchdog Timer with 1.6s Timeout Period
(MAX6362)
Battery-On Output Indicator (MAX6363)
Auxiliary User-Adjustable RESET IN (MAX6364)
Three Available Output Structures
Push-Pull RESET, Open-Drain RESET,
Open-Drain RESET
RESET/RESET Valid Down to 1.2V Guaranteed
(VCC or VBATT)
Power-Supply Transient Immunity
150ms (min) Reset Timeout Period
Small 6-Pin SOT23 Package
MAX6361–MAX6364
SOT23, Low-Power P Supervisory Circuits
with Battery Backup
________________________________________________________________ Maxim Integrated Products
1
19-1615; Rev 3; 11/05
Ordering Information
Pin Configurations
Note: These parts offer a choice of reset threshold voltages.
From the table below, 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 minimum on the SOT package (tape-and-reel only).
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing "-T" with "+T" when ordering.
GND
VCC
MR
16
BATT
5
OUT
RESET, RESET
MAX6361
TOP VIEW
2
34
SOT23-6
Computers
Controllers
Intelligent Instruments
Critical P/C
Power Monitoring
Fax Machines
Industrial Control
POS Equipment
Portable/Battery-Powered
Equipment
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
MAX6364LUT_ _-T
6 SOT23-6
-40°C to +85°C
6 SOT23-6
-40°C to +85°C
MAX6363HUT_ _-T
MAX6363PUT_ _-T
6 SOT23-6
-40°C to +85°C
6 SOT23-6
-40°C to +85°C
MAX6363LUT_ _-T
6 SOT23-6
PIN-PACKAGE
TEMP. RANGE
-40°C to +85°C
MAX6361HUT_ _-T
6 SOT23-6
-40°C to +85°C
MAX6361PUT_ _-T
MAX6361LUT_ _-T
PART
6 SOT23-6
-40°C to +85°C
MAX6362HUT_ _-T
6 SOT23-6
-40°C to +85°C
MAX6362PUT_ _-T
6 SOT23-6
-40°C to +85°C
MAX6362LUT_ _-T
SUFFIX
MIN
46
4.50
4.63
MAX
TYP
44
4.25
4.38
31
3.00
3.08
4.75
4.50
3.15
23
2.25
29
2.85
2.93
2.32
26
2.55
2.63
2.38
3.00
2.70
RESET THRESHOLD RANGES (V)