MAX6362LUT26-T Maxim Integrated, MAX6362LUT26-T Datasheet

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MAX6362LUT26-T

Manufacturer Part Number
MAX6362LUT26-T
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX6361, MAX6362, MAX6363, MAX6364r
Datasheet

Specifications of MAX6362LUT26-T

Number Of Voltages Monitored
1
Monitored Voltage
2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
2.55 V
Overvoltage Threshold
2.7 V
Output Type
Active Low, Push-Pull
Manual Reset
Not Resettable
Watchdog
Watchdog
Battery Backup Switching
Backup
Power-up Reset Delay (typ)
280 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23
Chip Enable Signals
No
Maximum Power Dissipation
696 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
15 uA
Supply Voltage - Min
0 V
19-1615; Rev 4; 10/11
Selector Guide appears at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
The MAX6361–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 significantly
improve system reliability and accuracy compared to that
obtainable with separate ICs or discrete components.
Their functions include µP 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).
Pin Configurations continued at end of data sheet.
TOP VIEW
Computers
Controllers
Intelligent Instruments
Critical µP/µC
Power Monitoring
RESET, RESET
SOT23, Low-Power µP Supervisory Circuits
GND
MR
________________________________________________________________ Maxim Integrated Products
1
2
3
General Description
SOT23-6
MAX6361
Pin Configurations
Fax Machines
Industrial Control
POS Equipment
Portable/Battery-Powered
Equipment
6
5
4
Applications
BATT
OUT
V
CC
o Low +1.2V Operating Supply Voltage
o Precision Monitoring of +5.0V, +3.3V, +3.0V, and
o Debounced Manual Reset Input (MAX6361)
o Watchdog Timer with 1.6s Timeout Period
o Battery-On Output Indicator (MAX6363)
o Auxiliary User-Adjustable RESET IN (MAX6364)
o Three Available Output Structures
o RESET/RESET Valid Down to 1.2V Guaranteed
o Power-Supply Transient Immunity
o 150ms (min) Reset Timeout Period
o Small 6-Pin SOT23 Package
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.
MAX6361LUT_ _-T
MAX6361PUT_ _-T
MAX6361HUT_ _-T
MAX6362LUT_ _-T
MAX6362PUT_ _-T
MAX6362HUT_ _-T
MAX6363LUT_ _-T
MAX6363PUT_ _-T
MAX6363HUT_ _-T
MAX6364LUT_ _-T
MAX6364PUT_ _-T
MAX6364HUT_ _-T
(V
+2.5V Power-Supply Voltages
(MAX6362)
(V
SUFFIX
CC
CC
Push-Pull RESET, Open-Drain RESET,
Open-Drain RESET
with Battery Backup
46
44
31
29
26
23
PART
or V
or V
BATT
BATT
)
)
MIN
4.50
4.25
3.00
2.85
2.55
2.25
RESET THRESHOLD RANGES (V)
-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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
TYP
4.63
4.38
3.08
2.93
2.63
2.32
PIN-PACKAGE
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6 SOT23
Features
MAX
4.75
4.50
3.15
3.00
2.70
2.38
1

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MAX6362LUT26-T Summary of contents

Page 1

... 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. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. with Battery Backup o Low +1 ...

Page 2

... SOT23, Low-Power µP Supervisory Circuits with Battery Backup ABSOLUTE MAXIMUM RATINGS Terminal Voltages (with respect to GND BATT, OUT.......................................................-0.3V to +6V CC RESET (open drain), RESET (open drain) ................-0.3V to +6V BATT ON, RESET (push-pull), RESET IN, WDI.......................................................-0. .............................................................-0. Input Current V Peak ............................................................................ Continuous ............................................................250mA CC BATT Peak ....................................................................250mA BATT Continuous ...

Page 3

... SOT23, Low-Power µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued +2.4V to +5.5V 3V BATT noted.) (Note 1) PARAMETER SYMBOL V RESET Output Voltage V RESET Output Voltage V RESET, RESET Output Leakage Current MANUAL RESET (MAX6361 only) MR Input Voltage Pull-Up Resistance Minimum Pulse Width Glitch Immunity MR to Reset Delay ...

Page 4

... SOT23, Low-Power µP Supervisory Circuits with Battery Backup (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE (NO LOAD BATT -40 - TEMPERATURE (° OUT ON-RESISTANCE CC vs. TEMPERATURE 1 2. 25mA OUT 0 3. 65mA OUT 150mA OUT 0 ...

Page 5

... SOT23, Low-Power µP Supervisory Circuits (T = +25°C, unless otherwise noted.) A BATTERY SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.93V 2.8V BATT 2.5V BATT 2.3V BATT (V) CC PIN NAME Active-High Reset Output. RESET is continuously high when V low, or RESET IN is low. It asserts in pulses when the internal watchdog times out. RESET remains high ...

Page 6

... SOT23, Low-Power µP Supervisory Circuits with Battery Backup Detailed Description The Typical Operating Circuit shows a typical connection for the MAX6361–MAX6364 family. OUT powers the stat- ic random-access memory (SRAM). OUT is internally connected greater than the reset thresh old the greater of V ...

Page 7

... R2 = 100kΩ, and calculate R1 = 273kΩ. A µP’s reset input starts the µ known state. The MAX6361–MAX6364 µP supervisory circuits assert a reset to prevent code-execution errors during power- up, power-down, and brownout conditions. RESET is guaranteed logic low or high depending on the device chosen (see Ordering Information ) ...

Page 8

... SOT23, Low-Power µP Supervisory Circuits with Battery Backup Watchdog Software Considerations (MAX6362 Only) To help the watchdog timer monitor software execution more closely, set and reset the watchdog input at dif- ferent points in the program, rather than “pulsing” the watchdog input low-high-low. This technique avoids a “ ...

Page 9

... MAX6361PUT_ _  MAX6361HUT_ _ MAX6362LUT_ _ MAX6362PUT_ _ MAX6362HUT_ _ MAX6363LUT_ _ MAX6363PUT_ _ MAX6363HUT_ _ MAX6364LUT_ _ MAX6364PUT_ _ MAX6364HUT_ _ TOP PART MARK MAX6361LUT23 AAEI MAX6362LUT23 MAX6361LUT26 AAEH MAX6362LUT26 MAX6361LUT29* AAEG MAX6362LUT29* MAX6361LUT31 AAEF MAX6362LUT31 MAX6361LUT44 AAEE MAX6362LUT44 MAX6361LUT46* AAED MAX6362LUT46* MAX6361PUT23 AAEO MAX6362PUT23 MAX6361PUT26 AAEN MAX6362PUT26 MAX6361PUT29* AAEM MAX6362PUT29* ...

Page 10

... SOT23, Low-Power µP Supervisory Circuits with Battery Backup TOP VIEW RESET, RESET 1 MAX6362 GND 2 WDI 3 SOT23-6 Typical Operating Circuit 2.4V TO 5.5V UNREGULATED DC VOLTAGE 0.1µ RESET RESET IN R2 MAX6364 OUT BATT 3.6V Li+ BATTERY GND 0.1µF 10 ______________________________________________________________________________________ Pin Configurations (continued) RESET, RESET BATT MAX6363 ...

Page 11

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 11 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products ...

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