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MAX6826LUT+MAIXMN/a2500avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6826LUT+TMAIXMN/a2500avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829SFUT+T |MAX6829SFUTTMAXN/a2500avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829TIUT-T |MAX6829TIUTTMAXIMN/a752avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829TIUT-T |MAX6829TIUTTMAXIM ?N/a3686avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829VFUT+ |MAX6829VFUTMAXN/a50avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6829ZWUT+MAXIMN/a1358avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
MAX6831TZUT+T |MAX6831TZUTTMAXIMN/a249avaiDual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer


MAX6829TIUT-T ,Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog TimerFeaturesThe MAX6826–MAX6831 are ultra-low-voltage micro- Monitor Primary V Supplies from +1.8V CCp ..
MAX6829TIUT-T ,Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog TimerELECTRICAL CHARACTERISTICS(V = +4.5V to +5.5V for MAX68_ _L/M, V = +2.7V to +3.6V for MAX68_ _T/S/R ..
MAX6829VFUT+ ,Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog TimerFeaturesThe MAX6826–MAX6831 are ultra-low-voltage micro- Monitor Primary V Supplies from +1.8V CCp ..
MAX6829ZWUT+ ,Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog TimerApplicationsMAX6828 _UT-T -40°C to +125°C 6 SOT23-6 Portable/Battery- Automotive Systems MAX6829_ _ ..
MAX682ESA ,3.3V-Input to Regulated 5V-Output Charge PumpsApplicationsPART TEMP. RANGE PIN-PACKAGEMiniature EquipmentMAX682ESA -40°C to +85°C 8 SOPCMCIA Card ..
MAX682ESA ,3.3V-Input to Regulated 5V-Output Charge Pumpsapplications that demand a compactdesign. The MAX682, MAX683, and MAX684 deliver' 1.1mm Height in µ ..
MB3793-42PNF , POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER
MB3800 ,Switching Regulator Controller (Low Voltage)FEATURES• Wide supply voltage operating range: 1.8 to 15 V• Low current consumption: Typically 5.5 ..
MB3800PFV ,Switching Regulator Controller (Low Voltage)FUJITSU SEMICONDUCTORDS04-27212-2EDATA SHEETASSP For Power Supply
MB3800PNF ,Switching Regulator Controller (Low Voltage)ApplicationsBIPOLARSwitching Regulator Controller(Low Voltage)MB3800n DESCRIPTIONThe MB3800 is a si ..
MB3800PNF ,Switching Regulator Controller (Low Voltage)applications incorporating a soft start function and short circuit detection function. The device h ..
MB3807A ,Power Management Switching IC (with flash memory power switching function)FUJITSU SEMICONDUCTORDS04-27602-1EDATA SHEETASSP Power SupplyBIPOLARPower Management Switching I ..


MAX6826LUT+-MAX6826LUT+T-MAX6829SFUT+T-MAX6829TIUT-T-MAX6829VFUT+-MAX6829ZWUT+-MAX6831TZUT+T
Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
General Description
The MAX6826–MAX6831 are ultra-low-voltage micro-
processor (µP) supervisory circuits designed to monitor
two power supplies and have manual reset and watch-
dog input functions. These devices assert a system reset
if any of the monitored supplies fall below the prepro-
grammed thresholds, and maintain reset for a minimum
timeout period after the supplies rise above the threshold.
Microprocessor supervisors significantly improve system
reliability and accuracy compared to separate ICs or dis-
crete components. These devices monitor primary volt-
ages from +1.8V to +5.0V and secondary voltages from
+0.9V to +2.5V. These devices are guaranteed to be in
the correct state for VCCdown to +1.0V.
A variety of preprogrammed reset threshold voltages
are available (see Threshold Suffix Guide). The devices
include manual reset and watchdog inputs. The
MAX6829/MAX6830/MAX6831 provide a factory-
trimmed threshold to monitor a 2nd voltage down to
+0.9V. The MAX6826/MAX6829 have a push-pull
RESET, the MAX6827/MAX6830 have a push-pull
RESET and the MAX6828/MAX6831 have an open-drainRESET. The MAX6826/MAX6827/MAX6828 have an aux-
iliary monitor that allows user adjustable input to monitor
voltages down to +0.6V.See Selector Guide for func-
tions available.
________________________Applications
Features
Monitor Primary VCCSupplies from +1.8V
to +5.0V and Secondary VCC2Supplies
from +0.9V to +2.5V
User Adjustable RESET IN Down to +0.63V
(MAX6826/MAX6827/MAX6828)
140ms (min) Reset Timeout Delay1.6s Watchdog Timeout PeriodManual Reset InputThree Reset Output Options
Push-Pull RESET
Push-Pull RESET
Open-Drain RESET
Guaranteed Reset Valid Down to VCC= +1.0VImmune to Short Negative VCCTransientsNo External ComponentsSmall 6-pin SOT23 Packages
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer
Pin Configuration

19-1867; Rev 1; 1/02
Ordering Information
Standard Versions Table*

†Insert the desired suffix letter (from Standard Versions table) into
the blanks to complete the part number.
*Samples are typically available for standard versions only.
The MAX6826/MAX6827/MAX6828 require a 2.5k minimum
order increment for all versions. Contact factory for availability.
Portable/Battery-
Powered Equipment
Embedded Controllers
Intelligent Instruments
Automotive Systems
Critical µP Monitoring
Multivoltage Systems
Typical Operating Circuit appears at end of data sheet.
Threshold Suffix Guide appears at end of data sheet.Selector Guide appears at end of data sheet.
Standard Versions Table continued at end of data sheet.
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VCC= +4.5V to +5.5V for MAX68_ _L/M, VCC= +2.7V to +3.6V for MAX68_ _T/S/R, VCC= +2.1V to +2.75V for MAX68_ _Z/Y,
VCC= +1.53V to +2.0V for MAX68_ _W/V; TA= -40°C to +125°C, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC, VCC2to GND.................................................-0.3V to +6.0V
Open-Drain RESET................................................-0.3V to +6.0V
Push-Pull RESET, RESET............................-0.3V to (VCC+ 0.3V)
MR, WDI, RESET IN....................................-0.3V to (VCC+ 0.3V)
Input Current (VCC).............................................................20mA
Output Current (RESET, RESET).........................................20mA
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)..............696mW
Operating Temperature Range.........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer
ELECTRICAL CHARACTERISTICS (continued)

(VCC= +4.5V to +5.5V for MAX68_ _L/M, VCC= +2.7V to +3.6V for MAX68_ _T/S/R, VCC= +2.1V to +2.75V for MAX68_ _Z/Y,
VCC= +1.53V to +2.0V for MAX68_ _W/V; TA= -40°C to +125°C, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer
ELECTRICAL CHARACTERISTICS (continued)

(VCC= +4.5V to +5.5V for MAX68_ _L/M, VCC= +2.7V to +3.6V for MAX68_ _T/S/R, VCC= +2.1V to +2.75V for MAX68_ _Z/Y,
Note 1:
Over-temperature limits are guaranteed by design and not production tested. Devices tested at +25°C.
Note 2:
Guaranteed by design and not production tested.
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer

SUPPLY CURRENT
vs. TEMPERATURE
MAX6826 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (
RESET TIMEOUT PERIOD
vs. TEMPERATURE
MAX6826 toc02
TEMPERATURE (°C)
RESET TIMEOUT PERIOD (ms)
VCC TO RESET OUTPUT DELAY
vs. TEMPERATURE
MAX6826 toc03
TEMPERATURE (°C)
PROPAGATION DELAY (
WATCHDOG TIMEOUT PERIOD
vs. TEMPERATURE
MAX6826 toc04
TEMPERATURE (°C)
WATCHDOG TIMEOUT PERIOD (s)
NORMALIZED RESET THRESHOLD
DELAY vs. TEMPERATURE
MAX6826 toc05
TEMPERATURE (°C)
RESET THRESHOLD (V)
MAXIMUM VCC TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
MAX6826 toc06
RESET THRESHOLD OVERDRIVE (mV), VTH - VCC
TRANSIENT DURATION (
VRSTIN TO RESET OUTPUT DELAY
vs. TEMPERATURE
MAX6826 toc07
TEMPERATURE (°C)
PROPAGATION DELAY (
MAXIMUM VRSTIN TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
MAX6826 toc08
RESET THRESHOLD OVERDRIVE (mV), VRSTINTH - VRSTIN
TRANSIENT DURATION (
Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)
MAX6826
–MAX6831
Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer

VOLTAGE OUTPUT LOW vs. ISINK
MAX6826 toc09
ISINK (mA)
OUT
(V)
Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)
Pin Description
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