MAX6822LUK+T by Analog Devices

Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer


The MAX6821—MAX6825 are low-voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significantly improve system reliability and accuracy compared to separate ICs or discrete components. These devices assert a reset signal whenever the monitored voltage drops below its preset threshold, keeping it asserted for a minimum timeout period after VCC rises above the threshold. In addition, a watchdog timer monitors against code execution errors. A debounced manual reset is also available. The MAX6821—MAX6825 monitor voltages from +1.8V to +5.0V. These outputs are guaranteed to be in the correct state for VCC down to +1.0V. Nine preprogrammed reset threshold voltages are available (see the Threshold Suffix Guide). The MAX6821, MAX6822, and MAX6823 all have a manual reset input and a watchdog timer. The MAX6821 has push-pull RESET, the MAX6822 has open-drain active-low RESET, and the MAX6823 has push-pull active-low RESET. The MAX6824 has a watchdog timer and both push-pull active-low RESET and push-pull RESET. The MAX6825 has a manual reset input and both push-pull active-low RESET and push-pull RESET. The Selector Guide explains the functions offered in this series of parts.

Where to Buy

Prices starting from US$1.93

Distributor Stock
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Farnell
from US$1.93
1,023
in stock
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Newark Electronics
from US$2.12
1,023
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Features

Monitors +1.8V, +2.5V, +3.0V, +3.3V, +5.0V Supplies
140ms (min) Reset Timeout Delay
1.6s Watchdog Timeout Period (MAX6821/MAX6822/MAX6823/MAX6824)
Manual Reset Input (MAX6821/MAX6822/MAX6823/MAX6825)
Three Reset Output Options Push-Pull Active-Low RESET Push-Pull RESET Open-Drain Active-Low RESET
Push-Pull Active-Low RESET
Push-Pull RESET
Open-Drain Active-Low RESET
Guaranteed Reset Valid to VCC = +1.0V
Immune to Short Negative VCC Transients
No External Components
Small 5-Pin SOT23 Packages

Specifications

Reset Thresh. (V) 1.2 to 1.81.8 to 2.52.5 to 3.33.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active LowOpen Drain
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
Supervisor Features Manual Reset
ICC (µA) (max) 16
Package/Pins SOT23/5
BudgetaryPrice (See Notes) 1.73


MAX6822LUK+T Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V SOT-23-5

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Threshold Voltage 4.63V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 1V
Supply Voltage Max 5.5V
Reset Type Active-Low Open-Drain
Digital IC Case SOT-23
No. of Pins 5Pins
Delay Time 200ms
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Mpu Supervisor, 5.5V, Sot-23-5 | Newark Electronics
MPU SUPERVISOR, 5.5V, SOT-23-5 | Farnell

Frequently Asked Questions

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Is the MAX6822LUK+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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