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SGM823A

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Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset

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The SGM823A is a complete microprocessor supervisory device which combines reset, watchdog and manual reset functions in a SOT-23-5 package. System reliability is significantly improved by such integration compared to the designs with individual ICs or discrete components. The SGM823A also features an excellent transient immunity to ignore fast VCC transients.

This device has an active-low reset output (nRESET) that is activated by a logic low on the manual reset input (nMR), a watchdog expiry event or due to a low VCC voltage. The nRESET output is guaranteed to be in the correct logic state even if VCC falls down to 1V. The SGM823A is offered in three fixed VCC reset threshold voltages.

The SGM823A is available in a Green SOT-23-5 package. It operates over an ambient temperature range of -40 to +125.

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FEATURES
  • Ultra-Low Supply Current: 0.64μA (TYP)

  • Precision Supply-Voltage Monitor

    2.19V for SGM823A-Y

    1.67V for SGM823A-W

    1.58V for SGM823A-V

  • Guaranteed nRESET Valid at VCC = 1V

  • Push-Pull nRESET Output

  • Reset Pulse Width: 200ms (TYP)

  • Debounced TTL/CMOS-Compatible

  • Manual Reset Input

  • Watchdog Timer with 1.6s (TYP) Timeout

  • Fully Specified over Temperature

  • Power-Supply Transient Immunity

  • Watchdog Timer with 1.6s Timeout

  • Without External Components

  • -40 to +125 Operating Temperature Range

  • Available in a Green SOT-23-5 Package

APPLICATIONS

Computers

Portable Equipment

Automotive Equipment

Intelligent Instruments

Critical μP Power Monitoring

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM823A-VXN5G/TR
Active
SOT-23-5
5
Yes
YesYesYesMSL1
-40℃ to +125℃
View
View
1-24 units : $0.84/unit
25-99 units : $0.72/unit
100-249 units : $0.6/unit
250-499 units : $0.48/unit
500-999 units : $0.42/unit
1000-9999 units : $0.312/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 91 days
SGM823A-WXN5G/TR
Active
SOT-23-5
5
Yes
YesYesYesMSL1
-40℃ to +125℃
View
View
1-24 units : $0.84/unit
25-99 units : $0.72/unit
100-249 units : $0.6/unit
250-499 units : $0.48/unit
500-999 units : $0.42/unit
1000-9999 units : $0.312/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 91 days
SGM823A-YXN5G/TR
Active
SOT-23-5
5
Yes
YesYesYesMSL1
-40℃ to +125℃
View
View
1-24 units : $0.84/unit
25-99 units : $0.72/unit
100-249 units : $0.6/unit
250-499 units : $0.48/unit
500-999 units : $0.42/unit
1000-9999 units : $0.312/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 91 days

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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