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  • SGM850

SGM850

Active

Precision Voltage Supervisor with Programmable Window Watchdog Timer

fileSGM850.pdf
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The SGM850 has an exact windowed voltage supervisor with 1.4% accuracy for both over-voltage (VIT + OV) and under-voltage (VIT - UV) thresholds over the temperature from -40℃ to +125℃. It also possesses accurate hysteresis on both thresholds for some systems that need small tolerance. The device output (nRESET) delay can either be determined by factory default settings, or be determined by the external capacitor at CRST pin. 

The SGM850 has an adjustable watchdog timer and a special watchdog output (nWDO). The nWDO can be used to locate the fault causes. The watchdog timeout period can either be determined by factory default settings, or be determined by the external capacitor at CWD pin. The watchdog function can be closed through SETx (x = 0, 1) pin to prevent some specific watchdog timeout events. 

The SGM850 is available in a Green TDFN-3×3-10AL package.

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FEATURES
  • High Threshold Accuracy: 1.4% (MAX)
  • Precision Over-Voltage and Under-Voltage Monitoring:
    • Voltage Rails from 0.4V to 5.0V
    • Fault Windows Threshold: ±4% for SGM850A and ±7% for SGM850B
    • 0.7% Hysteresis
  • Factory-Programmed Precision Watchdog and Reset Timers:
    • ±15% Accurate Watchdog and Reset Delays
  • Watchdog Disable Feature
  • Adjustable Watchdog Timeout Period
  • Adjustable Reset Delay
  • Operating Voltage Range: 1.6V to 6.5V
  • Low Supply Current: 9μA (TYP)
  • Active-Low, Open-Drain Outputs
  • Available in a Green Small TDFN-3×3-10AL Package
APPLICATIONS

Storage Area Network
HVAC Controller
Infusion Pump
Ultrasound Scanner
Robot Servo Drive
Active Antenna System mMIMO (AAS)

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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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Copyright © 2025 SG MICRO CORP All rights reserved.
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)
SGM850A-0.4XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-0.9XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-1.2XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-1.8XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-2.5XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-3.0XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-3.3XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850A-5.0XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-0.4XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-0.9XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-1.2XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-1.8XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-2.5XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-3.0XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-3.3XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM850B-5.0XTGZ10G/TR
Active
TDFN-3×3-10AL
10
YES
YESYESYESMSL1
-40℃ to +125℃
View
View
1-24 units : $0.875/unit
25-99 units : $0.75/unit
100-249 units : $0.625/unit
250-499 units : $0.5/unit
500-999 units : $0.4375/unit
1000-9999 units : $0.325/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 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.