SBASAW1A September   2023  – December 2023 AMC21C12

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information 
    5. 5.5 Package Characteristics
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics 
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog Input
      2. 6.3.2 Reference Input
      3. 6.3.3 Isolation Channel Signal Transmission
      4. 6.3.4 Open-Drain Digital Output
        1. 6.3.4.1 Transparent Output Mode
        2. 6.3.4.2 Latch Output Mode
      5. 6.3.5 Power-Up and Power-Down Behavior
      6. 6.3.6 VDD1 Brownout and Power-Loss Behavior
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Overcurrent Detection
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Overvoltage Detection
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DEN|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.3.6 VDD1 Brownout and Power-Loss Behavior

Brownout is a condition where the VDD1 supply droops below the specified operating voltage range but the device remains functional. Power-loss is a condition where the VDD1 supply drops below a level where the device stops being functional. Depending on the duration and the voltage level, a brownout condition may or may not be noticeable at the output of the device. A power-loss condition is always signaled on the output of the isolated comparator.

Figure 7-16 through Figure 6-13 show typical brownout and power-loss scenarios.

In Figure 7-16, VDD1 droops below the undervoltage detection threshold (VDD1UV) but recovers before the high-side-fault detection delay time (tHS,FLT) expires. The brownout event has no effect on the comparator output.

In Figure 7-17, VDD1 droops below the undervoltage detection threshold (VDD1UV) for more than the high-side-fault detection delay time (tHS,FLT). The brownout condition is detected as a fault and the output is pulled low after a delay equal to tHS,FLT. The device resumes normal operation as soon as VDD1 recovers above the VDD1UV threshold.

GUID-20211201-SS0I-TR7B-QPBN-PVM8PHCTSV1K-low.svgFigure 6-11 Output Response to a Short Brownout Event on VDD1
GUID-20211201-SS0I-HK5M-QX47-HCM73SHJNW4W-low.svgFigure 6-12 Output Response to a Long Brownout Event on VDD1

In Figure 6-13, VDD1 droops below the power-on-reset (POR) threshold (VDD1POR). The power-loss condition is detected as a fault and the output is pulled low after a delay equal to tHS,FLT. The device resumes normal operation after a delay equal to tHS,STA + tHS,BLK after VDD1 recovers above the VDD1UV threshold.

GUID-20211201-SS0I-TZNF-VRTP-MGPXZZ2WMVF7-low.svg Figure 6-13 Output Response to a Power-Loss Event on VDD1