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ADM6824:  Low Voltage Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23

Product Details

Product Status:Pre-Release

The ADM6823/ADM6824/ADM6825 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button through a manual reset input. The parts feature different combinations of watchdog input and manual reset input and output stage configurations, as shown in Table 1 in the datasheet.

Each part is available in nine reset threshold options, ranging from 1.58 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (minimum) and 1.6 sec (typical), respectively.

The ADM6823/ADM6824/ADM6825 are available in 5-lead SOT-23 packages and typically consume only 7 μA, making them suitable for use in low power, portable applications.

  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment


  • Precision Low Voltage Monitoring
  • 9 reset threshold options: 1.58 V to 4.63 V
  • 140 ms (min) Reset Timeout
  • Reset Output Stages
    Active low/high Push-pull
  • Low Power Consumption (7 μA)
  • Guaranteed Reset Output Valid to VCC = 1 V
  • Power Supply Glitch Immunity
  • Specified from −40°C to +125°C
  • 5-lead SOT-23 Package

Functional Block Diagram for ADM6824

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