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SGM812B
Microprocessor Supervisory Circuit with Manual Reset Input
Microprocessor Supervisory Circuit with Manual Reset Input
GENERAL DESCRIPTION

The SGM811B and SGM812B are integrated microprocessor supervisory devices which can be reset under power-up, power-down or even voltage reduction brownout conditions. When VCC is as low as 1V, the reset output can still operate. On the power-on state, the internal timer maintains a 200ms reset assertion, which keeps the microprocessor in the reset state until the condition is stable.

The SGM811B has an active-low nRESET output, while the SGM812B has an active-high RESET output. These devices provide three reset threshold voltage options for 3V and 3.3V voltage monitoring.

The devices also provide a manual reset (nMR) function. It can reduce damage if the device loses its control or is locked.

The SGM811B and SGM812B are available in a Green SOT-143 package. They operates over an junction temperature range of -40 to +125.

PIN CONFIGURATIONS

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FEATURES
  • Superior Upgrade for MAX811/MAX812 and ADM811/ADM812

  • High Accuracy Fixed Detection Options: 3V and 3.3V

  • Low Supply Current: < 1μA (TYP)

  • 200ms (TYP) Power-on Reset Pulse Width

  • Reset Output Options: Active-High nRESET Output

  • Manual Reset Input

  • Reset Valid Down to VCC = 1V

  • -40 to +125 Operating Temperature Range

  • Available in a Green SOT-143 Package

APPLICATIONS

Computers

Battery-Powered Applications

Portable Equipment

Automotive Equipment

Safety Systems

Intelligent Instruments

Critical μP Power Monitoring

ORDERING INFORMATION
Part Number Status Package Pins Pb-Free Temp Range
SGM812B-TXKA4G/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM812B-SXKA4G/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM812B-RXKA4G/TR Production SOT-143 4 Y -40℃ to +125℃ Samples