GENERAL DEscriptION

The SGM803B, SGM809B and SGM810B 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 240ms reset assertion, which keeps the microprocessor in the reset state until the condition is stable.

The SGM803B has an active-low open-drain nRESET output. The SGM809B has an active-low push-pull nRESET output and the SGM810B has an active-high push-pull RESET output. These devices provide five reset threshold voltage options for 3V, 3.3V and 5V voltage monitoring.

The devices all have a low current of 300nA (TYP). And the glitch immunity within the reset comparator protects it from fast transients on VCC.

The SGM803B, SGM809B and SGM810B are available in Green SOT-23-3 and SOT-23 packages. They operates over a junction temperature range of -40℃ to +125℃.

PIN CONFIGURATIONS

FEATURES

• Superior Upgrade for MAX803/MAX809/MAX810 and ADM803/ADM809/ADM810

• High Accuracy Fixed Detection Options: 3V, 3.3V and 5V

• Low Supply Current: 300nA (TYP)

• 150ms (MIN) Power-on Reset Pulse Width

• Reset Output Options: Open-Drain nRESET Output

• Reset Valid Down to VCC = 1V

• Fully Specified over Temperature

• VCC Transient Immunity

• -40℃ to +125℃ Operating Temperature Range

• Available in Green SOT-23-3 and SOT-23 Packages

APPLICATIONS

Battery-Powered Applications

Microprocessor Systems

Portable Equipment

Safety Systems

Intelligent Instruments