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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 quiescent 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℃

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)

● Power-on Reset Pulse Width: 150ms (MIN)

● Reset Output Options:

? Open-Drain nRESET Output (SGM803B)

? Push-Pull nRESET Output (SGM809B)

? Push-Pull RESET Output (SGM810B)

● 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