DS1836A-5+

Supervisors Overview

The DS1836A-5+ is a MicroManager supervisory circuit designed for 5V systems. It integrates a precision temperature-compensated reference, voltage sensor, and power-fail comparator to monitor VCC status. The device features an internal power switch that automatically transitions to a battery supply when VCC drops below 3.8V, ensuring system continuity. It asserts a reset signal during out-of-tolerance conditions and maintains the reset active for 350 ms after VCC returns to normal operation.

Supervisors Feature Summary

• Integrates voltage monitoring, power-fail detection, and automatic battery backup switching in a single package
• Provides precise power-on reset with a fixed 350 ms timeout duration upon power restoration
• Features a true 3V operation power switch for seamless transition between main and backup supplies

Supervisors Applications

• Systems requiring dual power supply management
• PIC microprocessor applications
• Embedded systems needing reliable power-fail protection

Supervisors Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm RoHS compliance status and check current lifecycle status as availability may be limited. Ensure the specific suffix matches the required package and voltage threshold specifications before procurement.

Supervisors Selection Notes

Select this component for designs requiring integrated voltage supervision and automatic battery switchover without discrete components. Verify that the 3.8V switch threshold and 350 ms reset delay align with system timing requirements. Consider the 8-pin DIP or SOIC package options based on board space constraints.

Supervisors Part Context

The DS1836A-5+ belongs to the MicroManager family of supervisory circuits from Analog Devices/Maxim Integrated. These devices are engineered to simplify power management by combining multiple functions into a compact solution, reducing the need for external discrete components in embedded and industrial applications.

Supervisors Replacement Considerations

DS1236A-5+

Supervisors FAQ

At what voltage does the DS1836A-5+ switch to the battery supply?

The device switches to the battery supply when VCC drops below 3.8V.

How long is the reset maintained after VCC returns to normal?

The reset remains active for 350 ms after VCC exceeds the tolerance threshold.