ADM6315:  Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143

The ADM6315 is a reliable voltage-monitoring device that is suitable for use in most voltage-monitoring applications.

The ADM6315 is designed to monitor as little as a 1.8% degradation ...More

ADM6315:  Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143

Product Description

The ADM6315 is a reliable voltage-monitoring device that is suitable for use in most voltage-monitoring applications.

The ADM6315 is designed to monitor as little as a 1.8% degradation of a power supply voltage. The ADM6315 can monitor all voltages (at 100 mV increments) from 2.5 V to 5 V.

Included in this circuit is a debounced manual reset input. RESET can be activated using an ordinary switch (pulling MR low), a low input from another digital device, or a degradation of the supply voltage.

The manual reset function is very useful, especially if the circuit in which the ADM6315 is operating enters into a state that can be detected only by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked-up system.

The ADM6315 is available in a cost- and space-efficient SOT-143 package.

Applications

  • Microprocessor systems
  • Controllers
  • Intelligent instruments
  • Automotive systems
  • Safety systems
  • Portable instruments

    • Data Sheet, Rev. E, 9/07

    Features

    • Specified over temperature
    • Low power consumption (5 μA typical)
    • Precision voltage monitor of voltages from 2.5 V to 5 V at 100 mV increments
    • Reset assertion down to VCC > 1 V
    • Reset timeout periods: 1 ms, 20 ms, 140 ms, or 1120 ms (minimum)
    • Built-in manual reset
    • Pin compatible with the ADM811
    • Available in SOT-143 package

    Diagrams

    ADM6315 Diagram
    Functional Block Diagram for ADM6315

    Specifications

    Watchdog Timer No
    # of Monitored Voltages 1
    Backup-Battery Switch No
    Manual Reset Capability Yes
    Package SOT
    Reset Threshold Summary 6 Options--2.63 to 4.63V
    Reset Output-Stage Active-Low/Open-Drain
    Min Reset Timeout (ms) 1,1120,140,20

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    Part# Reset Threshold Summary Min Reset Timeout (ms) Reset Output-Stage Manual Reset Capability Package Price* (1000-4999)
    ADM1810 4.35V & 4.62V 100 Active-Low/Push-Pull No SC70, SOT $0.46
    ADM1811 4.35V & 4.62V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
    ADM1812 4.35V & 4.62V 100 Active-High/Push-Pull No SC70, SOT $0.46
    ADM1813 4.35V & 4.62V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.39
    ADM1815 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.39
    ADM1816 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
    ADM1817 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.46
    ADM1818 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.45
    ADM6315 6 Options--2.63 to 4.63V 1, 1,120, 140, 20 Active-Low/Open-Drain Yes SOT $0.81
    ADM6319 26 Options--2.5 to 5V 1, 1,120, 140, 20 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT $0.50
    ADM6322 26 Options--2.5 to 5V 1, 1,200, 140, 20 Active-High/Push-Pull, Active-Low/Open-Drain Yes SOT $0.51
    ADM6384 31 Options--1.58 to 5.0V 1, 1,120, 140, 20 Active-Low/Push-Pull Yes SC70 $0.95
    ADM6711 6 Options--2.32 to 4.63V 140 Active-Low/Push-Pull Yes SC70 $0.26
    ADM6713 6 Options--2.32 to 4.63V 140 Active-Low/Open-Drain Yes SC70 $0.28
    ADM6825 9 Options--1.58 to 4.63V 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT -
    ADM698 4.65V 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $1.37
    ADM707 4.65V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC $0.97
    ADM708 4 Options--2.63 to 4.4V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC, SOP