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UM824
ACTIVE

Key Specifications
Product Description
Features
Applications
Pin Configurations
Ordering Information
Key Specifications
  • Part Number

    UM824

  • Status

    ACTIVE

  • Watchdog

    Yes

  • Output driver type/Reset outpt

    Push-pull, Active-low / Active-high

  • Manual Reset Input

    No

  • PFI Option

    No

  • Typical Threshold Voltage (V)

    2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63

  • VCC Range (V)

    1 to 5.5

  • Iq(typ) (mA)

    0.004

  • Time delay (ms)

    200

  • Features

    Watchdog, Active-low / Active-high output type

  • Operating Temperature Range (℃)

    -40 to 85

  • Package

    SOT353, SOT23-5

  • Product Description

    The UM824 is cost effective system power supply supervisory circuit designed to monitor the power supplies in digital systems. The device provides circuit initialization and timing supervision. Independent watchdog monitoring circuitry is included. The device significantly improves system reliability and accuracy compared to separate ICs or discrete components.

    The UM824 is specifically designed to ignore fast transients on VCC. Seven preprogrammed reset threshold voltages are available. The device has an active-low reset output, which is guaranteed to be in the correct state for VCC down to 1V. The UM824 also offers a watchdog input and a complementary active-high reset.

    Features

    - Wide Operation Voltage Range of 1V to 5.5V

    - Correct Logic Output Guaranteed to VCC=1.0V

    - Precision Supply-Voltage Monitor: 2.19V, 2.63V, 2.93V, 3.08V, 4.38V, 4.63V

    - 200ms Reset Pulse Width

    - Independent Watchdog Timer-1.6s Timeout

    - Operating Current:

    -- 4礎 for L/M

    -- 3礎 for T/S/R/Z/Y

    - Temperature Range: -40癈 to +85癈

    - Power-Supply Transient Immunity

    - SOT23-5 and SOT353 packages

    Applications

    - Applications Using DSPs, Microcontrollers or Microprocessors

    - Programmable Controls

    - Computers

    - Embedded Systems

    - Industrial Equipments

    - Intelligent Instruments

    - Wireless Communications Systems

    Pin Configurations
    Ordering Information
    Part NumberPackaging TypeMarking CodeShipping Qty
    UM824xSSOT23-524x3000pcs/7Inch Tape & Reel
    UM824xPSOT3534xP3000pcs/7Inch Tape & Reel