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ASM1834 - Power Supply Supervisor

General Description

5 V power sources and generate reset signals when either supply is out of tolerance.

of tolerance condition is detected, the output reset signal of the affected supply becomes active and resets the syst

Key Features

  • Monitors 5 V and 3.3 V Supplies Simultaneously.
  • 5 V and 3.3 V Power.
  • on Reset.
  • 350 ms Reset Time.
  • Debounced Pushbutton Reset Input.
  • Push.
  • pull CMOS Output ASM1834, ASM1834D Eliminates External Pull.
  • up Resistors Active LOW (ASM1834), HIGH (ASM1834D).
  • Open Drain Output ASM1834A Active LOW.
  • Selectable 5 V and 3.3 V Trip Point Tolerance.
  • Internal Power Drawn from Highest Input Voltage, 5 V or 3.3 V.

📥 Download Datasheet

Datasheet Details

Part number ASM1834
Manufacturer onsemi
File Size 173.17 KB
Description Power Supply Supervisor
Datasheet download datasheet ASM1834 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ASM1834, ASM1834A, ASM1834D Dual 5 V and 3.3 V mP Power Supply Supervisor with Manual Reset Description The ASM1834 supervisors simultaneously monitor both 3.3 V and 5 V power sources and generate reset signals when either supply is out of tolerance. When an out−of−tolerance condition is detected, the output−reset signal of the affected supply becomes active and resets the system microprocessor/microcontroller. On power−up and after the supply voltage returns to an in−tolerance condition, the reset signal remains active for approximately 350 ms. This allows the power supply and system microprocessor to stabilize. Tolerance levels are independently selectable for both supplies. Tolerance options are 5% and 10% for the 5 V supply and 10% and 20% for the 3.3 V supply.