Voltage detector with sense input and external delay capacitor

The STM1831 is a voltage detector with very low current consumption. It monitors a voltage on a separate input pin (VSEN), which is fully functional even if the monitored voltage goes down to 0 V. In addition, the delay of the output can be adjusted by an external capacitor.

Key Features

  • Voltage monitored on separate sense input VSEN
  • Factory-trimmed voltage thresholds in 100 mV increments from 1.6 V to 5.7 V
  • ±2% voltage threshold accuracy
  • Operating voltage 1.6 V to 6.0 V
  • Open drain output
  • Low supply current of 0.8 μA (typ.)
  • Time delay programmable by external capacitor
  • Power supply transient immunity
  • Available in SOT23-5 package
  • Operating temperature –40 to 85 °C

Circuit Diagram

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circuit_diagram_18180_thumbnail.png

Design

Technical Documentation

Product Specifications
Description Version Size
DS7019 DS7019: Voltage detector with sense input and external delay capacitor 1.1 592 KB
Technical Notes & Articles
Description Version Size
TN0941 TN0941: Reset and supervisor ICs: frequently asked questions (FAQ) 1.0 328 KB

Publications and Collaterals

Flyers
Description Version Size
Resets and supervisors - portfolio overview 1.0 1 MB
Support & Community

Sample & Buy

Part Number Package Packing Type Voltage Reset 1 (V) (typ) Voltage Reset 2 (V) (typ) Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STM1831L24WY6F SOT23-5L Tape And Reel - - -40 85 Active 0.35 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM1831L24WY6F ActiveSOT23-5LIndustrialEcopack3 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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