CAT140029TWI-G

Supervisors Overview

The CAT140029TWI-G is a voltage supervisory circuit manufactured by onsemi, designed for monitoring power supply integrity in electronic systems. It operates within a supply voltage range of 2.5 V to 5.5 V and features selectable threshold voltages of 2.5 V, 3 V, 3.3 V, or 5 V. The device includes specific overvoltage and undervoltage thresholds, measured at 3.11 V and 3.04 V respectively. It consumes a typical operating current of 1 mA and functions reliably across an extended temperature range from -40°C to +85°C. Packaged in an SOIC-8 surface-mount format, this component integrates I2C communication capabilities with 2-kb memory support.

Supervisors Feature Summary

• Integrates system power supervision with brown-out protection to prevent microcontroller or peripheral malfunction during voltage anomalies.
• Provides active reset signals when monitored supply voltages exceed defined tolerance limits, ensuring system stability.
• Supports I2C serial interface for configuration and status monitoring within the supervisory circuit architecture.

Supervisors Applications

• Microcontroller-based system power management
• ASIC power supply monitoring
• Peripheral device voltage supervision

Supervisors Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm RoHS compliance status via official documentation. Check manufacturing date codes and lot traceability records. Ensure storage conditions meet specified humidity and temperature requirements. Validate package marking against official datasheet specifications before integration.

Supervisors Selection Notes

Evaluate threshold voltage options against target system supply rails to ensure accurate detection of under-voltage and over-voltage events. Consider the SOIC-8 package dimensions for PCB layout constraints. Assess operating current consumption relative to system power budget. Verify temperature range compatibility with intended environmental conditions. Confirm I2C interface compatibility with host controller protocols.

Supervisors Part Context

This component belongs to the CAT14002 series of supervisory circuits from onsemi. These devices combine voltage monitoring with non-volatile memory functionality, offering integrated solutions for system reliability. The series targets applications requiring precise power management and data retention capabilities in compact surface-mount packages.

Supervisors Replacement Considerations

CAT140021SWI-G: Similar supervisory circuit with comparable voltage ranges and SOIC-8 packaging. Verify threshold voltage alignment and I2C interface compatibility before substitution.