LTC2933CDHD#PBF

Supervisors Overview

The LTC2933CDHD#PBF is an EEPROM-configurable hex voltage supervisor manufactured by Analog Devices (formerly Linear Technology). It monitors up to six power supply inputs simultaneously using a 16-lead, 5mm x 4mm DFN package. The device features I2C/SMBus programmable over/undervoltage thresholds with guaranteed accuracy of ±1%. It includes two general-purpose inputs and three general-purpose I/Os, supporting manual reset, UV disable, margining, or auxiliary comparator functions. Internal EEPROM stores fault snapshots and configuration data.

Supervisors Feature Summary

• EEPROM-configurable monitoring for up to six independent power supplies
• I2C/SMBus interface for adjustable undervoltage and overvoltage trip points
• General-purpose inputs and outputs configurable for reset, margining, or alert functions
• Internal non-volatile memory retains fault history and configuration settings

Supervisors Applications

• Multi-rail system power supervision
• Industrial control board voltage monitoring
• Telecommunications equipment power integrity checks
• Embedded systems requiring configurable fault logging

Supervisors Procurement Notes

Verify the specific suffix CDHD corresponds to the 16-lead DFN package variant when sourcing. Confirm that the manufacturer designation aligns with Analog Devices, as Linear Technology was acquired. Ensure the component meets RoHS compliance standards required for your assembly process. Cross-reference the datasheet revision to confirm pinout compatibility with your PCB layout design.

Supervisors Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required with high threshold accuracy. The I2C interface allows dynamic adjustment of trip points without external resistors. Consider the internal EEPROM capability if persistent fault logging is necessary for system diagnostics. Evaluate the available general-purpose pins for additional system control or status reporting needs.

Supervisors Part Context

This part belongs to the LTC2933 family of programmable voltage supervisors. It shares functional similarities with other multi-channel monitors but distinguishes itself through its EEPROM-based configurability and I2C interface. The DFN package offers a compact footprint suitable for space-constrained designs compared to larger SOIC or SSOP alternatives in the same product line.

Supervisors Replacement Considerations

Direct substitutes include other variants within the LTC2933 family such as the LTC2933CGN#TRPBF, which utilizes an SSOP-16 package instead of DFN. Verify package dimensions and thermal characteristics when swapping between DFN and SSOP versions. Ensure the replacement maintains the same I2C addressability and EEPROM functionality for seamless integration.