LTC2928IUHF#PBF

Supervisors Overview

The LTC2928IUHF#PBF is a four-channel cascadable power supply sequencer and supervisor manufactured by Analog Devices Inc. It operates within a voltage range of 2.7V to 14.4V and features adjustable or selectable reset threshold voltages with low-active reset levels. The device is housed in a 38-pin QFN EP package, measuring 5x7 mm, and supports surface mount installation. It functions across an industrial temperature range of -40°C to +85°C, providing precise timing control for multi-rail systems.

Supervisors Feature Summary

• Provides multichannel power supply sequencing and supervision capabilities
• Features cascadable architecture for expanding channel count
• Offers configurable sequencing thresholds, order, and timing

Supervisors Applications

• Multi-rail processor power supply management
• Complex system power-up and power-down sequencing
• Voltage supervisor for critical logic rails

Supervisors Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the operating temperature range matches the application environment requirements. Ensure the 38-pin QFN footprint aligns with the PCB layout design. Check for RoHS compliance status if required by regulatory standards.

Supervisors Selection Notes

Select this component when four independent channels are required for power sequencing. Consider the cascadable feature if more than four channels are needed. Verify that the input voltage range covers all monitored rails. Ensure the package size fits the available board space constraints.

Supervisors Part Context

This part belongs to the LTC2928 series of supervisory circuits. It is designed for applications requiring precise control over multiple power rails. The device integrates both sequencing and supervision functions into a single IC, reducing component count compared to discrete solutions.

Supervisors Replacement Considerations

Check for direct pin-compatible alternatives within the Analog Devices portfolio. Verify functional equivalence regarding channel count and voltage ranges. Review datasheet specifications for timing accuracy differences.