LTC1699EGN-82#TRPBF

Power Management - Specialized Overview

The LTC1699EGN-82#TRPBF is a precision, digitally programmed resistor divider compliant with Intel VRM9.0 VID specifications. It operates within a supply voltage range of 2.7V to 5.5V and features ±0.35% accuracy for use with 0.8V referenced DC/DC converters. The device utilizes a 2-wire SMBus interface (Rev 1.1) to store two distinct divider settings and control three open-drain outputs (CPU_ON, IO_ON, CLK_ON). It includes safeguards against bus conflicts and a global control pin (VRON) for simultaneous shutdown or soft-start of connected converters.

Power Management - Specialized Feature Summary

• Complies with Intel VRM9.0 VID specifications for precise digital voltage programming
• Stores two programmable resistor divider settings via 2-wire SMBus serial interface
• Provides three open-drain outputs and one global control pin for managing DC/DC converter states
• Incorporates built-in safeguards to minimize misprogramming errors due to bus conflicts

Power Management - Specialized Applications

• Intel Desktop Pentium III power supplies
• VRM9.0 compliant processor voltage regulation modules
• Systems requiring simultaneous shutdown or soft-start of multiple DC/DC converters

Power Management - Specialized Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm compatibility with the target system's SMBus revision 1.1 requirements. Ensure the design supports the required 2.7V to 5.5V supply range. Check for any product change notifications regarding package or material updates from Analog Devices prior to final procurement.

Power Management - Specialized Selection Notes

Select this component for designs strictly adhering to Intel VRM9.0 VID standards. It is suitable for applications requiring dual voltage setting storage and independent control of up to three converter rails. Consider the SSOP-16 package constraints for PCB layout. Verify that the host controller can support the necessary SMBus write word and read word protocols for register configuration and status verification.

Power Management - Specialized Part Context

This part belongs to the LTC1699 series of SMBus VID voltage programmers manufactured by Analog Devices. The series includes variants compliant with different Intel specifications, such as the LTC1699-80 for mobile and LTC1699-81 for VRM8.4 desktop applications. The -82 variant specifically targets VRM9.0 desktop processors, offering high precision and robust control features for modern CPU power delivery systems.

Power Management - Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.