LTC1699 Series

      The LTC1699 Series(LTC®1699-80, LTC1699-81 and LTC1699-82) are precision (±0.35% max), digitally programmed resistor dividers that comply with Intel 5-bit mobile (LTC1699-80), desktop VRM8.4 (LTC1699-81) and VRM9.0 (LTC1699-82) VID specifications. Each IC can switch the output of a DC/DC converter between two set voltages. The LTC1699-80, LTC1699-81 and LTC1699-82 incorporate safeguards against errors due to bus conflicts. Three open-drain N-channel outputs (CPU_ON, IO_ON and CLK_ON) are provided to turn DC/DC converter supplies on or off via their RUN/SS inputs.
      LTC1699 Series have 7 features. The 1st one is that it is Fully Compliant with Intel 5-Bit Mobile (LTC1699-80) and Desktop VRM8.4 (LTC1699-81) and VRM9.0 (LTC1699-82) VID Specifications.The 2nd one is about  Precision ±0.35% Programmable Resistor Dividerfor Use with 0.8V Referenced DC/DC Converters.The 3rd one is  that two different divider settings can be stored using a 2-Wire SMBus serial interface (Rev 1.1).The 4th one is that built-In safeguards minimize misprogramming due to bus conflicts.The 5th one is about three open-drain pins (CPU_ON, IO_ON, CLK_ON) and a global control pin (VRON)to shutdown or soft-start 3 DC/DC converters simultaneously The 6th one is about PGOOD Pin and 50ms PGOOD Timer The last one is that it is available in MSOP-8 and SSOP-16 package.
      LTC1699 Series can be applied to Intel Desktop Pentium® III Power Supply, Intel Mobile Pentium® Power Supply with Intel SpeedStepTM Technology, Desktop AMD AthlonTM Power Supply, Software Programmable Remote Power Supply and Power Supplies with Voltage Margining.