Add Analog Devices LTM4668(A) Quad DC/DC uModule Regulator

Analog Devices LTM4668 and LTM4668A are pin-compatible Quad DC/DC uModule Regulators with 1.2A output arrays. LTM4668 and LTM4668A differ in the output voltage range.

Datasheets:

• LTM4668: https://www.analog.com/media/en/technical-documentation/data-sheets/ltm4668.pdf
• LTM4668A: https://www.analog.com/media/en/technical-documentation/data-sheets/ltm4668a.pdf

Footprint: kicad-footprints!2913 (merged)

KLC violations:

S4.2: Pins should be grouped by function:

• VIN: There are 2 x 2 Pins for VIN at the left and the right of the package which require separate bypass caps.

• INTVCC is an output but the only allowed connection is to tying SYNC/MODE to it or keep it NC; therefore putting it on the right side of the symbol would make the schematic much more complex.

• for the Quad-Module it makes much more sense to group the pins (VOUT, FB, GOOD) by regulator channel.

S4.3: Rules for pin stacking:

Checked this several times and did not find a reason for this message. I found however, for another symbol, that you somehow the order of the pins seems to play a vital rule for this check; also the check-in scripts state "Found non-numeric pin in a pinstack: Pin VOUT1 (A1) @ (800,700)"...

Screenshot: