Version 4 SHEET 1 2228 1236 WIRE 720 -640 336 -640 WIRE 848 -640 720 -640 WIRE 848 -624 848 -640 WIRE 144 -592 144 -608 WIRE 432 -592 432 -608 WIRE 432 -512 432 -528 WIRE 544 -512 432 -512 WIRE 576 -512 544 -512 WIRE 720 -512 720 -640 WIRE 848 -512 848 -544 WIRE 144 -496 144 -512 WIRE 336 -496 336 -640 WIRE 432 -496 432 -512 WIRE -16 -432 -48 -432 WIRE 672 -432 496 -432 WIRE 576 -416 576 -512 WIRE 576 -336 576 -352 WIRE 576 -336 496 -336 WIRE 576 -320 576 -336 WIRE -160 -240 -320 -240 WIRE -144 -240 -160 -240 WIRE -16 -240 -64 -240 WIRE 576 -240 576 -256 WIRE 576 -240 496 -240 WIRE 720 -240 720 -416 WIRE 720 -240 576 -240 WIRE 960 -240 720 -240 WIRE 992 -240 960 -240 WIRE 1120 -240 1072 -240 WIRE 1136 -240 1120 -240 WIRE 1232 -240 1216 -240 WIRE 1280 -240 1232 -240 WIRE 1392 -240 1280 -240 WIRE 1504 -240 1392 -240 WIRE 720 -224 720 -240 WIRE 960 -224 960 -240 WIRE 1280 -224 1280 -240 WIRE 1392 -224 1392 -240 WIRE 1504 -224 1504 -240 WIRE -320 -192 -320 -240 WIRE -160 -144 -160 -240 WIRE -144 -144 -160 -144 WIRE -16 -144 -64 -144 WIRE 640 -144 496 -144 WIRE 672 -144 640 -144 WIRE 912 -144 896 -144 WIRE 1280 -128 1280 -160 WIRE 1392 -128 1392 -160 WIRE 1504 -128 1504 -144 WIRE 720 -112 720 -128 WIRE 960 -112 960 -128 WIRE -320 -80 -320 -112 WIRE 640 -80 640 -144 WIRE 896 -80 896 -144 WIRE 896 -80 640 -80 WIRE -160 -48 -160 -144 WIRE -144 -48 -160 -48 WIRE -16 -48 -64 -48 WIRE 512 -48 496 -48 WIRE 576 48 496 48 WIRE 624 48 576 48 WIRE 752 48 704 48 WIRE 1120 48 1120 -240 WIRE 1120 48 752 48 WIRE 576 64 576 48 WIRE 576 144 576 128 WIRE 576 144 496 144 WIRE 656 144 576 144 WIRE 1232 144 1232 -240 WIRE 1232 144 656 144 WIRE 752 208 752 48 WIRE -160 240 -160 -48 WIRE -144 240 -160 240 WIRE -48 240 -64 240 WIRE -16 240 -48 240 WIRE 560 240 496 240 WIRE 656 240 656 144 WIRE 656 240 640 240 WIRE -48 256 -48 240 WIRE -160 336 -160 240 WIRE -144 336 -160 336 WIRE -48 336 -64 336 WIRE -16 336 -48 336 WIRE 576 336 496 336 WIRE 752 336 752 288 WIRE 752 336 576 336 WIRE -48 352 -48 336 WIRE 576 352 576 336 WIRE 752 352 752 336 WIRE -160 432 -160 336 WIRE -144 432 -160 432 WIRE -48 432 -64 432 WIRE -16 432 -48 432 WIRE 576 432 576 416 WIRE 576 432 496 432 WIRE 752 432 576 432 WIRE -48 448 -48 432 WIRE -160 528 -160 432 WIRE -144 528 -160 528 WIRE -48 528 -64 528 WIRE -16 528 -48 528 WIRE 544 528 544 -512 WIRE 544 528 496 528 WIRE -48 544 -48 528 WIRE -160 624 -160 528 WIRE -144 624 -160 624 WIRE -16 624 -64 624 WIRE 544 624 544 528 WIRE 544 624 496 624 WIRE -160 720 -160 624 WIRE -144 720 -160 720 WIRE -16 720 -64 720 WIRE 1232 720 1232 144 WIRE 1232 720 496 720 WIRE -160 816 -160 720 WIRE -144 816 -160 816 WIRE -48 816 -64 816 WIRE -16 816 -48 816 WIRE 512 816 496 816 WIRE -48 832 -48 816 WIRE 32 896 32 880 WIRE 112 896 112 880 WIRE 192 912 192 880 WIRE 288 928 288 880 WIRE 368 928 368 880 WIRE 368 928 352 928 WIRE 384 928 368 928 WIRE 448 928 448 880 WIRE 32 976 32 960 WIRE 112 976 112 960 FLAG 192 912 0 FLAG 112 976 0 FLAG 32 976 0 FLAG 144 -608 0 FLAG 848 -512 0 FLAG 432 -608 0 FLAG 720 -112 0 FLAG 512 -48 0 FLAG 512 816 0 FLAG 1280 -128 0 FLAG 1392 -128 0 FLAG 1504 -128 0 FLAG 848 -640 IN FLAG 1504 -240 OUT FLAG 960 -112 0 FLAG -48 -432 0 FLAG -320 -80 0 FLAG -48 256 0 FLAG -48 352 0 FLAG -48 448 0 FLAG -48 544 0 FLAG -48 832 0 SYMBOL PowerProducts\\LTC3816 240 192 R0 SYMATTR InstName U1 SYMBOL cap 96 896 R0 SYMATTR InstName C1 SYMATTR Value 0.47n SYMBOL cap 16 896 R0 SYMATTR InstName C2 SYMATTR Value 22p SYMBOL cap 384 912 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 35 129 VTop 2 SYMATTR InstName C3 SYMATTR Value 22p SYMATTR SpiceLine Rpar=8.66K SYMBOL cap 288 912 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 56 18 VTop 2 SYMATTR InstName C4 SYMATTR Value 1000p SYMATTR SpiceLine Rser=59K Cpar=10p SYMBOL res 128 -608 R0 SYMATTR InstName R1 SYMATTR Value 470 SYMBOL voltage 848 -640 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 416 -592 R0 SYMATTR InstName C5 SYMATTR Value 4.7µ SYMBOL nmos 672 -512 R0 SYMATTR InstName Q1 SYMATTR Value RJK0305DPB SYMBOL schottky 560 -416 R0 SYMATTR InstName D1 SYMATTR Value CMDSH2-3 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 560 -320 R0 SYMATTR InstName C6 SYMATTR Value .1µ SYMBOL nmos 672 -224 R0 SYMATTR InstName Q2 SYMATTR Value RJK0301DPB SYMBOL ind 976 -224 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value .33µ SYMATTR SpiceLine Rser=1.3m SYMBOL res 608 64 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 511 SYMBOL cap 560 64 R0 SYMATTR InstName C7 SYMATTR Value 1p SYMBOL res 544 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 3.16K SYMBOL res 736 304 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R4 SYMATTR Value 3.32K SYMBOL cap 560 352 R0 SYMATTR InstName C8 SYMATTR Value 0.01p SYMBOL res 736 336 R0 SYMATTR InstName R5 SYMATTR Value 6.98K SYMBOL polcap 1264 -224 R0 WINDOW 3 37 35 Left 2 WINDOW 123 32 64 Left 2 SYMATTR Value 330µ SYMATTR Value2 X4 SYMATTR InstName C9 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine Rser=6m SYMBOL cap 1376 -224 R0 WINDOW 123 26 61 Left 2 WINDOW 3 36 33 Left 2 SYMATTR Value2 X20 SYMATTR Value 10µ SYMATTR InstName C10 SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R" SYMBOL nmos 912 -224 R0 SYMATTR InstName Q3 SYMATTR Value RJK0301DPB SYMBOL res 1232 -256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 1m SYMBOL voltage -320 -208 R0 WINDOW 123 24 146 Left 2 WINDOW 39 24 125 Left 2 SYMATTR Value 3.3 SYMATTR InstName V2 SYMBOL res -160 -224 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 1.91K SYMBOL res -160 -128 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R8 SYMATTR Value 1.91K SYMBOL res -160 -32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R9 SYMATTR Value 169 SYMBOL res -160 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R10 SYMATTR Value 1K SYMBOL res -160 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 1K SYMBOL res -160 448 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R12 SYMATTR Value 1K SYMBOL res -160 544 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R13 SYMATTR Value 1K SYMBOL res -160 640 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R14 SYMATTR Value 1K SYMBOL res -160 736 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R15 SYMATTR Value 1K SYMBOL res -160 832 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R16 SYMATTR Value 1K SYMBOL res 1488 -240 R0 SYMATTR InstName Rload SYMATTR Value 0.1 TEXT 1272 536 Left 2 !.tran 1.1m startup TEXT 296 -656 Bottom 2 ;LTC3816 - Single-Phase Wide VIN Range DC/DC Controller for Intel IMVP-6/IMVP-6.5 CPUs\nInput: 12V, Output: 0.9V @25A, Rdroop: 2.1mohm, Fswitch = 400kHz TEXT 608 760 Left 2 ;Notes:\n1. Small value are used for TRACK/SS capacitors to reduce simulation time.\n The typical value for actual applications will vary from 1nF to 100nF.\n2. More output capacitors may be needed to meet load step and \n output voltage requirements.\n3. This design example is for Intel Core Duo porcessor.\n4. If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n Component substitution and printed circuit board layout may significantly affect circuit performance or reliability\n Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts\n Copyright © 2010 Linear Technology Inc. All rights reserved.