Version 4 SHEET 1 2524 1384 WIRE 256 -16 160 -16 WIRE 1024 -16 256 -16 WIRE 1104 -16 1024 -16 WIRE 160 0 160 -16 WIRE 1104 0 1104 -16 WIRE 256 32 256 -16 WIRE 288 32 256 32 WIRE 400 32 368 32 WIRE 576 32 400 32 WIRE 400 64 400 32 WIRE 672 64 464 64 WIRE 896 64 672 64 WIRE 928 64 896 64 WIRE 160 96 160 80 WIRE 576 96 576 32 WIRE 672 96 672 64 WIRE 1104 112 1104 64 WIRE 400 144 400 128 WIRE 496 160 480 160 WIRE 1312 160 848 160 WIRE 896 176 896 64 WIRE 496 256 480 256 WIRE 896 256 896 240 WIRE 896 256 848 256 WIRE 896 272 896 256 WIRE 1024 272 1024 -16 WIRE 464 352 464 64 WIRE 496 352 464 352 WIRE 976 352 848 352 WIRE 464 448 464 352 WIRE 496 448 464 448 WIRE 896 448 896 336 WIRE 896 448 848 448 WIRE 1024 448 1024 368 WIRE 1024 448 896 448 WIRE 1072 448 1024 448 WIRE 1184 448 1152 448 WIRE 1200 448 1184 448 WIRE 1296 448 1280 448 WIRE 1312 448 1312 160 WIRE 1312 448 1296 448 WIRE 1376 448 1312 448 WIRE 1472 448 1376 448 WIRE 1584 448 1472 448 WIRE 1024 464 1024 448 WIRE 1376 480 1376 448 WIRE 1472 480 1472 448 WIRE 1584 480 1584 448 WIRE 400 544 384 544 WIRE 496 544 480 544 WIRE 976 544 848 544 WIRE 1024 576 1024 560 WIRE 1376 592 1376 544 WIRE 1376 592 1328 592 WIRE 1584 592 1584 560 WIRE 1376 608 1376 592 WIRE 1472 608 1472 544 WIRE 192 640 144 640 WIRE 304 640 272 640 WIRE 496 640 304 640 WIRE 896 640 848 640 WIRE 960 640 896 640 WIRE 1184 640 1184 448 WIRE 1184 640 1040 640 WIRE 144 656 144 640 WIRE 896 656 896 640 WIRE 304 672 304 640 WIRE 416 736 400 736 WIRE 496 736 480 736 WIRE 896 736 896 720 WIRE 896 736 848 736 WIRE 960 736 896 736 WIRE 1296 736 1296 448 WIRE 1296 736 1040 736 WIRE 144 752 144 720 WIRE 304 752 304 736 WIRE 496 832 480 832 WIRE 864 832 848 832 WIRE 608 928 608 896 WIRE 816 928 608 928 WIRE 896 928 816 928 WIRE 1312 928 1312 448 WIRE 1312 928 976 928 WIRE 816 944 816 928 WIRE 1328 944 1328 592 WIRE 1328 944 1040 944 WIRE 736 1040 736 896 WIRE 816 1040 816 1024 WIRE 816 1040 736 1040 WIRE 1040 1040 1040 944 WIRE 1040 1040 816 1040 FLAG 1024 576 0 FLAG 160 96 0 FLAG 160 -16 IN FLAG 384 544 0 FLAG 480 832 0 FLAG 864 832 0 FLAG 1376 608 0 FLAG 1472 608 0 FLAG 400 736 0 FLAG 304 752 0 FLAG 1584 592 0 FLAG 1104 112 0 FLAG 400 144 0 FLAG 1584 448 OUT FLAG 928 128 0 FLAG 144 752 0 SYMBOL NMOS 976 464 R0 WINDOW 3 56 93 Left 2 SYMATTR Value RJK0301DPB SYMATTR InstName Q2 SYMBOL schottky 880 176 R0 SYMATTR InstName D1 SYMATTR Value CMDSH2-3 SYMBOL nmos 976 272 R0 SYMATTR InstName Q1 SYMATTR Value RJK0305DPB SYMBOL ind 1056 464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value .44µ SYMATTR SpiceLine Rser=0.216m SYMBOL VOLTAGE 160 -16 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 880 272 R0 WINDOW 0 28 17 Left 2 WINDOW 3 26 48 Left 2 SYMATTR InstName C5 SYMATTR Value .22µ SYMBOL PowerProducts\\LTC3833 672 496 R0 SYMATTR InstName U1 SYMBOL res 496 528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 137K SYMBOL cap 880 656 R0 SYMATTR InstName C1 SYMATTR Value 1n SYMBOL res 1056 624 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 10 SYMBOL res 1056 720 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10 SYMBOL polcap 1360 480 R0 WINDOW 40 24 85 Left 2 SYMATTR SpiceLine2 m=2 SYMATTR InstName Cout1 SYMATTR Value 330µ SYMATTR SpiceLine Rser=9m SYMBOL cap 1456 480 R0 WINDOW 40 24 92 Left 2 SYMATTR SpiceLine2 m=2 SYMATTR InstName Cout2 SYMATTR Value 100µ SYMATTR SpiceLine Rser=2m SYMBOL res 800 928 R0 SYMATTR InstName R7 SYMATTR Value 10.0K SYMBOL res 992 912 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 15.0K SYMBOL cap 480 720 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 1n SYMBOL cap 288 672 R0 SYMATTR InstName C10 SYMATTR Value 100p SYMBOL res 288 624 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 16.5K SYMBOL cap 128 656 R0 SYMATTR InstName C2 SYMATTR Value 470p SYMBOL cap 1088 0 R0 WINDOW 40 24 92 Left 2 SYMATTR SpiceLine2 m=3 SYMATTR InstName C3 SYMATTR Value 22µ SYMATTR SpiceLine Rser=4m SYMBOL res 1184 464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName Rsense SYMATTR Value 2m SYMBOL cap 384 64 R0 SYMATTR InstName C6 SYMATTR Value 0.1µ SYMBOL res 384 16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 2.2 SYMBOL res 1568 464 R0 SYMATTR InstName Rload SYMATTR Value 75m SYMBOL cap 912 64 R0 WINDOW 0 42 27 Left 2 WINDOW 3 41 53 Left 2 SYMATTR InstName C8 SYMATTR Value 4.7µ TEXT 1344 984 Left 2 !.tran 1m startup TEXT 744 -24 Bottom 2 ;LTC3833 - Fast Accurate Step-Down DC/DC Controller with Differential Output Sensing\nInput: 4.5V - 14V Output: 1.5V @ 20A, Fswitch = 300kHz TEXT 1536 648 Left 2 ;1.5V @ 20A TEXT 248 1040 Left 2 ;Note:\n 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 © 2011 Linear Technology Inc. All rights reserved.