Version 4 SHEET 1 3964 776 WIRE 1136 -1520 1024 -1520 WIRE 1232 -1520 1136 -1520 WIRE 1376 -1520 1232 -1520 WIRE 2704 -1520 2416 -1520 WIRE 2800 -1520 2704 -1520 WIRE 2912 -1520 2800 -1520 WIRE 3072 -1520 2912 -1520 WIRE 1024 -1504 1024 -1520 WIRE 1136 -1504 1136 -1520 WIRE 1376 -1504 1376 -1520 WIRE 2416 -1504 2416 -1520 WIRE 2704 -1504 2704 -1520 WIRE 3072 -1504 3072 -1520 WIRE 1328 -1424 1264 -1424 WIRE 2656 -1424 2464 -1424 WIRE 1136 -1408 1136 -1440 WIRE 2704 -1408 2704 -1440 WIRE 3072 -1408 3072 -1424 WIRE 1376 -1392 1376 -1408 WIRE 1568 -1392 1376 -1392 WIRE 1664 -1392 1568 -1392 WIRE 1776 -1392 1664 -1392 WIRE 1904 -1392 1776 -1392 WIRE 1920 -1392 1904 -1392 WIRE 2032 -1392 2000 -1392 WIRE 2048 -1392 2032 -1392 WIRE 2160 -1392 2128 -1392 WIRE 2272 -1392 2160 -1392 WIRE 2368 -1392 2272 -1392 WIRE 2416 -1392 2416 -1408 WIRE 2416 -1392 2368 -1392 WIRE 1024 -1376 1024 -1424 WIRE 1376 -1376 1376 -1392 WIRE 2416 -1376 2416 -1392 WIRE 1776 -1312 1776 -1392 WIRE 1904 -1312 1904 -1392 WIRE 2032 -1312 2032 -1392 WIRE 2160 -1312 2160 -1392 WIRE 1328 -1296 1296 -1296 WIRE 2496 -1296 2464 -1296 WIRE 1376 -1264 1376 -1280 WIRE 2416 -1264 2416 -1280 WIRE 1568 -1232 1568 -1392 WIRE 1584 -1232 1568 -1232 WIRE 1664 -1232 1648 -1232 WIRE 2288 -1232 2272 -1232 WIRE 2368 -1232 2368 -1392 WIRE 2368 -1232 2352 -1232 WIRE 1296 -1136 1296 -1296 WIRE 1568 -1136 1296 -1136 WIRE 1664 -1136 1568 -1136 WIRE 2368 -1136 2272 -1136 WIRE 2496 -1136 2496 -1296 WIRE 2496 -1136 2368 -1136 WIRE 1264 -1056 1264 -1424 WIRE 1568 -1056 1264 -1056 WIRE 1664 -1056 1568 -1056 WIRE 2368 -1056 2272 -1056 WIRE 2656 -1056 2656 -1424 WIRE 2656 -1056 2368 -1056 WIRE 1232 -976 1232 -1520 WIRE 1664 -976 1232 -976 WIRE 2800 -976 2800 -1520 WIRE 2800 -976 2272 -976 WIRE 1232 -960 1232 -976 WIRE 1664 -880 1232 -880 WIRE 1232 -864 1232 -880 WIRE 1376 -784 1360 -784 WIRE 1456 -784 1440 -784 WIRE 1600 -784 1456 -784 WIRE 1664 -784 1600 -784 WIRE 2912 -784 2912 -1520 WIRE 1232 -768 1232 -784 WIRE 1456 -688 1456 -784 WIRE 1472 -688 1456 -688 WIRE 1600 -688 1552 -688 WIRE 1664 -688 1600 -688 WIRE 2608 -688 2272 -688 WIRE 2912 -688 2912 -704 WIRE 2912 -688 2608 -688 WIRE 2912 -672 2912 -688 WIRE 1456 -592 1440 -592 WIRE 1664 -592 1520 -592 WIRE 2912 -576 2912 -592 WIRE 1664 -496 1312 -496 WIRE 1312 -448 1312 -496 WIRE 1664 -320 1648 -320 WIRE 2288 -320 2272 -320 WIRE 1312 -288 1312 -368 WIRE 1776 -192 1776 -224 WIRE 1968 -192 1968 -224 WIRE 1776 -160 1776 -192 WIRE 1968 -160 1968 -192 WIRE 2160 -160 2160 -224 WIRE 1776 -64 1776 -96 WIRE 1968 -64 1968 -80 WIRE 2160 -64 2160 -80 WIRE 1968 16 1968 0 FLAG 2288 -320 0 FLAG 1776 -64 0 FLAG 2160 -64 0 FLAG 1968 16 0 FLAG 1024 -1376 0 FLAG 1232 -768 0 FLAG 3072 -1408 0 FLAG 1024 -1520 IN FLAG 1376 -1264 0 FLAG 2416 -1264 0 FLAG 2912 -576 0 FLAG 1360 -784 0 FLAG 1440 -592 0 FLAG 3072 -1520 OUT FLAG 1648 -320 0 FLAG 1136 -1408 0 FLAG 2704 -1408 0 FLAG 1968 -192 VC FLAG 2608 -688 FB FLAG 1568 -1136 BG1 FLAG 1568 -1056 TG1 FLAG 2368 -1136 BG2 FLAG 2368 -1056 TG2 FLAG 1664 -1392 SW1 FLAG 2272 -1392 SW2 FLAG 1600 -688 _PGOOD FLAG 1600 -784 INTVcc FLAG 1776 -192 SS FLAG 1312 -288 0 SYMBOL cap 1760 -160 R0 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL cap 1952 -64 R0 WINDOW 39 24 77 Left 2 SYMATTR Value 2.2n SYMATTR InstName C2 SYMBOL voltage 1024 -1520 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PWL(0 0 100u 48 6m 48); 6.1m 11 7m 11 7.1m 12 8m 12 8.1m 13 9m 13 9.1m 24 10m 24) SYMBOL res 1904 -1376 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 5m SYMBOL cap 1648 -1248 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value .1µ SYMBOL nmos 1328 -1504 R0 WINDOW 0 59 25 Left 2 WINDOW 3 60 50 Left 2 WINDOW 123 59 72 Left 2 SYMATTR InstName Q1 SYMATTR Value BSC014N04LSI SYMATTR Value2 m=2 SYMBOL nmos 1328 -1376 R0 WINDOW 0 58 29 Left 2 WINDOW 3 59 60 Left 2 SYMATTR InstName Q2 SYMATTR Value BSC010N04LSI SYMBOL ind 2032 -1376 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 6.8µ SYMATTR SpiceLine Rser=3m SYMBOL nmos 2464 -1504 M0 WINDOW 0 -2 26 Right 2 WINDOW 3 -2 56 Right 2 SYMATTR InstName Q3 SYMATTR Value BSC009NE2LS5I SYMBOL nmos 2464 -1376 M0 WINDOW 0 -1 22 Right 2 WINDOW 3 -2 46 Right 2 WINDOW 123 -4 65 Right 2 SYMATTR InstName Q4 SYMATTR Value BSC015NE2LS5I SYMATTR Value2 m=2 SYMBOL cap 2352 -1248 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL res 2144 -176 R0 SYMATTR InstName R3 SYMATTR Value 100k SYMBOL res 2896 -800 R0 SYMATTR InstName R4 SYMATTR Value 110K SYMBOL cap 1440 -800 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 4.7µ SYMBOL cap 1520 -608 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .47µ SYMBOL res 2896 -688 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL res 1568 -704 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 100K SYMBOL res 1216 -880 R0 SYMATTR InstName R7 SYMATTR Value 165k SYMBOL res 1216 -976 R0 SYMATTR InstName R8 SYMATTR Value 383K SYMBOL res 1952 -176 R0 SYMATTR InstName R9 SYMATTR Value 30K SYMBOL cap 1120 -1504 R0 WINDOW 3 37 33 Left 2 WINDOW 123 27 54 Left 2 SYMATTR Value 180µ SYMATTR Value2 x2 SYMATTR InstName C8 SYMBOL res 3056 -1520 R0 SYMATTR InstName Rload SYMATTR Value 2.4 SYMBOL cap 2688 -1504 R0 WINDOW 3 37 33 Left 2 WINDOW 123 32 56 Left 2 SYMATTR Value 220µ SYMATTR Value2 x2 SYMATTR InstName C9 SYMATTR SpiceLine Rser=15m SYMBOL LT8253 1968 -768 R0 SYMATTR InstName U1 SYMBOL voltage 1312 -464 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PWL(0 0 1m 0 1.001m 5 2m 5) TEXT 2624 -416 Left 2 !.tran 100m startup TEXT 1952 -1520 Bottom 2 ;LT8253 - 40V Synchronous 4-Switch Buck-Boost Controller with Spread Sprectrum\nHigh Efficiency 60W Buck-Boost Regulator\nInput: 9V to 36V Output: 12V @ 3A, Fsw = 400kHz