Version 4 SHEET 1 3180 3296 WIRE -384 1216 -416 1216 WIRE 384 1216 -384 1216 WIRE -176 1280 -640 1280 WIRE -144 1280 -176 1280 WIRE -16 1280 -144 1280 WIRE 0 1280 -16 1280 WIRE 112 1280 80 1280 WIRE 128 1280 112 1280 WIRE 240 1280 208 1280 WIRE 272 1280 240 1280 WIRE 544 1280 272 1280 WIRE -384 1312 -384 1216 WIRE 384 1312 384 1216 WIRE -144 1360 -144 1280 WIRE -16 1360 -16 1280 WIRE 112 1360 112 1280 WIRE 240 1360 240 1280 WIRE -1008 1440 -1104 1440 WIRE -896 1440 -1008 1440 WIRE -800 1440 -896 1440 WIRE -784 1440 -800 1440 WIRE -640 1440 -640 1280 WIRE -640 1440 -688 1440 WIRE -560 1440 -640 1440 WIRE -384 1440 -384 1376 WIRE -384 1440 -496 1440 WIRE -256 1440 -384 1440 WIRE 384 1440 384 1376 WIRE 384 1440 352 1440 WIRE 416 1440 384 1440 WIRE 544 1440 544 1280 WIRE 544 1440 480 1440 WIRE 704 1440 544 1440 WIRE 816 1440 800 1440 WIRE 864 1440 816 1440 WIRE 1104 1440 864 1440 WIRE 1152 1440 1104 1440 WIRE 1248 1440 1152 1440 WIRE -1104 1456 -1104 1440 WIRE -1008 1456 -1008 1440 WIRE -896 1456 -896 1440 WIRE -640 1456 -640 1440 WIRE 544 1456 544 1440 WIRE 864 1456 864 1440 WIRE 1152 1456 1152 1440 WIRE 1248 1456 1248 1440 WIRE -320 1536 -592 1536 WIRE -256 1536 -320 1536 WIRE 416 1536 352 1536 WIRE 496 1536 416 1536 WIRE -1104 1552 -1104 1536 WIRE -1008 1552 -1008 1520 WIRE -896 1552 -896 1520 WIRE 864 1552 864 1520 WIRE 1152 1552 1152 1520 WIRE 1248 1552 1248 1536 WIRE -640 1568 -640 1552 WIRE 544 1568 544 1552 WIRE -704 1616 -704 1488 WIRE -320 1616 -704 1616 WIRE -256 1616 -320 1616 WIRE 416 1616 352 1616 WIRE 720 1616 720 1488 WIRE 720 1616 416 1616 WIRE -880 1696 -896 1696 WIRE -800 1696 -800 1440 WIRE -800 1696 -816 1696 WIRE -256 1696 -800 1696 WIRE 816 1696 816 1440 WIRE 816 1696 352 1696 WIRE 832 1696 816 1696 WIRE -800 1792 -800 1776 WIRE -256 1792 -800 1792 WIRE -800 1808 -800 1792 WIRE -528 1888 -544 1888 WIRE -416 1888 -416 1216 WIRE -416 1888 -464 1888 WIRE -320 1888 -416 1888 WIRE -256 1888 -320 1888 WIRE 1104 1888 1104 1440 WIRE -800 1904 -800 1888 WIRE -416 1984 -416 1888 WIRE -368 1984 -416 1984 WIRE -256 1984 -288 1984 WIRE 1104 1984 1104 1968 WIRE 1104 1984 352 1984 WIRE 1104 2000 1104 1984 WIRE -464 2080 -480 2080 WIRE -368 2080 -400 2080 WIRE -320 2080 -368 2080 WIRE -256 2080 -320 2080 WIRE 1104 2096 1104 2080 WIRE -368 2176 -368 2080 WIRE -256 2176 -368 2176 WIRE -256 2352 -272 2352 WIRE 384 2352 352 2352 WIRE 48 2464 48 2448 WIRE 240 2464 240 2448 WIRE -144 2480 -144 2448 WIRE -144 2560 -144 2544 WIRE 48 2560 48 2544 WIRE 240 2560 240 2544 WIRE 48 2640 48 2624 FLAG -1008 1552 0 FLAG 48 2640 0 FLAG 1152 1552 0 FLAG 1248 1440 OUT FLAG 1248 1552 0 FLAG 240 2560 0 FLAG 544 1568 0 FLAG -1104 1552 0 FLAG -1104 1440 IN FLAG -800 1904 0 FLAG 384 2352 0 FLAG -896 1552 0 FLAG -544 1888 0 FLAG -480 2080 0 FLAG -272 2352 0 FLAG -640 1568 0 FLAG -144 2560 0 FLAG 1104 2096 0 FLAG 896 1696 0 FLAG -896 1696 0 FLAG 864 1552 0 FLAG -320 1888 intvcc FLAG -320 2080 vref FLAG -176 1280 sw1 FLAG 272 1280 sw2 FLAG -320 1536 bg1 FLAG -320 1616 tg1 FLAG 416 1536 bg2 FLAG 416 1616 tg2 SYMBOL ind 112 1296 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1µ SYMATTR SpiceLine Rser=13m SYMBOL res 1088 1984 R0 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL res 1088 1872 R0 SYMATTR InstName R2 SYMATTR Value 110K SYMBOL cap 32 2560 R0 WINDOW 39 24 77 Left 2 SYMATTR InstName C1 SYMATTR Value 2200p SYMBOL voltage -1104 1440 M0 WINDOW 123 24 138 Left 2 WINDOW 39 24 117 Left 2 SYMATTR InstName V1 SYMATTR Value PWL(0 0 100u 8 2m 8 2.1m 11 3m 11 3.1m 12 4m 12 4.1m 13 5m 13 5.1m 24 10m 24) SYMBOL cap -1024 1456 R0 WINDOW 123 24 57 Left 2 WINDOW 3 42 35 Left 2 SYMATTR Value2 x1 SYMATTR Value 22µ SYMATTR InstName C2 SYMBOL cap 1136 1456 R0 WINDOW 123 24 77 Left 2 SYMATTR InstName C3 SYMATTR Value 22µ SYMATTR SpiceLine Rser=5m SYMBOL res 224 2448 R0 SYMATTR InstName R3 SYMATTR Value 59K SYMBOL res 32 2448 R0 SYMATTR InstName R4 SYMATTR Value 10K SYMBOL nmos 800 1488 M270 WINDOW 0 106 22 VRight 2 WINDOW 3 75 -39 VRight 2 SYMATTR InstName Q1 SYMATTR Value BSC032NE2LS SYMBOL cap 416 1456 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL nmos 496 1456 R0 WINDOW 0 57 31 Left 2 WINDOW 3 60 64 Left 2 SYMATTR InstName Q2 SYMATTR Value BSC032NE2LS SYMBOL res -816 1680 R0 SYMATTR InstName R5 SYMATTR Value 383K SYMBOL res -816 1792 R0 SYMATTR InstName R6 SYMATTR Value 165K SYMBOL cap -912 1456 R0 WINDOW 123 24 53 Left 2 WINDOW 3 39 31 Left 2 SYMATTR Value2 x2 SYMATTR Value 4.7µ SYMATTR InstName C5 SYMBOL cap -464 1872 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 4.7µ SYMBOL cap -400 2064 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value .47µ SYMBOL res -272 1968 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 100K SYMBOL cap -560 1456 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C8 SYMATTR Value .1µ SYMBOL nmos -784 1488 R270 WINDOW 0 107 44 VBottom 2 WINDOW 3 52 48 VTop 2 SYMATTR InstName Q3 SYMATTR Value BSZ065N06LS5 SYMBOL nmos -592 1456 M0 WINDOW 0 4 28 Right 2 WINDOW 3 3 61 Right 2 SYMATTR InstName Q4 SYMATTR Value BSZ065N06LS5 SYMBOL cap -160 2480 R0 SYMATTR InstName C9 SYMATTR Value 10n SYMBOL res 96 1264 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 5m SYMBOL res 1232 1440 R0 SYMATTR InstName Rload SYMATTR Value 3 SYMBOL cap 832 1712 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C11 SYMATTR Value 1µ SYMBOL cap -816 1680 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C12 SYMATTR Value .47µ SYMBOL schottky 368 1312 R0 SYMATTR InstName D1 SYMATTR Value BAT46WJ SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky -400 1312 R0 SYMATTR InstName D2 SYMATTR Value BAT46WJ SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 848 1456 R0 WINDOW 3 39 31 Left 2 WINDOW 123 26 52 Left 2 SYMATTR Value 22µ SYMATTR Value2 x2 SYMATTR InstName C13 SYMATTR SpiceLine Rser=5m SYMBOL LT8253A 48 1904 R0 SYMATTR InstName U1 TEXT 608 2176 Left 2 !.tran 10m startup TEXT 32 1200 Bottom 2 ;LT8253A - 40V 2MHz Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum\nHigh Efficiency 48W 2MHz Buck-Boost Voltage Regulator\nInput: 4V to 24V, 60V Trans Output: 12V @ 4A, Fsw = 2MHz TEXT -496 2648 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 ADI parts.\n Copyright © 2018 Analog Devices. All rights reserved.