Version 4 SHEET 1 3152 1468 WIRE 1824 864 1552 864 WIRE 1888 864 1824 864 WIRE 2016 864 1968 864 WIRE 2048 864 2016 864 WIRE 2144 864 2112 864 WIRE 2192 864 2144 864 WIRE 2304 864 2256 864 WIRE 2432 864 2304 864 WIRE 2544 864 2432 864 WIRE 1552 880 1552 864 WIRE 2432 880 2432 864 WIRE 2544 880 2544 864 WIRE 1824 912 1824 864 WIRE 2144 944 2144 864 WIRE 1552 976 1552 960 WIRE 2304 976 2304 864 WIRE 2432 976 2432 944 WIRE 2544 976 2544 944 WIRE 1680 992 1664 992 WIRE 2016 992 2016 864 WIRE 2016 992 1968 992 WIRE 2304 1072 2304 1056 WIRE 2304 1072 1968 1072 WIRE 2304 1088 2304 1072 WIRE 1504 1152 1488 1152 WIRE 1600 1152 1584 1152 WIRE 1680 1152 1664 1152 WIRE 2000 1152 1968 1152 WIRE 2032 1152 2000 1152 WIRE 2144 1152 2144 1024 WIRE 2144 1152 2112 1152 WIRE 2000 1168 2000 1152 WIRE 2144 1168 2144 1152 WIRE 2304 1184 2304 1168 WIRE 1744 1264 1744 1232 WIRE 1904 1264 1904 1232 WIRE 2000 1264 2000 1232 WIRE 2144 1264 2144 1248 FLAG 1552 976 0 FLAG 1744 1264 0 FLAG 1488 1152 0 FLAG 2544 976 0 FLAG 2432 976 0 FLAG 2304 1184 0 FLAG 1904 1264 0 FLAG 2144 1264 0 FLAG 2000 1264 0 FLAG 2544 864 OUT FLAG 1552 864 IN SYMBOL VOLTAGE 1552 864 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL CAP 1664 1136 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL RES 1600 1136 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL RES 2288 1072 R0 SYMATTR InstName R2 SYMATTR Value 6.19K SYMBOL RES 2288 960 R0 SYMATTR InstName R1 SYMATTR Value 18.7K SYMBOL schottky 2192 880 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS130L SYMBOL ind2 2128 1040 M180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L2 SYMATTR Value 33µ SYMBOL ind2 1872 880 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 33µ SYMBOL POWERPRODUCTS\\LT1512 1824 1072 R0 SYMATTR InstName U1 SYMBOL RES 2128 1152 R0 SYMATTR InstName R4 SYMATTR Value .2 SYMBOL res 2128 1136 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 24 SYMBOL CAP 1984 1168 R0 SYMATTR InstName C1 SYMATTR Value .22µ SYMBOL cap 2112 848 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 2.2µ SYMBOL cap 2416 880 R0 SYMATTR InstName C6 SYMATTR Value 100µ SYMATTR SpiceLine Rser=.1 SYMBOL cap 2528 880 R0 SYMATTR InstName C2 SYMATTR Value 1m TEXT 2080 816 Bottom 2 !K1 L1 L2 1 TEXT 2448 1176 Left 2 !.tran 5m TEXT 2448 1208 Left 2 !.ic V(out) = 3.9 TEXT 2080 784 Bottom 2 ;LT1512 - SEPIC Constant-Current/Constant-Voltage Battery Charger\nSEPIC Charger with 0.5A Output Current\nInput: 5V to 25V Output: 5.2V @ .5A TEXT 1424 1272 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 © 2012 Linear Technology Inc. All rights reserved.