Version 4 SHEET 1 3836 1412 WIRE 2752 864 2576 864 WIRE 2816 864 2752 864 WIRE 2944 864 2880 864 WIRE 2752 896 2752 864 WIRE 2576 912 2576 864 WIRE 2416 976 2336 976 WIRE 2448 976 2416 976 WIRE 2752 976 2752 960 WIRE 2752 976 2704 976 WIRE 2816 976 2752 976 WIRE 2944 976 2944 864 WIRE 2944 976 2896 976 WIRE 3056 976 2944 976 WIRE 3136 976 3056 976 WIRE 3216 976 3136 976 WIRE 2336 992 2336 976 WIRE 2752 992 2752 976 WIRE 2944 992 2944 976 WIRE 3136 992 3136 976 WIRE 3216 992 3216 976 WIRE 3056 1008 3056 976 WIRE 2752 1072 2752 1056 WIRE 2336 1088 2336 1072 WIRE 3136 1088 3136 1056 WIRE 3216 1088 3216 1072 WIRE 2416 1104 2416 976 WIRE 2448 1104 2416 1104 WIRE 2944 1104 2944 1072 WIRE 2944 1104 2704 1104 WIRE 3056 1104 3056 1072 WIRE 3056 1104 2944 1104 WIRE 2944 1120 2944 1104 WIRE 2576 1184 2576 1168 WIRE 2944 1216 2944 1200 FLAG 2336 1088 0 FLAG 2576 1184 0 FLAG 2944 1216 0 FLAG 2752 1072 0 FLAG 3136 1088 0 FLAG 3216 1088 0 FLAG 3216 976 OUT FLAG 2336 976 IN SYMBOL VOLTAGE 2336 976 R0 WINDOW 0 27 22 Left 2 WINDOW 3 29 98 Left 2 SYMATTR InstName V1 SYMATTR Value 6 SYMBOL ind 2800 992 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 20µ SYMBOL RES 2928 976 R0 SYMATTR InstName R1 SYMATTR Value 32.4K SYMBOL res 2928 1216 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL schottky 2736 1056 M180 WINDOW 0 41 52 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value MBRS340 SYMBOL cap 3120 992 R0 SYMATTR InstName C2 SYMATTR Value 10µ SYMBOL res 3200 976 R0 SYMATTR InstName Rload SYMATTR Value 3 SYMBOL cap 3040 1008 R0 SYMATTR InstName C3 SYMATTR Value 22p SYMBOL PowerProducts\\LT3493-3 2576 1040 R0 SYMATTR InstName U1 SYMBOL cap 2736 896 R0 WINDOW 3 26 53 Left 2 SYMATTR Value .1µ SYMATTR InstName C1 SYMBOL schottky 2880 848 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D3 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode TEXT 3064 1192 Left 2 !.tran 250u startup