Version 4
SHEET 1 2040 680
WIRE 832 -176 752 -176
WIRE 880 -176 832 -176
WIRE 992 -176 944 -176
WIRE 1056 -176 992 -176
WIRE 1200 -176 1056 -176
WIRE 1200 -96 1200 -176
WIRE 512 -64 256 -64
WIRE 688 -64 688 -176
WIRE 688 -64 672 -64
WIRE 720 -64 688 -64
WIRE 832 -64 832 -112
WIRE 832 -64 784 -64
WIRE 992 -64 992 -112
WIRE 992 -64 832 -64
WIRE 224 0 224 -16
WIRE 224 0 0 0
WIRE 256 0 256 -64
WIRE 256 0 224 0
WIRE 512 16 400 16
WIRE 224 48 224 0
WIRE 400 80 400 16
WIRE 544 80 400 80
WIRE 672 80 672 16
WIRE 672 80 608 80
WIRE 992 80 992 0
WIRE 992 80 672 80
WIRE 0 112 0 0
WIRE 400 112 400 80
WIRE 400 112 368 112
WIRE -192 192 -208 192
WIRE -160 192 -192 192
WIRE -80 192 -96 192
WIRE 32 192 0 192
WIRE 80 192 32 192
WIRE 640 192 368 192
WIRE 768 192 640 192
WIRE 880 192 768 192
WIRE 1056 192 1056 -176
WIRE 1056 192 960 192
WIRE 1104 192 1056 192
WIRE -192 272 -192 192
WIRE -32 272 -192 272
WIRE 32 272 32 192
WIRE 768 288 768 272
WIRE 1200 288 1200 -16
WIRE 1200 288 768 288
WIRE 768 304 768 288
WIRE 1200 304 1200 288
WIRE 640 384 640 256
WIRE 640 384 624 384
WIRE 768 384 640 384
WIRE 976 384 768 384
FLAG -112 0 3v7
FLAG -112 80 0
FLAG 224 336 0
FLAG 224 -16 3v7
FLAG -208 192 0
FLAG 672 80 0
FLAG 976 384 0
SYMBOL voltage -112 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 3.7
SYMBOL res 96 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 33k
SYMBOL res 16 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL cap -96 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .01µ
SYMBOL ind2 496 -80 R0
SYMATTR InstName L1
SYMATTR Value 24µ
SYMATTR Type ind
SYMBOL ind2 688 -80 M0
SYMATTR InstName L2
SYMATTR Value 3.5m
SYMATTR Type ind
SYMBOL schottky 608 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value MBRS140
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 976 -64 R0
SYMATTR InstName C2
SYMATTR Value .01µ
SYMBOL cap 976 -176 R0
SYMATTR InstName C3
SYMATTR Value .01µ
SYMBOL cap 752 -192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .01µ
SYMBOL res 976 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1.1Meg
SYMBOL res 752 176 R0
SYMATTR InstName R5
SYMATTR Value 7.5k
SYMBOL PowerProducts\\LT1308A 224 192 R0
SYMATTR InstName U2
SYMBOL res 752 288 R0
SYMATTR InstName R6
SYMATTR Value 150
SYMBOL diode 720 -48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value RF101L4S
SYMBOL diode 880 -160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMATTR Value RF101L4S
SYMBOL diode 848 -112 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value RF101L4S
SYMBOL cap 624 192 R0
SYMATTR InstName C5
SYMATTR Value .01µ
SYMBOL res 1184 -112 R0
SYMATTR InstName R7
SYMATTR Value 83k
TEXT 520 -96 Left 2 !K1 L1 L2 1
TEXT 424 296 Left 2 !.tran .1 startup
TEXT 416 320 Left 2 !;tran 1