Version 4
SHEET 1 880 900
WIRE -160 128 -192 128
WIRE -1232 144 -1648 144
WIRE -1472 176 -1504 176
WIRE -1232 176 -1248 176
WIRE -160 176 -160 128
WIRE -160 176 -368 176
WIRE -1504 208 -1504 176
WIRE -1504 208 -1600 208
WIRE -1136 208 -1504 208
WIRE -880 240 -1088 240
WIRE -848 240 -880 240
WIRE -160 272 -160 176
WIRE -1136 288 -1136 208
WIRE -1088 288 -1088 240
WIRE -432 288 -496 288
WIRE -368 288 -368 256
WIRE -192 288 -368 288
WIRE -1648 304 -1648 144
WIRE -1600 304 -1600 288
WIRE -1600 304 -1648 304
WIRE -1504 304 -1504 208
WIRE -32 304 -128 304
WIRE 0 304 -32 304
WIRE -1600 320 -1600 304
WIRE -880 320 -880 240
WIRE -336 320 -496 320
WIRE -256 320 -272 320
WIRE -192 320 -256 320
WIRE -160 368 -160 336
WIRE -1504 400 -1504 384
WIRE -1504 400 -1600 400
WIRE -1344 400 -1504 400
WIRE -1248 400 -1248 176
WIRE -1248 400 -1264 400
WIRE -1232 400 -1248 400
WIRE -1136 400 -1136 368
WIRE -1136 400 -1152 400
WIRE -1088 400 -1088 368
WIRE -1136 432 -1136 400
WIRE -1504 448 -1504 400
WIRE -256 448 -256 320
WIRE -224 448 -256 448
WIRE -128 448 -160 448
WIRE -32 448 -32 304
WIRE -32 448 -64 448
WIRE -1088 480 -1088 464
WIRE -880 480 -880 400
WIRE -880 480 -1088 480
WIRE -368 496 -368 288
WIRE -256 496 -256 448
WIRE -1296 512 -1328 512
WIRE -1184 512 -1216 512
WIRE -992 528 -1136 528
WIRE -1136 544 -1136 528
WIRE -736 560 -768 560
WIRE -544 560 -736 560
WIRE -736 576 -736 560
WIRE -256 576 -368 576
WIRE -256 608 -256 576
WIRE -1136 656 -1136 624
WIRE -880 656 -880 480
WIRE -880 656 -1136 656
WIRE -1136 688 -1136 656
WIRE -544 688 -544 560
WIRE -736 704 -736 656
WIRE -576 704 -736 704
WIRE -416 720 -512 720
WIRE -1216 736 -1360 736
WIRE -688 736 -768 736
WIRE -576 736 -608 736
WIRE -1360 768 -1360 736
WIRE -736 768 -736 704
WIRE -544 848 -544 752
WIRE -544 848 -736 848
WIRE -1360 880 -1360 848
WIRE -544 880 -544 848
FLAG -1136 688 0
FLAG -1504 448 0
FLAG -1232 144 Vref
IOPIN -1232 144 Out
FLAG -1472 176 Vcc
IOPIN -1472 176 Out
FLAG -848 240 Vbat
IOPIN -848 240 Out
FLAG -1232 176 Vfb
IOPIN -1232 176 Out
FLAG -192 128 Vcc
IOPIN -192 128 Out
FLAG -160 368 0
FLAG -256 608 0
FLAG -496 288 RESET
IOPIN -496 288 In
FLAG -496 320 SET
IOPIN -496 320 In
FLAG -1360 880 0
FLAG -1216 736 SET
IOPIN -1216 736 In
FLAG -992 528 Csense
IOPIN -992 528 Out
FLAG -1328 512 GATE
IOPIN -1328 512 Out
FLAG -544 880 0
FLAG -768 560 Vcc
IOPIN -768 560 Out
FLAG -416 720 RESET
IOPIN -416 720 In
FLAG -768 736 Csense
IOPIN -768 736 Out
FLAG 0 304 GATE
IOPIN 0 304 Out
SYMBOL ind2 -1120 384 R180
WINDOW 0 36 80 Left 2
WINDOW 3 38 56 Left 2
SYMATTR InstName L1
SYMATTR Value 8µ
SYMBOL ind2 -1104 272 R0
SYMATTR InstName L2
SYMATTR Value 8µ
SYMBOL schottky -1072 464 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -134 38 Left 2
SYMATTR InstName D5
SYMATTR Value RBR1L30A
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -1184 432 R0
SYMATTR InstName M1
SYMATTR Value Si7336ADP
SYMBOL voltage -1504 288 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL voltage -1360 752 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -256 109 Left 2
SYMATTR Value PULSE(0 7.5 10u 100n 100n 2u 10u 10)
SYMATTR InstName V3
SYMBOL voltage -880 304 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 14
SYMBOL res -1248 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res -1616 304 R0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL res -1616 192 R0
SYMATTR InstName R3
SYMATTR Value 5K
SYMBOL res -1136 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 5K
SYMBOL res -1152 528 R0
SYMATTR InstName R11
SYMATTR Value 0.02
SYMBOL diode -160 432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -64 432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res -272 480 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL diode -432 304 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode -336 336 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res -384 480 R0
SYMATTR InstName R6
SYMATTR Value 10K
SYMBOL res -384 160 R0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL Opamps\\LT6203 -544 720 R0
SYMATTR InstName U2
SYMBOL res -752 560 R0
SYMATTR InstName R8
SYMATTR Value 2960
SYMBOL res -752 752 R0
SYMATTR InstName R9
SYMATTR Value 20
SYMBOL res -592 720 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL Opamps\\LTC6241 -160 304 R0
SYMATTR InstName U3
SYMBOL res -1200 496 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 10
TEXT -1128 264 Left 2 !K1 L1 L2 1
TEXT -848 80 Left 2 !.tran 0 120u 0 50u