Version 4
SHEET 1 1432 680
WIRE 64 -112 -64 -112
WIRE 464 -112 64 -112
WIRE 864 -112 464 -112
WIRE -64 -96 -64 -112
WIRE 464 -96 464 -112
WIRE 864 -48 864 -112
WIRE -64 0 -64 -16
WIRE 64 16 64 -112
WIRE 96 16 64 16
WIRE 464 16 464 -16
WIRE 464 16 416 16
WIRE 592 16 464 16
WIRE 736 16 672 16
WIRE 96 112 80 112
WIRE 864 112 864 32
WIRE 864 112 416 112
WIRE 96 208 80 208
WIRE 432 208 416 208
FLAG -64 0 0
FLAG 80 112 0
FLAG 736 16 0
SYMBOL voltage -64 -112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vbatt
SYMATTR Value 3.7
SYMBOL res 448 -112 R0
SYMATTR InstName Rsense
SYMATTR Value 100m
SYMBOL res 848 -64 R0
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL voltage 576 16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName V2
SYMATTR Value PULSE(3.9 3.5 1s 10m 10m 1 2)
SYMBOL LTC2941 256 112 R0
SYMATTR Value B_Reg=60 CD_Reg=32767
SYMATTR InstName U1
TEXT 600 272 Left 2 !.tran 5