Version 4
SHEET 1 880 680
WIRE -32 32 -208 32
WIRE 144 32 -32 32
WIRE 224 32 144 32
WIRE 368 32 304 32
WIRE 416 32 368 32
WIRE 528 32 480 32
WIRE 592 32 528 32
WIRE 688 32 592 32
WIRE -208 48 -208 32
WIRE 592 48 592 32
WIRE 688 48 688 32
WIRE 144 96 144 32
WIRE -208 144 -208 128
WIRE 592 144 592 112
WIRE 688 144 688 128
WIRE -112 160 -128 160
WIRE -16 160 -48 160
WIRE 368 160 368 32
WIRE 368 160 304 160
WIRE 528 208 528 32
WIRE -32 240 -32 32
WIRE -16 240 -32 240
WIRE 320 240 304 240
WIRE 368 272 368 256
WIRE -128 336 -144 336
WIRE -16 336 -64 336
WIRE 528 336 528 288
WIRE 528 336 304 336
WIRE 528 352 528 336
WIRE 144 416 144 400
WIRE 528 448 528 432
FLAG 368 272 0
FLAG -208 144 0
FLAG -144 336 0
FLAG 592 144 0
FLAG 528 448 0
FLAG 144 416 0
FLAG 688 144 0
FLAG -128 160 0
FLAG -208 32 IN
FLAG 688 32 OUT
SYMBOL nmos 320 160 R0
SYMATTR InstName Q1
SYMATTR Value Si4820DY
SYMBOL voltage -208 32 R0
WINDOW 0 24 23 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL cap -64 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 59 34 VTop 2
SYMATTR InstName C1
SYMATTR Value 4700p
SYMATTR SpiceLine Rser=11.8K
SYMBOL ind 208 48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µ
SYMATTR SpiceLine Rser=20m
SYMBOL schottky 416 48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value B520C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 576 48 R0
SYMATTR InstName C2
SYMATTR Value 150µ
SYMATTR SpiceLine Rser=15m
SYMBOL res 512 192 R0
SYMATTR InstName R1
SYMATTR Value 108K
SYMBOL res 512 336 R0
SYMATTR InstName R2
SYMATTR Value 12K
SYMBOL PowerProducts\\LTC3873-5 144 240 R0
SYMATTR InstName U1
SYMBOL cap -48 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 61 51 VTop 2
WINDOW 123 87 43 VTop 2
SYMATTR InstName C3
SYMATTR Value 1000p
SYMBOL res 672 32 R0
SYMATTR InstName Rload
SYMATTR Value 6
TEXT 264 432 Left 2 !.tran 7m startup