* SPICE netlist
V1 IN 0 12
M1 IN N006 N008 N008 Si7884DP
M2 N008 N010 0 0 Si7884DP
D1 N001 N004 1N5817
C1 N001 0 10
C2 N002 0 2n
C3 N004 N008 .15
L1 N008 N009 1.1 Rser=15m Rpar=5K
R1 N009 OUT 2.5m
C4 OUT 0 1000
D2 OUT N014 PT-121-B
M3 N014 N015 0 0 IRF6620
R2 N012 0 10K
R3 OUT N012 60.4K
C5 N016 N018 4.7n
R4 N005 0 82.5K
C6 N011 0 .005
V2 N007 0 1.5
V3 N003 0 5
V4 N013 0 PULSE(0 2 1m 1u 1u .1m .3m)
XU1 0 N003 N002 N003 N017 N007 0 N011 MP_01 N012 N009 OUT NC_02 N016 N005 MP_03 N003 N013 N015 MP_04 MP_05 NC_06 N006 N008 N004 N010 N001 IN LT3743 ;pnba GND)EN/UVLO)Vref)CTRL_T)SYNC)CTRL_H)CTRL_L)SS))FB)Sense+)Sense-)VCL)VCH)Rt))CTRL_SEL)PWM)PWMGH)))PWMGL)HG)SW)CBOOT)LG)Vcc_int)Vin
R5 N018 0 34K
V5 N017 0 PULSE(0 2 0 1n 1n 833.33n 1.67u)
.tran 5m startup

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1440 1216
WIRE -192 -592 -192 -608
WIRE -64 -592 -64 -608
WIRE 304 -528 64 -528
WIRE 368 -528 304 -528
WIRE -64 -512 -64 -528
WIRE 192 -512 -64 -512
WIRE 368 -512 368 -528
WIRE -192 -496 -192 -528
WIRE -64 -496 -64 -512
WIRE 64 -496 64 -528
WIRE -480 -432 -576 -432
WIRE -288 -432 -480 -432
WIRE 192 -432 192 -448
WIRE 192 -432 160 -432
WIRE -576 -416 -576 -432
WIRE 304 -416 304 -528
WIRE 368 -400 368 -432
WIRE -384 -336 -400 -336
WIRE -288 -336 -304 -336
WIRE 256 -336 160 -336
WIRE -576 -320 -576 -336
WIRE 192 -320 192 -432
WIRE -288 -240 -416 -240
WIRE 192 -240 192 -256
WIRE 192 -240 160 -240
WIRE 304 -240 304 -320
WIRE 304 -240 192 -240
WIRE 336 -240 304 -240
WIRE 448 -240 416 -240
WIRE 464 -240 448 -240
WIRE 560 -240 544 -240
WIRE 624 -240 560 -240
WIRE 720 -240 624 -240
WIRE -416 -224 -416 -240
WIRE 304 -224 304 -240
WIRE 624 -224 624 -240
WIRE -288 -144 -304 -144
WIRE 256 -144 160 -144
WIRE 624 -144 624 -160
WIRE -416 -128 -416 -144
WIRE 304 -112 304 -128
WIRE -384 -48 -416 -48
WIRE -288 -48 -320 -48
WIRE 448 -48 448 -240
WIRE 448 -48 160 -48
WIRE 720 -48 720 -240
WIRE -480 48 -480 -432
WIRE -304 48 -480 48
WIRE -288 48 -304 48
WIRE 560 48 560 -240
WIRE 560 48 160 48
WIRE -304 144 -304 48
WIRE -288 144 -304 144
WIRE 560 144 560 128
WIRE 560 144 160 144
WIRE 560 160 560 144
WIRE -288 240 -720 240
WIRE 560 256 560 240
WIRE 720 256 720 16
WIRE -720 288 -720 240
WIRE -288 336 -320 336
WIRE 672 336 160 336
WIRE 720 384 720 352
WIRE -720 400 -720 368
WIRE 64 432 64 400
WIRE -192 448 -192 400
WIRE 64 512 64 496
WIRE -192 560 -192 528
WIRE 64 608 64 592
FLAG 368 -400 0
FLAG 368 -528 IN
FLAG 304 -112 0
FLAG -64 -608 0
FLAG -192 -608 0
FLAG 624 -144 0
FLAG 720 384 0
FLAG 720 -240 OUT
FLAG 560 256 0
FLAG 64 608 0
FLAG -320 336 0
FLAG -400 -336 0
FLAG -304 -144 0
FLAG -416 -48 0
FLAG -416 -128 0
FLAG -576 -320 0
FLAG -720 400 0
FLAG -192 560 0
SYMBOL voltage 368 -528 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL nmos 256 -416 R0
SYMATTR InstName M1
SYMATTR Value Si7884DP
SYMBOL nmos 256 -224 R0
SYMATTR InstName M2
SYMATTR Value Si7884DP
SYMBOL schottky 176 -512 R0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -80 -528 M180
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL cap -208 -528 M180
SYMATTR InstName C2
SYMATTR Value 2n
SYMBOL cap 176 -320 R0
SYMATTR InstName C3
SYMATTR Value .15
SYMBOL ind 320 -224 R270
SYMATTR InstName L1
SYMATTR Value 1.1
SYMATTR SpiceLine Rser=15m Rpar=5K
SYMBOL res 448 -224 R270
SYMATTR InstName R1
SYMATTR Value 2.5m
SYMBOL cap 608 -224 R0
SYMATTR InstName C4
SYMATTR Value 1000
SYMBOL LED 704 -48 R0
SYMATTR InstName D2
SYMATTR Value PT-121-B
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 672 256 R0
SYMATTR InstName M3
SYMATTR Value IRF6620
SYMBOL res 544 144 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 544 32 R0
SYMATTR InstName R3
SYMATTR Value 60.4K
SYMBOL cap 48 432 R0
SYMATTR Value 4.7n
SYMATTR InstName C5
SYMBOL res -288 -352 R90
SYMATTR InstName R4
SYMATTR Value 82.5K
SYMBOL cap -320 -64 R90
SYMATTR InstName C6
SYMATTR Value .005
SYMBOL voltage -416 -240 R0
SYMATTR InstName V2
SYMATTR Value 1.5
SYMBOL voltage -576 -432 R0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL voltage -720 272 R0
SYMATTR Value PULSE(0 2 1m 1u 1u .1m .3m)
SYMATTR InstName V4
SYMBOL LT3743 -64 -48 R0
SYMATTR InstName U1
SYMBOL res 48 496 R0
SYMATTR InstName R5
SYMATTR Value 34K
SYMBOL voltage -192 432 R0
SYMATTR Value PULSE(0 2 0 1n 1n 833.33n 1.67u)
SYMATTR InstName V5