* SPICE netlist
L1 N005 N002 100 Rpar=20K
R1 N002 N008 100K
R2 N008 0 3.65K
D1 N002 N009 AOT-2015 N=8
D2 N002 N010 AOT-2015 N=8
D3 N002 N011 AOT-2015 N=8
R3 N006 N014 90.9K
R4 N014 0 49.9K
V1 N001 0 48
C1 N002 0 4.7
R5 N006 N016 10K
R6 N016 0 100K
XU1 N006 N007 N001 N005 N001 N017 N004 N012 N006 N006 N008 N013 N015 0 N002 N003 N006 N006 N006 N016 N006 N009 N010 N011 N014 LT3596 ;pnba Vref)DA)Vin)SW)EN/UVLO)Rt)SYNC)Iset1)PWM2)PWM3)FB)Iset2)Iset3)GND)Bias)Boost)CTRL2)PWM1)CTRL3)CTRLM)CTRL1)LED1)LED2)LED3)Tset
R7 0 N017 33.2K
R8 0 N012 20K
R9 0 N013 20K
R10 0 N015 20K
D4 N007 N005 MBRS140
C2 N003 N005 .1
.tran 1.25m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1184 944
WIRE -240 -472 -336 -472
WIRE -96 -472 -240 -472
WIRE 496 -472 48 -472
WIRE -336 -456 -336 -472
WIRE -96 -456 -96 -472
WIRE 48 -456 48 -472
WIRE -240 -392 -240 -472
WIRE -208 -392 -240 -392
WIRE 208 -392 176 -392
WIRE -336 -360 -336 -376
WIRE -208 -312 -240 -312
WIRE 208 -312 208 -328
WIRE 208 -312 176 -312
WIRE 272 -312 208 -312
WIRE 384 -312 352 -312
WIRE 496 -312 496 -472
WIRE 496 -312 384 -312
WIRE 592 -312 496 -312
WIRE 208 -296 208 -312
WIRE 384 -296 384 -312
WIRE 496 -280 496 -312
WIRE -208 -232 -240 -232
WIRE 208 -232 176 -232
WIRE 384 -216 384 -232
WIRE -240 -152 -240 -232
WIRE -208 -152 -240 -152
WIRE 496 -152 496 -200
WIRE 496 -152 176 -152
WIRE 496 -136 496 -152
WIRE -240 -72 -240 -152
WIRE -208 -72 -240 -72
WIRE 272 -72 176 -72
WIRE 448 -72 336 -72
WIRE 496 -40 496 -56
WIRE -240 8 -240 -72
WIRE -208 8 -240 8
WIRE 192 8 176 8
WIRE 448 8 448 -72
WIRE 448 8 256 8
WIRE 592 8 592 -312
WIRE 592 8 448 8
WIRE -240 88 -240 8
WIRE -208 88 -240 88
WIRE 272 88 176 88
WIRE 448 88 448 8
WIRE 448 88 336 88
WIRE -240 168 -240 88
WIRE -208 168 -240 168
WIRE 192 168 176 168
WIRE 288 168 272 168
WIRE -304 216 -480 216
WIRE -240 216 -240 168
WIRE -240 216 -304 216
WIRE -480 232 -480 216
WIRE -304 232 -304 216
WIRE -240 248 -240 216
WIRE -208 248 -240 248
WIRE 192 248 176 248
WIRE 288 248 272 248
WIRE -400 328 -416 328
WIRE -304 328 -304 312
WIRE -304 328 -320 328
WIRE -208 328 -304 328
WIRE 192 328 176 328
WIRE 288 328 272 328
WIRE -576 408 -592 408
WIRE -480 408 -480 312
WIRE -480 408 -496 408
WIRE -208 408 -480 408
WIRE 192 408 176 408
WIRE 288 408 272 408
WIRE -16 472 -16 456
FLAG 496 -40 0
FLAG -16 472 0
FLAG -416 328 0
FLAG 384 -216 0
FLAG -592 408 0
FLAG 288 408 0
FLAG 288 168 0
FLAG 288 248 0
FLAG 288 328 0
FLAG -336 -360 0
SYMBOL ind 256 -296 R270
SYMATTR InstName L1
SYMATTR Value 100
SYMATTR SpiceLine Rpar=20K
SYMBOL res 480 -296 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 480 -152 R0
SYMATTR InstName R2
SYMATTR Value 3.65K
SYMBOL LED 336 -88 R90
SYMATTR InstName D1
SYMATTR Value AOT-2015
SYMATTR Value2 N=8
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 256 -8 R90
SYMATTR InstName D2
SYMATTR Value AOT-2015
SYMATTR Value2 N=8
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 336 72 R90
SYMATTR InstName D3
SYMATTR Value AOT-2015
SYMATTR Value2 N=8
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -320 216 R0
SYMATTR InstName R3
SYMATTR Value 90.9K
SYMBOL res -304 312 R90
SYMATTR InstName R4
SYMATTR Value 49.9K
SYMBOL voltage -336 -472 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL cap 368 -296 R0
SYMATTR InstName C1
SYMATTR Value 4.7
SYMBOL res -496 216 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL res -480 392 R90
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL PowerProducts\\LT3596 -16 -24 R0
SYMATTR InstName U1
SYMBOL res 288 392 R90
SYMATTR InstName R7
SYMATTR Value 33.2K
SYMBOL res 288 152 R90
SYMATTR InstName R8
SYMATTR Value 20K
SYMBOL res 288 232 R90
SYMATTR InstName R9
SYMATTR Value 20K
SYMBOL res 288 312 R90
SYMATTR InstName R10
SYMATTR Value 20K
SYMBOL schottky 192 -232 M180
SYMATTR InstName D4
SYMATTR Value MBRS140
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 192 -392 R0
SYMATTR InstName C2
SYMATTR Value .1