* SPICE netlist
XU1 IN IN N010 N006 N008 N005 N003 N004 N011 N009 N001 N002 0 LT1939 ;pnba Vin)_SHDN)SS)Pgood)Vc)Rt)_Pgood)FB)LFB)LDRV)Boost)SW)GND
R1 OUT1 N004 42.2K
R2 N004 0 8.06K
R3 N009 OUT2 1K
R4 N011 OUT2 24.9K
R5 N011 0 8.06K
L1 N002 OUT1 6.8
C1 N001 N002 .47
V1 IN 0 12
R6 N005 0 53.6K
R7 N007 0 40.2K
C2 N010 0 .001
C3 N008 N007 330p
D1 0 N002 1N5818
C4 OUT1 0 22
Q1 OUT1 N009 OUT2 0 FZT849
C5 OUT2 0 22
R8 N006 OUT1 100K
Rload1 OUT1 0 5
Rload2 OUT2 0 5
R9 IN N003 100K
D2 OUT1 N001 1N4148
.tran 500u startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1024 672
WIRE -400 -320 -512 -320
WIRE -224 -320 -400 -320
WIRE 48 -320 -64 -320
WIRE 128 -320 48 -320
WIRE 240 -320 192 -320
WIRE -512 -304 -512 -320
WIRE -224 -304 -224 -320
WIRE -64 -304 -64 -320
WIRE 48 -304 48 -320
WIRE -400 -224 -400 -320
WIRE -304 -224 -400 -224
WIRE 48 -224 48 -240
WIRE 48 -224 16 -224
WIRE 128 -224 48 -224
WIRE 240 -224 240 -320
WIRE 240 -224 208 -224
WIRE 352 -224 240 -224
WIRE 416 -224 352 -224
WIRE 480 -224 416 -224
WIRE -512 -208 -512 -224
WIRE -400 -208 -400 -224
WIRE 240 -208 240 -224
WIRE 352 -208 352 -224
WIRE 480 -208 480 -224
WIRE 48 -144 48 -160
WIRE -400 -112 -400 -128
WIRE -304 -112 -400 -112
WIRE 240 -112 240 -128
WIRE 240 -112 16 -112
WIRE 352 -112 352 -144
WIRE 480 -112 480 -128
WIRE -432 0 -496 0
WIRE -304 0 -352 0
WIRE 80 0 16 0
WIRE 416 0 416 -224
WIRE 416 0 160 0
WIRE 416 64 416 0
WIRE -480 112 -496 112
WIRE -384 112 -400 112
WIRE -304 112 -320 112
WIRE 288 112 16 112
WIRE 352 112 288 112
WIRE 288 128 288 112
WIRE -432 224 -496 224
WIRE -304 224 -368 224
WIRE 48 224 16 224
WIRE 128 224 48 224
WIRE 288 224 288 208
WIRE 288 224 208 224
WIRE 416 224 416 160
WIRE 416 224 288 224
WIRE 512 224 416 224
WIRE 48 240 48 224
WIRE 416 240 416 224
WIRE 512 240 512 224
WIRE -144 288 -144 272
WIRE 48 336 48 320
WIRE 416 336 416 304
WIRE 512 336 512 320
FLAG -512 -208 0
FLAG -496 0 0
FLAG -496 224 0
FLAG -496 112 0
FLAG -144 288 0
FLAG 48 336 0
FLAG 240 -32 0
FLAG 48 -144 0
FLAG 352 -112 0
FLAG 416 336 0
FLAG -512 -320 IN
FLAG 480 -224 OUT1
FLAG 512 336 0
FLAG 480 -112 0
FLAG 512 224 OUT2
SYMBOL PowerProducts\\LT1939 -144 0 R0
SYMATTR InstName U1
SYMBOL res 224 -224 R0
SYMATTR InstName R1
SYMATTR Value 42.2K
SYMBOL res 224 -128 R0
SYMATTR InstName R2
SYMATTR Value 8.06K
SYMBOL res 272 112 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL res 112 208 M90
SYMATTR InstName R4
SYMATTR Value 24.9K
SYMBOL res 32 224 R0
SYMATTR InstName R5
SYMATTR Value 8.06K
SYMBOL ind 112 -208 R270
SYMATTR InstName L1
SYMATTR Value 6.8
SYMBOL cap 32 -304 R0
SYMATTR Value .47
SYMATTR InstName C1
SYMBOL voltage -512 -320 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -336 -16 R90
SYMATTR InstName R6
SYMATTR Value 53.6K
SYMBOL res -384 96 R90
SYMATTR InstName R7
SYMATTR Value 40.2K
SYMBOL cap -368 208 R90
SYMATTR InstName C2
SYMATTR Value .001
SYMBOL cap -320 96 R90
SYMATTR InstName C3
SYMATTR Value 330p
SYMBOL schottky 32 -160 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 336 -208 R0
SYMATTR InstName C4
SYMATTR Value 22
SYMBOL npn 352 64 R0
SYMATTR InstName Q1
SYMATTR Value FZT849
SYMBOL cap 400 240 R0
SYMATTR Value 22
SYMATTR InstName C5
SYMBOL res 64 -16 M90
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res 464 -224 R0
SYMATTR InstName Rload1
SYMATTR Value 5
SYMBOL res 496 224 R0
SYMATTR InstName Rload2
SYMATTR Value 5
SYMBOL res -416 -224 R0
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL diode 192 -336 R90
SYMATTR InstName D2
SYMATTR Value 1N4148