* SPICE netlist
R1 N006 0 255K
V1 IN 0 20
L1 N003 N002 10 Rser=10m
C3 N001 N003 1
C4 N002 0 47 V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
R2 N004 N009 10K
C5 N004 N009 .01
Rload OUT 0 2
R4 N002 N004 22m
R3 N004 OUT .26
R5 0 N008 16.5K
XU1 MP_01 N010 N006 IN IN MP_02 MP_03 MP_04 MP_05 MP_06 MP_07 MP_08 N003 MP_09 MP_10 N001 MP_11 N002 N005 N009 N002 N004 N008 N007 0 LT3697 ;pnba )Vc)Rt)EN)Vin))))))))SW)))BST))SYS)_FLT)USB5V)ISP)ISN)RCBL)Rlim)GND
C6 N010 0 1000p Rser=7.5K Cpar=330p
D1 N002 N001 1N914
C1 N004 0 100 Rser=5m
D2 0 N003 B550C
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1088 672
WIRE -80 -320 -240 -320
WIRE 0 -320 -80 -320
WIRE 96 -320 64 -320
WIRE -80 -304 -80 -320
WIRE -448 -288 -544 -288
WIRE -336 -288 -448 -288
WIRE -544 -272 -544 -288
WIRE -336 -272 -336 -288
WIRE -240 -272 -240 -320
WIRE -448 -208 -448 -288
WIRE -432 -208 -448 -208
WIRE -80 -208 -80 -240
WIRE -80 -208 -144 -208
WIRE 0 -208 -80 -208
WIRE 96 -208 96 -320
WIRE 96 -208 80 -208
WIRE 144 -208 96 -208
WIRE 240 -208 144 -208
WIRE 256 -208 240 -208
WIRE 352 -208 336 -208
WIRE 384 -208 352 -208
WIRE 432 -208 384 -208
WIRE 544 -208 512 -208
WIRE -80 -192 -80 -208
WIRE 144 -192 144 -208
WIRE 384 -192 384 -208
WIRE 544 -192 544 -208
WIRE -544 -176 -544 -192
WIRE -432 -112 -448 -112
WIRE -128 -112 -144 -112
WIRE 144 -112 144 -128
WIRE -128 -96 -128 -112
WIRE 96 -96 96 -208
WIRE 96 -96 -128 -96
WIRE 384 -96 384 -128
WIRE 544 -96 544 -112
WIRE -528 -16 -544 -16
WIRE -432 -16 -448 -16
WIRE 240 -16 240 -208
WIRE 240 -16 -144 -16
WIRE -432 80 -448 80
WIRE 240 80 -144 80
WIRE 352 80 352 -208
WIRE 352 80 240 80
WIRE 240 96 240 80
WIRE 352 96 352 80
WIRE -528 176 -544 176
WIRE -432 176 -448 176
WIRE 240 176 240 160
WIRE 240 176 -144 176
WIRE 352 176 240 176
WIRE -336 256 -336 240
WIRE -240 256 -240 240
WIRE -240 336 -240 320
FLAG -336 256 0
FLAG -240 336 0
FLAG -544 -16 0
FLAG -544 -176 0
FLAG 144 -112 0
FLAG 544 -96 0
FLAG 544 -208 OUT
FLAG -544 -288 IN
FLAG -544 176 0
FLAG 384 -96 0
FLAG -80 -128 0
SYMBOL res -432 -32 R90
SYMATTR InstName R1
SYMATTR Value 255K
SYMBOL voltage -544 -288 R0
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL ind -16 -192 R270
SYMATTR InstName L1
SYMATTR Value 10
SYMATTR SpiceLine Rser=10m
SYMBOL cap -96 -304 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL cap 128 -192 R0
SYMATTR Value 47
SYMATTR InstName C4
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
SYMBOL res 336 80 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL cap 224 96 R0
SYMATTR InstName C5
SYMATTR Value .01
SYMBOL res 528 -208 R0
SYMATTR InstName Rload
SYMATTR Value 2
SYMBOL res 240 -192 R270
SYMATTR InstName R4
SYMATTR Value 22m
SYMBOL res 416 -192 R270
SYMATTR InstName R3
SYMATTR Value .26
SYMBOL res -544 192 R270
SYMATTR InstName R5
SYMATTR Value 16.5K
SYMBOL PowerProducts\\LT3697 -288 -16 R0
SYMATTR InstName U1
SYMBOL cap -256 256 R0
SYMATTR SpiceLine Rser=7.5K Cpar=330p
SYMATTR InstName C6
SYMATTR Value 1000p
SYMBOL diode 64 -336 R90
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL cap 368 -192 R0
SYMATTR InstName C1
SYMATTR Value 100
SYMATTR SpiceLine Rser=5m
SYMBOL schottky -96 -128 M180
SYMATTR InstName D2
SYMATTR Value B550C
SYMATTR Description Diode
SYMATTR Type diode