Version 4
SHEET 1 880 680
WIRE 144 16 -64 16
WIRE 352 16 144 16
WIRE 544 16 352 16
WIRE -64 32 -64 16
WIRE 544 96 544 16
WIRE -64 128 -64 112
WIRE 144 128 144 16
WIRE -208 176 -256 176
WIRE 32 176 -128 176
WIRE 496 176 256 176
WIRE 352 192 352 16
WIRE 544 208 544 192
WIRE -208 272 -256 272
WIRE 32 272 -128 272
WIRE 304 272 256 272
WIRE 352 304 352 288
WIRE 544 304 544 288
WIRE 144 336 144 320
WIRE 352 400 352 384
FLAG -64 128 0
FLAG 144 336 0
FLAG -256 176 0
FLAG -256 272 0
FLAG 352 400 0
FLAG 544 304 0
SYMBOL PowerProducts\\LTC1157 144 224 R0
SYMATTR InstName U1
SYMBOL voltage -64 16 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL nmos 496 96 R0
SYMATTR InstName Q1
SYMATTR Value Si4838DY
SYMBOL voltage -112 176 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 3 0 100n 100n 2.5m 5m)
SYMBOL voltage -112 272 R90
WINDOW 0 -14 8 VBottom 2
WINDOW 3 38 58 VTop 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 3 0 100n 100n 2.5m 5m)
SYMBOL nmos 304 192 R0
SYMATTR InstName Q2
SYMATTR Value Si4838DY
SYMBOL res 336 288 R0
SYMATTR InstName Rload1
SYMATTR Value 10
SYMBOL res 528 192 R0
SYMATTR InstName Rload2
SYMATTR Value 10
TEXT 32 392 Left 2 !.tran 20m startup