Version 4
SHEET 1 1176 680
WIRE -48 176 -272 176
WIRE 32 176 -48 176
WIRE 368 176 320 176
WIRE 432 176 368 176
WIRE 528 176 432 176
WIRE -272 192 -272 176
WIRE -48 192 -48 176
WIRE 528 192 528 176
WIRE 432 208 432 176
WIRE 32 272 16 272
WIRE 368 272 368 176
WIRE 368 272 320 272
WIRE -272 288 -272 272
WIRE -48 288 -48 256
WIRE 432 288 432 272
WIRE 528 288 528 272
WIRE 176 368 176 336
FLAG -272 288 0
FLAG 176 368 0
FLAG 432 288 0
FLAG 528 288 0
FLAG -272 176 IN
FLAG 528 176 OUT
FLAG -48 288 0
SYMBOL voltage -272 176 R0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 1 10)
SYMBOL cap 416 208 R0
SYMATTR InstName C1
SYMATTR Value 1.5µ
SYMBOL res 512 176 R0
SYMATTR InstName Rload
SYMATTR Value 16.7
SYMBOL PowerProducts\\LT1521-5 176 224 R0
SYMATTR InstName U1
SYMBOL cap -64 192 R0
SYMATTR InstName C2
SYMATTR Value 1µ
TEXT 384 352 Left 2 !.tran 1
TEXT 168 120 Bottom 2 ;LT1521-5 - 300mA Low Dropout Regulators with µPower Quiescent Current and Shutdown\n5V Battery-Powered Supply with Shutdown\nInput: 6V to 20V     Output: 5V @ 300mA
TEXT -488 376 Left 2 ;Note:\n  If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n  It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n  Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n  Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n  Copyright © 2012 Linear Technology Inc. All rights reserved.