Version 4 SHEET 1 1996 804 WIRE -304 -48 -496 -48 WIRE -128 -48 -304 -48 WIRE -48 -48 -128 -48 WIRE 32 -48 -48 -48 WIRE 160 -48 128 -48 WIRE 368 -48 256 -48 WIRE 432 -48 368 -48 WIRE 496 -48 432 -48 WIRE 624 -48 496 -48 WIRE 496 -32 496 -48 WIRE 624 -32 624 -48 WIRE 112 32 112 0 WIRE 144 32 112 32 WIRE 176 32 176 0 WIRE 176 32 144 32 WIRE 144 48 144 32 WIRE 496 64 496 32 WIRE 624 64 624 48 WIRE -128 80 -128 -48 WIRE -304 96 -304 -48 WIRE -48 112 -48 -48 WIRE -16 112 -48 112 WIRE 368 112 368 -48 WIRE 368 112 288 112 WIRE 432 144 432 -48 WIRE -128 176 -128 160 WIRE -16 176 -128 176 WIRE -304 192 -304 176 WIRE -160 192 -304 192 WIRE -304 208 -304 192 WIRE -160 240 -160 192 WIRE -16 240 -160 240 WIRE 432 240 432 224 WIRE 432 240 288 240 WIRE -304 304 -304 288 WIRE -16 304 -304 304 WIRE -304 320 -304 304 WIRE 144 368 144 352 WIRE -496 400 -496 -48 WIRE -304 416 -304 400 WIRE -496 496 -496 480 FLAG -496 -48 IN FLAG 624 -48 OUT FLAG 144 368 0 FLAG -496 496 0 FLAG -304 416 0 FLAG 624 64 0 FLAG 496 64 0 SYMBOL res -144 176 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R1 SYMATTR Value 510K SYMBOL res -320 80 R0 SYMATTR InstName R2 SYMATTR Value 1820K SYMBOL res -320 192 R0 SYMATTR InstName R3 SYMATTR Value 243K SYMBOL res -320 304 R0 SYMATTR InstName R4 SYMATTR Value 59K SYMBOL nmos 32 0 R270 WINDOW 0 56 49 VTop 2 WINDOW 3 -16 67 VLeft 2 SYMATTR InstName Q1 SYMATTR Value Si4850EY SYMBOL nmos 256 0 M270 WINDOW 0 53 50 VTop 2 WINDOW 3 -16 72 VLeft 2 SYMATTR InstName Q2 SYMATTR Value Si4850EY SYMBOL cap 480 -32 R0 SYMATTR InstName C1 SYMATTR Value 100µ SYMBOL res 416 128 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL voltage -496 384 R0 WINDOW 123 24 146 Left 2 WINDOW 39 24 125 Left 2 SYMATTR Value PWL(0 0 10m 12 60m 12 70m 12 80m 3.125 85m 3.125 85.1m 2.25 90m 2.25 100m 12 140m 12 140.1m 12 150m 19.825 155m 19.825 155.1m 19.825 165m 12 205m 12) SYMATTR InstName V1 SYMBOL res 608 -48 R0 SYMATTR InstName Rload SYMATTR Value 34 SYMBOL SpecialFunctions\\LTC4365-1 144 272 R0 SYMATTR InstName U1 TEXT 488 376 Left 2 !.tran 210m TEXT 728 56 Left 2 ;OV/UV Test Jig\n \nThis circuit tests the LT4365's behavior with "normal" Overvoltage and Undervoltage\nconditions. The part is configured to pass 12V nominally, down to 3V and up to 18V,\nthe same typical automotive application in the datasheet.\n \nV(in) is driven to 12V and held until the part turns on and stabilizes. \nV(in) is then driven below 3V to test the Undervoltage lockout, then below 2.5V\nto test the miniumum voltage threshold.\nV(in) is returned to 12V and held until the part is on and stable again.\nV(in) is driven above 18V to test the Overvoltage lockout.\nFinally, V(in) is returned to 12V and held until the part turns on and stabilizes again.