Version 4 SHEET 1 5320 2776 WIRE 2064 560 1600 560 WIRE 2528 560 2144 560 WIRE 1472 624 1184 624 WIRE 1600 624 1600 560 WIRE 1600 624 1472 624 WIRE 1952 624 1600 624 WIRE 1968 624 1952 624 WIRE 2064 624 2048 624 WIRE 2192 624 2064 624 WIRE 2400 624 2288 624 WIRE 2528 624 2528 560 WIRE 2528 624 2400 624 WIRE 2592 624 2528 624 WIRE 2704 624 2592 624 WIRE 2832 624 2704 624 WIRE 1184 640 1184 624 WIRE 1472 640 1472 624 WIRE 2704 640 2704 624 WIRE 2832 640 2832 624 WIRE 1920 656 1952 624 WIRE 2096 656 2064 624 WIRE 2592 656 2592 624 WIRE 2992 656 2880 656 WIRE 2992 672 2992 656 WIRE 2272 688 2272 672 WIRE 2896 704 2880 704 WIRE 2400 720 2400 624 WIRE 1184 736 1184 720 WIRE 1472 736 1472 704 WIRE 2592 736 2592 720 WIRE 2704 736 2704 720 WIRE 2832 736 2832 720 WIRE 2992 768 2992 752 WIRE 2192 800 2176 800 WIRE 2272 800 2272 768 WIRE 2272 800 2256 800 WIRE 2352 800 2272 800 WIRE 1920 848 1920 656 WIRE 2096 848 2096 656 WIRE 2272 848 2272 800 WIRE 2400 848 2400 816 WIRE 2528 864 2528 624 WIRE 1600 928 1600 624 WIRE 1744 992 1728 992 WIRE 1840 992 1824 992 WIRE 1600 1056 1600 1008 WIRE 1840 1056 1600 1056 WIRE 2528 1056 2528 944 WIRE 2528 1056 2464 1056 WIRE 1600 1072 1600 1056 WIRE 2528 1072 2528 1056 WIRE 1728 1088 1728 992 WIRE 2272 1136 2272 1120 WIRE 2032 1152 2032 1120 WIRE 1600 1168 1600 1152 WIRE 2528 1168 2528 1152 WIRE 1728 1184 1728 1168 WIRE 2272 1216 2272 1200 FLAG 1184 736 0 FLAG 1184 624 IN FLAG 2832 624 OUT FLAG 2896 704 0 FLAG 1600 1168 0 FLAG 2032 1152 0 FLAG 2272 1216 0 FLAG 2528 1168 0 FLAG 2704 736 0 FLAG 2832 736 0 FLAG 2992 768 0 FLAG 2592 736 0 FLAG 1472 736 0 FLAG 1728 1184 0 FLAG 2176 800 0 SYMBOL SW 2832 736 R180 WINDOW 0 -10 100 Right 2 WINDOW 3 -25 -1 Right 2 SYMATTR InstName S1 SYMATTR Value SHORT SYMBOL voltage 1184 624 R0 WINDOW 123 36 72 Left 2 WINDOW 3 39 47 Left 2 WINDOW 39 37 96 Left 2 WINDOW 40 29 117 Left 2 SYMATTR Value2 1m 12 80m 12 SYMATTR Value PWL(0 0 SYMATTR SpiceLine 80.2m 80 90m 45 SYMATTR SpiceLine2 100m 26.9 120m 12) SYMATTR InstName V1 SYMBOL voltage 2992 656 R0 WINDOW 123 36 67 Left 2 WINDOW 39 28 95 Left 2 WINDOW 3 36 42 Left 2 WINDOW 0 23 14 Left 2 SYMATTR Value2 200m 0 201m 1 SYMATTR SpiceLine 220m 1 221m 0) SYMATTR Value PWL(0 0 SYMATTR InstName V2 SYMBOL res 1584 912 R0 SYMATTR InstName R1 SYMATTR Value 402K SYMBOL res 1584 1056 R0 SYMATTR InstName R2 SYMATTR Value 105K SYMBOL res 1952 640 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 10m SYMBOL res 2256 672 R0 SYMATTR InstName R4 SYMATTR Value 10 SYMBOL res 2512 848 R0 SYMATTR InstName R5 SYMATTR Value 294K SYMBOL res 2512 1056 R0 SYMATTR InstName R6 SYMATTR Value 24.9K SYMBOL cap 2256 1136 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL LT4356-1 2144 1008 R0 SYMATTR InstName U1 SYMBOL nmos 2192 672 R270 WINDOW 0 58 45 VTop 2 WINDOW 3 -21 68 VLeft 2 SYMATTR InstName Q1 SYMATTR Value IRF1310 SYMBOL nmos 2352 720 R0 SYMATTR InstName Q2 SYMATTR Value IRF1310 SYMBOL res 2048 576 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 1K SYMBOL schottky 2576 720 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N5817 SYMATTR Description Zener Diode SYMATTR Type zener SYMBOL schottky 1456 640 R0 SYMATTR InstName D2 SYMATTR Value MBRS360 SYMATTR Description Zener Diode SYMATTR Type zener SYMBOL res 1840 976 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 47K SYMBOL voltage 1728 1072 R0 WINDOW 0 47 1 Right 2 WINDOW 3 35 100 Right 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 5 SYMBOL cap 2256 784 R90 WINDOW 3 32 32 VTop 2 WINDOW 0 0 32 VBottom 2 SYMATTR Value .047µ SYMATTR InstName C2 SYMBOL res 2688 624 R0 SYMATTR InstName Rload SYMATTR Value 50 TEXT 2600 976 Left 2 !.tran 300m TEXT 2600 1040 Left 2 !.model SHORT SW(Ron=10m Roff=1G Vt=0.5 Vh=-.1) TEXT 2112 496 Bottom 2 ;LT4356 - Surge Stopper\nOvervoltage Regulator with Low Battery Detection and Output Keep Alive During Shutdown TEXT 1488 1224 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 © 2010 Linear Technology Inc. All rights reserved.