electronics/batteries/low-voltage-shutdown3.circuit

   1 $ 1 5.0E-6 10.20027730826997 50 5.0 50
   2 a 560 400 480 400 1 15.0 -15.0 1000000.0
   3 r 480 400 432 400 0 10000.0
   4 t 432 400 400 400 0 1 0.6010861572617257 0.6015469424280533 100.0
   5 v 560 480 560 416 0 0 40.0 2.5 0.0 0.0 0.5
   6 w 400 416 400 480 0
   7 w 400 480 480 480 0
   8 w 480 480 560 480 0
   9 w 560 384 608 384 0
  10 174 656 336 608 432 0 500000.0 0.005 Resistance
  11 f 400 304 464 304 1 1.5
  12 s 336 304 336 400 0 1 true
  13 s 336 224 336 304 0 1 true
  14 w 400 304 336 304 0
  15 x 439 456 512 462 0 24 TL431
  16 x 256 354 293 360 0 24 ON
  17 x 255 263 302 269 0 24 OFF
  18 w 464 224 400 224 0
  19 w 400 224 336 224 0
  20 w 336 224 208 224 0
  21 172 208 224 144 224 0 6 5.0 35.0 -5.0 0.0 0.5 Voltage
  22 g 208 544 160 544 0
  23 w 656 544 400 544 0
  24 w 400 544 336 544 0
  25 w 336 544 208 544 0
  26 w 656 544 784 544 0
  27 w 784 544 864 544 0
  28 x 158 92 624 98 0 24 Low voltage cutoff (3-36V) using TL431
  29 x 489 302 611 308 0 24 P-MOSFET
  30 x 296 590 712 594 0 16 You can omit 1k resistor if you don't need OFF switch
  31 x 156 123 347 127 0 16 + Built-in switch buttons
  32 x 675 380 714 384 0 16 500k
  33 x 676 398 746 402 0 16 multiturn
  34 x 454 276 461 279 0 10 S
  35 x 458 335 466 338 0 10 D
  36 w 464 320 656 320 0
  37 w 656 320 656 336 0
  38 w 656 320 784 320 0
  39 w 784 320 864 320 0
  40 w 400 304 400 384 0
  41 r 400 480 400 544 0 200.0
  42 r 400 304 400 224 0 200000.0
  43 w 464 288 464 224 0
  44 162 784 432 784 544 1 2.1024259 1.0 0.0 0.0
  45 w 656 432 656 544 0
  46 w 336 480 336 400 0
  47 w 400 480 336 480 0
  48 d 384 416 384 384 1 0.805904783
  49 w 384 384 400 384 0
  50 w 384 416 400 416 0
  51 r 784 432 784 320 0 100.0
  52 x 157 161 347 165 0 16 + Zero off state current
  53 x 157 142 355 146 0 16 + Short circuit protection
  54 x 157 179 823 183 0 16 + Reverse voltage protection unless you use MOSFET with diode or press OFF button
  55 o 18 64 0 289 2.5 0.05 0 -1
  56 o 9 64 0 35 10.0 0.05 1 -1
  57 o 7 64 0 35 5.0 9.765625E-5 2 -1