Version 4
SHEET 1 2724 2628
WIRE 192 -160 176 -160
WIRE 304 -160 272 -160
WIRE 416 -160 368 -160
WIRE 448 -160 416 -160
WIRE 544 -160 544 -192
WIRE 544 -160 512 -160
WIRE 576 -160 544 -160
WIRE 688 -160 688 -192
WIRE 688 -160 656 -160
WIRE 848 -160 688 -160
WIRE 960 -160 848 -160
WIRE 1008 -160 960 -160
WIRE 1120 -160 1104 -160
WIRE 1232 -160 1120 -160
WIRE 1360 -160 1232 -160
WIRE 1488 -160 1360 -160
WIRE 1520 -160 1488 -160
WIRE 848 -144 848 -160
WIRE 960 -144 960 -160
WIRE 848 -48 848 -64
WIRE 864 -48 848 -48
WIRE 960 -48 960 -64
WIRE 960 -48 928 -48
WIRE 1056 -48 1056 -96
WIRE 1056 -48 960 -48
WIRE 1488 -48 1488 -160
WIRE 1120 -32 1120 -160
WIRE 1184 -32 1120 -32
WIRE 176 -16 176 -160
WIRE 416 -16 416 -160
WIRE 544 -16 544 -160
WIRE 688 -16 688 -160
WIRE 960 -16 960 -48
WIRE 1120 -16 1120 -32
WIRE 1232 16 1232 -160
WIRE 1360 16 1360 -160
WIRE 848 32 848 -48
WIRE 848 32 832 32
WIRE 896 32 848 32
WIRE 1184 32 1184 -32
WIRE 848 64 848 32
WIRE 1040 80 960 80
WIRE 1120 80 1040 80
WIRE 1040 128 1040 80
WIRE 848 144 848 128
WIRE 176 224 176 64
WIRE 416 224 416 48
WIRE 416 224 176 224
WIRE 544 224 544 48
WIRE 544 224 416 224
WIRE 688 224 688 48
WIRE 688 224 544 224
WIRE 848 224 848 208
WIRE 848 224 688 224
WIRE 1040 224 1040 208
WIRE 1040 224 848 224
WIRE 1232 224 1232 80
WIRE 1232 224 1040 224
WIRE 1360 224 1360 96
WIRE 1360 224 1232 224
WIRE 1488 224 1488 32
WIRE 1488 224 1360 224
WIRE 176 240 176 224
WIRE 1504 432 1456 432
WIRE 1616 432 1568 432
WIRE 192 496 176 496
WIRE 304 496 272 496
WIRE 416 496 368 496
WIRE 448 496 416 496
WIRE 544 496 544 464
WIRE 544 496 512 496
WIRE 576 496 544 496
WIRE 688 496 688 464
WIRE 688 496 656 496
WIRE 880 496 688 496
WIRE 1008 496 880 496
WIRE 1184 496 1008 496
WIRE 1344 496 1184 496
WIRE 1456 496 1456 432
WIRE 1456 496 1344 496
WIRE 1504 496 1456 496
WIRE 1616 496 1616 432
WIRE 1616 496 1600 496
WIRE 1696 496 1616 496
WIRE 1808 496 1696 496
WIRE 1840 496 1808 496
WIRE 1008 512 1008 496
WIRE 1184 512 1184 496
WIRE 1344 512 1344 496
WIRE 880 560 880 496
WIRE 1264 560 1248 560
WIRE 1280 560 1264 560
WIRE 1552 576 1552 560
WIRE 1616 576 1552 576
WIRE 1456 592 1456 496
WIRE 1552 592 1552 576
WIRE 1008 608 1008 592
WIRE 1008 608 944 608
WIRE 1008 624 1008 608
WIRE 1264 624 1264 560
WIRE 1344 624 1344 608
WIRE 1344 624 1264 624
WIRE 880 672 880 656
WIRE 944 672 880 672
WIRE 1088 672 1072 672
WIRE 1184 672 1184 608
WIRE 1184 672 1152 672
WIRE 1504 672 1504 656
WIRE 1504 672 1184 672
WIRE 176 704 176 496
WIRE 1184 704 1184 672
WIRE 1344 704 1344 624
WIRE 416 720 416 496
WIRE 544 720 544 496
WIRE 688 720 688 496
WIRE 1808 720 1808 496
WIRE 1008 752 1008 720
WIRE 1008 752 992 752
WIRE 1072 752 1072 672
WIRE 1072 752 1008 752
WIRE 1120 752 1072 752
WIRE 1584 752 1408 752
WIRE 1696 752 1696 496
WIRE 1696 752 1584 752
WIRE 880 800 880 672
WIRE 880 800 784 800
WIRE 1264 800 1184 800
WIRE 1344 800 1264 800
WIRE 880 816 880 800
WIRE 1264 816 1264 800
WIRE 1008 864 1008 752
WIRE 1008 864 944 864
WIRE 1136 864 1008 864
WIRE 1200 864 1136 864
WIRE 1584 864 1584 752
WIRE 1696 864 1696 752
WIRE 1008 880 1008 864
WIRE 1136 928 1136 864
WIRE 784 960 784 800
WIRE 880 960 880 912
WIRE 1264 960 1264 912
WIRE 1008 976 1008 944
WIRE 176 1056 176 784
WIRE 416 1056 416 784
WIRE 416 1056 176 1056
WIRE 544 1056 544 784
WIRE 544 1056 416 1056
WIRE 688 1056 688 784
WIRE 688 1056 544 1056
WIRE 784 1056 784 1040
WIRE 784 1056 688 1056
WIRE 880 1056 880 1040
WIRE 880 1056 784 1056
WIRE 1008 1056 1008 1040
WIRE 1008 1056 880 1056
WIRE 1136 1056 1136 992
WIRE 1136 1056 1008 1056
WIRE 1264 1056 1264 1040
WIRE 1264 1056 1136 1056
WIRE 1584 1056 1584 928
WIRE 1584 1056 1264 1056
WIRE 1696 1056 1696 944
WIRE 1696 1056 1584 1056
WIRE 1808 1056 1808 800
WIRE 1808 1056 1696 1056
WIRE 176 1072 176 1056
WIRE 448 1264 176 1264
WIRE 608 1264 448 1264
WIRE 800 1264 608 1264
WIRE 960 1264 800 1264
WIRE 1184 1264 960 1264
WIRE 448 1280 448 1264
WIRE 608 1280 608 1264
WIRE 800 1280 800 1264
WIRE 960 1280 960 1264
WIRE 880 1328 864 1328
WIRE 896 1328 880 1328
WIRE 1184 1376 1184 1264
WIRE 880 1392 880 1328
WIRE 960 1392 960 1376
WIRE 960 1392 880 1392
WIRE 800 1424 800 1376
WIRE 1072 1424 800 1424
WIRE 1120 1424 1072 1424
WIRE 800 1456 800 1424
WIRE 960 1456 960 1392
WIRE 176 1472 176 1264
WIRE 448 1504 448 1360
WIRE 736 1504 448 1504
WIRE 1040 1504 1024 1504
WIRE 1072 1504 1072 1424
WIRE 1088 1504 1072 1504
WIRE 1184 1504 1184 1472
WIRE 1184 1504 1152 1504
WIRE 880 1552 800 1552
WIRE 960 1552 880 1552
WIRE 608 1568 608 1360
WIRE 1040 1568 1040 1504
WIRE 1040 1568 608 1568
WIRE 448 1584 448 1504
WIRE 608 1584 608 1568
WIRE 672 1632 512 1632
WIRE 960 1632 672 1632
WIRE 1184 1632 1184 1504
WIRE 1184 1632 960 1632
WIRE 1216 1632 1184 1632
WIRE 880 1648 880 1552
WIRE 880 1648 800 1648
WIRE 880 1664 880 1648
WIRE 1184 1664 1184 1632
WIRE 608 1696 608 1680
WIRE 960 1712 960 1632
WIRE 960 1712 944 1712
WIRE 448 1792 448 1680
WIRE 608 1792 608 1776
WIRE 608 1792 448 1792
WIRE 608 1808 608 1792
WIRE 800 1808 800 1648
WIRE 880 1808 880 1760
WIRE 176 1904 176 1552
WIRE 608 1904 608 1888
WIRE 608 1904 176 1904
WIRE 800 1904 800 1888
WIRE 800 1904 608 1904
WIRE 880 1904 880 1888
WIRE 880 1904 800 1904
WIRE 1184 1904 1184 1744
WIRE 1184 1904 880 1904
WIRE 608 1920 608 1904
FLAG 176 240 0
FLAG 1520 -160 OutLDO
FLAG 544 -192 Inv
FLAG 688 -192 InvFilt
FLAG 176 1072 0
FLAG 1840 496 OutLDO2
FLAG 544 464 Inv2
FLAG 688 464 InvFilt2
FLAG 992 752 Ref2
FLAG 832 32 Ref
FLAG 1216 1632 VrefBG2
FLAG 608 1920 0
SYMBOL voltage 176 -32 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 1m 1u 1u 50u 100u)
SYMBOL cap 368 -176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value {Cinv}
SYMBOL schottky 512 -176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 400 -16 R0
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 528 48 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value {Cinv}
SYMBOL res 288 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 22
SYMBOL npn 1104 -96 M270
SYMATTR InstName Q1
SYMATTR Value BC846B
SYMBOL res 1024 112 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL pnp 1184 -16 M0
WINDOW 0 5 109 Left 2
WINDOW 3 7 141 Left 2
SYMATTR InstName Q2
SYMATTR Value BC856B
SYMBOL res 864 -160 M0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL pnp 896 -16 R0
WINDOW 0 22 113 Left 2
WINDOW 3 24 143 Left 2
SYMATTR InstName Q3
SYMATTR Value BC856B
SYMBOL diode 864 208 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL res 944 -160 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL diode 864 128 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D6
SYMATTR Value 1N4148
SYMBOL res 672 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value {Rfilt}
SYMBOL cap 672 -16 R0
SYMATTR InstName C3
SYMATTR Value {Cfilt}
SYMBOL cap 1216 16 R0
SYMATTR InstName C4
SYMATTR Value {Cout}
SYMBOL cap 928 -64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value {Cstab}
SYMBOL voltage 176 688 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 1m 1u 1u 50u 100u)
SYMBOL cap 368 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value {Cinv}
SYMBOL schottky 512 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D4
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 400 720 R0
SYMATTR InstName D5
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 528 784 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C7
SYMATTR Value {Cinv}
SYMBOL res 288 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 22
SYMBOL npn 1552 656 M270
SYMATTR InstName Q4
SYMATTR Value BC846B
SYMBOL res 1248 944 R0
SYMATTR InstName R6
SYMATTR Value 2k2
SYMBOL pnp 1408 704 M0
WINDOW 0 38 49 Left 2
WINDOW 3 2 67 Right 2
SYMATTR InstName Q5
SYMATTR Value BC856B
SYMBOL pnp 1120 704 R0
WINDOW 0 39 48 Left 2
WINDOW 3 4 69 Right 2
SYMATTR InstName Q6
SYMATTR Value BC856B
SYMBOL diode 992 1040 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D7
SYMATTR Value 1N4148
SYMBOL diode 992 944 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D8
SYMATTR Value 1N4148
SYMBOL res 672 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value {Rfilt}
SYMBOL cap 672 720 R0
SYMATTR InstName C8
SYMATTR Value {Cfilt}
SYMBOL current 1808 800 M180
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value PULSE(0 {l_i} {l_delay} 100u 100u {1/l_f/2} {1/l_f})
SYMBOL cap 1152 656 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C10
SYMATTR Value {Cstab}
SYMBOL npn 944 720 M180
SYMATTR InstName Q7
SYMATTR Value BC846B
SYMBOL res 1024 496 M0
SYMATTR InstName R11
SYMATTR Value 2k2
SYMBOL npn 944 656 R180
SYMATTR InstName Q8
SYMATTR Value BC846B
SYMBOL pnp 1200 816 R0
SYMATTR InstName Q9
SYMATTR Value BC856B
SYMBOL pnp 944 816 M0
SYMATTR InstName Q10
SYMATTR Value BC856B
SYMBOL res 896 944 M0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL cap 1568 864 R0
SYMATTR InstName C9
SYMATTR Value {Cout}
SYMBOL npn 1280 608 M180
SYMATTR InstName Q11
SYMATTR Value BC846B
SYMBOL npn 1248 608 R180
SYMATTR InstName Q12
SYMATTR Value BC846B
SYMBOL res 1600 480 R0
SYMATTR InstName R7
SYMATTR Value 470
SYMBOL pnp 1504 560 R270
WINDOW 0 -31 63 VRight 2
WINDOW 3 -59 64 VRight 2
SYMATTR InstName Q13
SYMATTR Value BC856B
SYMBOL res 1680 848 R0
SYMATTR InstName R8
SYMATTR Value {Rload}
SYMBOL diode 1504 416 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D9
SYMATTR Value 1N4148
SYMBOL cap 1120 928 R0
SYMATTR InstName C11
SYMATTR Value {Cref}
SYMBOL res 1344 0 R0
SYMATTR InstName R13
SYMATTR Value {Rload}
SYMBOL current 1488 32 M180
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(0 {l_i} {l_delay} 100u 100u {1/l_f/2} {1/l_f})
SYMBOL voltage 176 1456 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value SINE(10 7 100)
SYMBOL res 864 1904 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R21
SYMATTR Value 1k
SYMBOL res 1168 1648 R0
SYMATTR InstName R22
SYMATTR Value 4k7
SYMBOL cap 1152 1488 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C16
SYMATTR Value 100p
SYMBOL npn 512 1584 M0
SYMATTR InstName Q26
SYMATTR Value BC846B
SYMBOL npn 672 1584 M0
SYMATTR InstName Q27
SYMATTR Value BC846B
SYMBOL res 432 1264 R0
SYMATTR InstName R23
SYMATTR Value 2k2
SYMBOL res 592 1264 R0
SYMATTR InstName R25
SYMATTR Value 47k
SYMBOL res 592 1680 R0
SYMATTR InstName R24
SYMATTR Value 4k7
SYMBOL npn 1024 1456 M0
SYMATTR InstName Q28
SYMATTR Value BC846B
SYMBOL npn 736 1456 R0
SYMATTR InstName Q21
SYMATTR Value BC846B
SYMBOL pnp 1120 1472 M180
SYMATTR InstName Q22
SYMATTR Value BC856B
SYMBOL pnp 896 1376 M180
SYMATTR InstName Q23
SYMATTR Value BC856B
SYMBOL pnp 864 1376 R180
SYMATTR InstName Q24
SYMATTR Value BC856B
SYMBOL res 592 1792 R0
SYMATTR InstName R26
SYMATTR Value 1k5
SYMBOL npn 944 1664 M0
SYMATTR InstName Q14
SYMATTR Value BC846B
SYMBOL res 816 1904 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R14
SYMATTR Value 100k
SYMBOL res 800 944 M0
SYMATTR InstName R15
SYMATTR Value 1Meg
TEXT 136 344 Left 2 !.tran 20m
TEXT 1688 432 Left 2 ;0.5-1.3 V/15 mA\nV_in(min): 1.8 for 0.95 V V_out
TEXT 168 -448 Left 2 !.param Cinv=10u Rfilt=22 Cfilt=10u Cstab=100p Cref=470p Cout=10u Rload=10k
TEXT 168 -392 Left 2 !# Load step definition\n.param l_delay=10m l_f=50 l_i=15m
TEXT 168 -520 Left 2 !#.step temp list -40 45 125\n#.temp 45
TEXT 704 1080 Left 2 ;Startup\nhelp
TEXT 744 1936 Left 2 ;Startup\nhelp
TEXT 176 1232 Left 2 ;Positve discrete bandgap
TEXT 1680 -160 Left 2 ;25 °C\nIn: 5 V, 10 kHz\nOut 1.01 V, 15 mA, 215 µVpp (-73 dB)
TEXT 1856 560 Left 2 ;25 °C\nIn: 5 V, 10 kHz\nOut 1.04 V, 15 mA, 27.3 µVpp (-91 dB)