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Simon's and Max' camera steering hardware for the Raspberry Pi.
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SaMcam_hw/SaMcam_shield/power_supplies_5v_3v3.sch

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 6
Title ""
Date "2022-01-17"
Rev "V0.9.0"
Comp "stiefel.tech"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 5800 3350
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Connection ~ 5300 3350
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Text Label 6450 2500 2 50 ~ 0
EN_5V
Text Label 9950 3450 2 50 ~ 0
EN_5V
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Connection ~ 7950 2200
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Text Notes 4000 4300 0 50 ~ 0
Vout = 0.6 V * (1+R1/R2) = 0.6 V * (1 + 110k Ω / 15kΩ) = 5 V
Text Notes 4000 4450 0 50 ~ 0
L = ( (Vin - Vout) * Vout ) / (ΔI * f * Vin) = ( (12 V - 5 V) * 5 V ) / (1.3 A * 500 kHz * 12 V) ≈ 4.49 μH
Text Notes 2600 3800 0 50 ~ 0
0.88 mA @ 2 V
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$Comp
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Wire Wire Line
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Wire Wire Line
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Connection ~ 4100 5250
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Connection ~ 3600 5250
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Wire Wire Line
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Connection ~ 3100 5250
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Wire Wire Line
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Connection ~ 2600 5250
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Wire Wire Line
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Connection ~ 3600 5650
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Wire Wire Line
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$Comp
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AR Path="/60A88316/6193ED96" Ref="C?" Part="1"
AR Path="/60C6E8D2/6193ED96" Ref="C23" Part="1"
F 0 "C23" H 8809 5404 50 0000 R CNN
F 1 "100 nF" H 8809 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 8900 5450 50 0001 C CNN
F 3 "~" H 8900 5450 50 0001 C CNN
F 4 "1276-1043-2-ND" H 8900 5450 50 0001 C CNN "Digikey"
1 8900 5450
-1 0 0 1
$EndComp
$Comp
L Device:C_Small C?
U 1 1 6193ED9D
P 8400 5450
AR Path="/60355F25/6193ED9D" Ref="C?" Part="1"
AR Path="/60A88316/6193ED9D" Ref="C?" Part="1"
AR Path="/60C6E8D2/6193ED9D" Ref="C21" Part="1"
F 0 "C21" H 8309 5404 50 0000 R CNN
F 1 "4.7 uF" H 8309 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 8400 5450 50 0001 C CNN
F 3 "~" H 8400 5450 50 0001 C CNN
F 4 "1276-1904-2-ND" H 8400 5450 50 0001 C CNN "Digikey"
1 8400 5450
-1 0 0 1
$EndComp
$Comp
L Connector:TestPoint_Probe TP?
U 1 1 6193EDA3
P 7900 5250
AR Path="/60355F25/6193EDA3" Ref="TP?" Part="1"
AR Path="/60A88316/6193EDA3" Ref="TP?" Part="1"
AR Path="/60C6E8D2/6193EDA3" Ref="TP4" Part="1"
F 0 "TP4" H 7950 5450 50 0000 L CNN
F 1 "TestPoint_Probe" H 8053 5260 50 0001 L CNN
F 2 "TestPoint:TestPoint_Pad_D1.0mm" H 8100 5250 50 0001 C CNN
F 3 "~" H 8100 5250 50 0001 C CNN
1 7900 5250
-1 0 0 -1
$EndComp
$Comp
L Device:C_Small C?
U 1 1 6193EDB1
P 7900 5450
AR Path="/60355F25/6193EDB1" Ref="C?" Part="1"
AR Path="/60A88316/6193EDB1" Ref="C?" Part="1"
AR Path="/60C6E8D2/6193EDB1" Ref="C19" Part="1"
F 0 "C19" H 7809 5404 50 0000 R CNN
F 1 "4.7 uF" H 7809 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 7900 5450 50 0001 C CNN
F 3 "~" H 7900 5450 50 0001 C CNN
F 4 "1276-1904-2-ND" H 7900 5450 50 0001 C CNN "Digikey"
1 7900 5450
-1 0 0 1
$EndComp
$Comp
L Device:C_Small C?
U 1 1 6193EDB8
P 9400 5450
AR Path="/60355F25/6193EDB8" Ref="C?" Part="1"
AR Path="/60A88316/6193EDB8" Ref="C?" Part="1"
AR Path="/60C6E8D2/6193EDB8" Ref="C25" Part="1"
F 0 "C25" H 9309 5404 50 0000 R CNN
F 1 "100 nF" H 9309 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 9400 5450 50 0001 C CNN
F 3 "~" H 9400 5450 50 0001 C CNN
F 4 "1276-1043-2-ND" H 9400 5450 50 0001 C CNN "Digikey"
1 9400 5450
-1 0 0 1
$EndComp
Wire Wire Line
7400 5250 6050 5250
Wire Wire Line
4300 3300 4300 3350
Connection ~ 4300 3350
Wire Wire Line
8950 2150 8950 2200
Connection ~ 8950 2200
Text Notes 4000 4600 0 50 ~ 0
Irms, max = 3.5 A
Text Notes 5000 6150 0 50 ~ 0
Imax = 500 mA
Text Notes 2450 6500 0 50 ~ 0
1 mA @ 2 V
Wire Wire Line
2100 6300 2100 6350
$Comp
L power:GND #PWR019
U 1 1 61991575
P 2100 6850
F 0 "#PWR019" H 2100 6600 50 0001 C CNN
F 1 "GND" H 2105 6677 50 0000 C CNN
F 2 "" H 2100 6850 50 0001 C CNN
F 3 "" H 2100 6850 50 0001 C CNN
1 2100 6850
1 0 0 -1
$EndComp
$Comp
L Device:LED_Small D?
U 1 1 61991582
P 2100 6450
AR Path="/60355F25/61991582" Ref="D?" Part="1"
AR Path="/60A88316/61991582" Ref="D?" Part="1"
AR Path="/60C6E8D2/61991582" Ref="D2" Part="1"
F 0 "D2" V 2146 6380 50 0000 R CNN
F 1 "Green" V 2055 6380 50 0000 R CNN
F 2 "LED_SMD:LED_0603_1608Metric" V 2100 6450 50 0001 C CNN
F 3 "~" V 2100 6450 50 0001 C CNN
F 4 "732-4980-1-ND" V 2100 6450 50 0001 C CNN "Digikey"
1 2100 6450
0 -1 -1 0
$EndComp
$Comp
L power:+3V3 #PWR018
U 1 1 61998001
P 2100 6300
F 0 "#PWR018" H 2100 6150 50 0001 C CNN
F 1 "+3V3" H 2115 6473 50 0000 C CNN
F 2 "" H 2100 6300 50 0001 C CNN
F 3 "" H 2100 6300 50 0001 C CNN
1 2100 6300
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C?
U 1 1 619D188B
P 4100 5450
AR Path="/60355F25/619D188B" Ref="C?" Part="1"
AR Path="/60A88316/619D188B" Ref="C?" Part="1"
AR Path="/60C6E8D2/619D188B" Ref="C9" Part="1"
F 0 "C9" H 4009 5404 50 0000 R CNN
F 1 "4.7 uF" H 4009 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4100 5450 50 0001 C CNN
F 3 "~" H 4100 5450 50 0001 C CNN
F 4 "1276-1904-2-ND" H 4100 5450 50 0001 C CNN "Digikey"
1 4100 5450
1 0 0 1
$EndComp
$Comp
L Device:C_Small C?
U 1 1 619D20FC
P 7400 5450
AR Path="/60355F25/619D20FC" Ref="C?" Part="1"
AR Path="/60A88316/619D20FC" Ref="C?" Part="1"
AR Path="/60C6E8D2/619D20FC" Ref="C17" Part="1"
F 0 "C17" H 7309 5404 50 0000 R CNN
F 1 "4.7 uF" H 7309 5495 50 0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 7400 5450 50 0001 C CNN
F 3 "~" H 7400 5450 50 0001 C CNN
F 4 "1276-1904-2-ND" H 7400 5450 50 0001 C CNN "Digikey"
1 7400 5450
-1 0 0 1
$EndComp
Text HLabel 10250 3450 2 50 Input ~ 0
EN_5V
Wire Wire Line
9600 3450 10250 3450
$Comp
L SaMcam:RT7295CGJ6F_buck U2
U 1 1 619A24CD
P 5750 2450
F 0 "U2" H 5725 2925 50 0000 C CNN
F 1 "RT7295CGJ6F_buck" H 5725 2834 50 0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23-6" H 5350 1950 50 0001 L CNN
F 3 "https://www.richtek.com/assets/product_file/RT7295C/DS7295C-08.pdf" H 5350 1200 50 0001 L CNN
F 4 "RT7295CGJ6FCT-ND" H 5350 2050 50 0001 L CNN "Digikey"
1 5750 2450
1 0 0 -1
$EndComp
Wire Wire Line
6200 2500 6450 2500
Wire Wire Line
6950 2200 6700 2200
Wire Wire Line
6200 2200 6350 2200
Wire Wire Line
6200 2350 6600 2350
$Comp
L power:GND #PWR025
U 1 1 61A577C4
P 5000 2350
F 0 "#PWR025" H 5000 2100 50 0001 C CNN
F 1 "GND" H 5005 2177 50 0000 C CNN
F 2 "" H 5000 2350 50 0001 C CNN
F 3 "" H 5000 2350 50 0001 C CNN
1 5000 2350
1 0 0 -1
$EndComp
Wire Wire Line
5000 2350 5250 2350
$Comp
L Device:C_Small C?
U 1 1 61A5E5DB
P 5700 1800
AR Path="/60355F25/61A5E5DB" Ref="C?" Part="1"
AR Path="/60A88316/61A5E5DB" Ref="C?" Part="1"
AR Path="/60C6E8D2/61A5E5DB" Ref="C13" Part="1"
F 0 "C13" H 5609 1754 50 0000 R CNN
F 1 "100 nF" H 5609 1845 50 0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 5700 1800 50 0001 C CNN
F 3 "~" H 5700 1800 50 0001 C CNN
F 4 "1276-1043-2-ND" H 5700 1800 50 0001 C CNN "Digikey"
1 5700 1800
0 1 1 0
$EndComp
Wire Wire Line
6350 2200 6350 1800
Wire Wire Line
6350 1800 5800 1800
Connection ~ 6350 2200
Wire Wire Line
6350 2200 6500 2200
Wire Wire Line
5250 2200 5250 1800
Wire Wire Line
5250 1800 5600 1800
$Comp
L Device:R_Small R11
U 1 1 61A9FFFF
P 5400 2850
F 0 "R11" V 5204 2850 50 0000 C CNN
F 1 "15 k" V 5295 2850 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5400 2850 50 0001 C CNN
F 3 "~" H 5400 2850 50 0001 C CNN
F 4 "CR0402-FX-1502GLFCT-ND" H 5400 2850 50 0001 C CNN "Digikey"
1 5400 2850
0 1 -1 0
$EndComp
Wire Wire Line
5250 2500 5150 2500
Wire Wire Line
5150 2500 5150 2550
Wire Wire Line
5150 2850 5000 2850
Wire Wire Line
5300 2850 5150 2850
Connection ~ 5150 2850
Wire Wire Line
6300 3350 6600 3350
Wire Wire Line
6600 2350 6600 3350
Connection ~ 6300 3350
$Comp
L power:GND #PWR026
U 1 1 61AC5DC3
P 5650 2900
F 0 "#PWR026" H 5650 2650 50 0001 C CNN
F 1 "GND" H 5655 2727 50 0000 C CNN
F 2 "" H 5650 2900 50 0001 C CNN
F 3 "" H 5650 2900 50 0001 C CNN
1 5650 2900
1 0 0 -1
$EndComp
Wire Wire Line
5650 2900 5650 2850
Wire Wire Line
5650 2850 5500 2850
Wire Wire Line
6950 1350 6950 2200
Wire Wire Line
4800 2850 4650 2850
Wire Wire Line
4650 2850 4650 1350
Wire Wire Line
4650 1350 6950 1350
$Comp
L Connector:TestPoint_Probe TP?
U 1 1 61AE9934
P 5150 2550
AR Path="/60355F25/61AE9934" Ref="TP?" Part="1"
AR Path="/60A88316/61AE9934" Ref="TP?" Part="1"
AR Path="/60C6E8D2/61AE9934" Ref="TP2" Part="1"
F 0 "TP2" H 5200 2750 50 0000 L CNN
F 1 "TestPoint_Probe" H 5303 2560 50 0001 L CNN
F 2 "TestPoint:TestPoint_Pad_D1.0mm" H 5350 2550 50 0001 C CNN
F 3 "~" H 5350 2550 50 0001 C CNN
1 5150 2550
1 0 0 1
$EndComp
Connection ~ 5150 2550
Wire Wire Line
5150 2550 5150 2850
$Comp
L Device:R_Small R?
U 1 1 61C5C501
P 9450 3650
AR Path="/60355F25/61C5C501" Ref="R?" Part="1"
AR Path="/60A88316/61C5C501" Ref="R?" Part="1"
AR Path="/61C5C501" Ref="R?" Part="1"
AR Path="/61A0DE56/61C5C501" Ref="R?" Part="1"
AR Path="/60C6E8D2/61C5C501" Ref="R12" Part="1"
F 0 "R12" V 9350 3650 50 0000 C CNN
F 1 "10.2 k" V 9550 3650 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 9450 3650 50 0001 C CNN
F 3 "~" H 9450 3650 50 0001 C CNN
F 4 "YAG5252CT-ND" V 9450 3650 50 0001 C CNN "Digikey"
1 9450 3650
1 0 0 -1
$EndComp
Wire Wire Line
9450 3450 9450 3550
$Comp
L power:GND #PWR033
U 1 1 61C69023
P 9450 3850
F 0 "#PWR033" H 9450 3600 50 0001 C CNN
F 1 "GND" H 9455 3677 50 0000 C CNN
F 2 "" H 9450 3850 50 0001 C CNN
F 3 "" H 9450 3850 50 0001 C CNN
1 9450 3850
-1 0 0 -1
$EndComp
Wire Wire Line
9450 3750 9450 3850
Text Notes 9450 3150 0 50 ~ 0
Ven, threshold, max = 1.39 V
$Comp
L power:PWR_FLAG #FLG04
U 1 1 61DA91AE
P 8450 2150
F 0 "#FLG04" H 8450 2225 50 0001 C CNN
F 1 "PWR_FLAG" H 8450 2323 50 0000 C CNN
F 2 "" H 8450 2150 50 0001 C CNN
F 3 "~" H 8450 2150 50 0001 C CNN
1 8450 2150
1 0 0 -1
$EndComp
Wire Wire Line
8450 2150 8450 2200
$Comp
L power:+3V3 #PWR030
U 1 1 61966B98
P 7400 5200
F 0 "#PWR030" H 7400 5050 50 0001 C CNN
F 1 "+3V3" H 7415 5373 50 0000 C CNN
F 2 "" H 7400 5200 50 0001 C CNN
F 3 "" H 7400 5200 50 0001 C CNN
1 7400 5200
1 0 0 -1
$EndComp
$Comp
L Device:R_Small R?
U 1 1 6217A19B
P 2100 6700
AR Path="/60355F25/6217A19B" Ref="R?" Part="1"
AR Path="/60A88316/6217A19B" Ref="R?" Part="1"
AR Path="/606B2804/6217A19B" Ref="R?" Part="1"
AR Path="/606B5506/6217A19B" Ref="R?" Part="1"
AR Path="/60C6E8D2/6217A19B" Ref="R8" Part="1"
F 0 "R8" V 2300 6700 50 0000 C CNN
F 1 "1.3 k" V 2200 6700 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 2100 6700 50 0001 C CNN
F 3 "~" H 2100 6700 50 0001 C CNN
F 4 "YAG3036CT-ND" V 2100 6700 50 0001 C CNN "Digikey"
1 2100 6700
-1 0 0 1
$EndComp
Wire Wire Line
2100 6550 2100 6600
Wire Wire Line
2100 6800 2100 6850
$EndSCHEMATC