microbit-classroom-sensor/power.sch

EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:lts
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 2 2
Title "Power Supply"
Date "2018-02-06"
Rev "AA"
Comp "Let's Talk Science"
Comment1 "Shawn Nock <shawn@monadnock.ca>"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L AP3012 U?
U 1 1 5A79E0C7
P 7350 4850
F 0 "U?" H 7550 5050 60  0000 C CNN
F 1 "AP3012" H 7350 4650 60  0000 C CNN
F 2 "" H 7250 4800 60  0001 C CNN
F 3 "" H 7250 4800 60  0001 C CNN
	1    7350 4850
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A79E3D2
P 7150 5300
F 0 "#PWR?" H 7150 5050 50  0001 C CNN
F 1 "GND" H 7150 5150 50  0000 C CNN
F 2 "" H 7150 5300 50  0001 C CNN
F 3 "" H 7150 5300 50  0001 C CNN
	1    7150 5300
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 5A79E3E8
P 8050 4450
F 0 "#PWR?" H 8050 4300 50  0001 C CNN
F 1 "+3.3V" H 8050 4590 50  0000 C CNN
F 2 "" H 8050 4450 50  0001 C CNN
F 3 "" H 8050 4450 50  0001 C CNN
	1    8050 4450
	1    0    0    -1  
$EndComp
Text HLabel 8750 4950 2    60   Input ~ 0
n5V_SHDN
$Comp
L L L?
U 1 1 5A79E407
P 7300 4500
F 0 "L?" V 7250 4500 50  0000 C CNN
F 1 "10uH" V 7375 4500 50  0000 C CNN
F 2 "" H 7300 4500 50  0001 C CNN
F 3 "" H 7300 4500 50  0001 C CNN
	1    7300 4500
	0    -1   -1   0   
$EndComp
$Comp
L C C?
U 1 1 5A79E525
P 8050 5150
F 0 "C?" H 8075 5250 50  0000 L CNN
F 1 "1uF" H 8075 5050 50  0000 L CNN
F 2 "" H 8088 5000 50  0001 C CNN
F 3 "" H 8050 5150 50  0001 C CNN
	1    8050 5150
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A79E606
P 6250 4950
F 0 "C?" H 6275 5050 50  0000 L CNN
F 1 "1uF" H 6275 4850 50  0000 L CNN
F 2 "" H 6288 4800 50  0001 C CNN
F 3 "" H 6250 4950 50  0001 C CNN
	1    6250 4950
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 5A79E709
P 6600 4700
F 0 "R?" V 6680 4700 50  0000 C CNN
F 1 "30k" V 6600 4700 50  0000 C CNN
F 2 "" V 6530 4700 50  0001 C CNN
F 3 "" H 6600 4700 50  0001 C CNN
	1    6600 4700
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 5A79E796
P 6600 5150
F 0 "R?" V 6680 5150 50  0000 C CNN
F 1 "10k" V 6600 5150 50  0000 C CNN
F 2 "" V 6530 5150 50  0001 C CNN
F 3 "" H 6600 5150 50  0001 C CNN
	1    6600 5150
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR?
U 1 1 5A79EB81
P 6250 4500
F 0 "#PWR?" H 6250 4350 50  0001 C CNN
F 1 "+5V" H 6250 4640 50  0000 C CNN
F 2 "" H 6250 4500 50  0001 C CNN
F 3 "" H 6250 4500 50  0001 C CNN
	1    6250 4500
	1    0    0    -1  
$EndComp
$Comp
L D_Schottky D?
U 1 1 5A79ED7A
P 6750 4500
F 0 "D?" H 6750 4600 50  0000 C CNN
F 1 "1N5819" H 6750 4700 50  0000 C CNN
F 2 "" H 6750 4500 50  0001 C CNN
F 3 "" H 6750 4500 50  0001 C CNN
	1    6750 4500
	1    0    0    -1  
$EndComp
$Comp
L USB_B J?
U 1 1 5A79F6C3
P 1550 5350
F 0 "J?" H 1350 5800 50  0000 L CNN
F 1 "USB_B" H 1350 5700 50  0000 L CNN
F 2 "" H 1700 5300 50  0001 C CNN
F 3 "" H 1700 5300 50  0001 C CNN
	1    1550 5350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A79F8F4
P 1550 5850
F 0 "#PWR?" H 1550 5600 50  0001 C CNN
F 1 "GND" H 1550 5700 50  0000 C CNN
F 2 "" H 1550 5850 50  0001 C CNN
F 3 "" H 1550 5850 50  0001 C CNN
	1    1550 5850
	1    0    0    -1  
$EndComp
Text Notes 5950 4050 0    60   ~ 0
5V from Microbit's 3V3
$Comp
L TEST_1P J?
U 1 1 5A7B5211
P 4450 7350
F 0 "J?" H 4450 7620 50  0000 C CNN
F 1 "3V3" H 4450 7550 50  0000 C CNN
F 2 "" H 4650 7350 50  0001 C CNN
F 3 "" H 4650 7350 50  0001 C CNN
	1    4450 7350
	1    0    0    -1  
$EndComp
$Comp
L TEST_1P J?
U 1 1 5A7B5286
P 4700 7350
F 0 "J?" H 4700 7620 50  0000 C CNN
F 1 "BOOST" H 4700 7550 50  0000 C CNN
F 2 "" H 4900 7350 50  0001 C CNN
F 3 "" H 4900 7350 50  0001 C CNN
	1    4700 7350
	1    0    0    -1  
$EndComp
$Comp
L TEST_1P J?
U 1 1 5A7B533E
P 4950 7350
F 0 "J?" H 4950 7620 50  0000 C CNN
F 1 "GND" H 4950 7550 50  0000 C CNN
F 2 "" H 5150 7350 50  0001 C CNN
F 3 "" H 5150 7350 50  0001 C CNN
	1    4950 7350
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 5A7B5420
P 4450 7350
F 0 "#PWR?" H 4450 7200 50  0001 C CNN
F 1 "+3.3V" H 4450 7490 50  0000 C CNN
F 2 "" H 4450 7350 50  0001 C CNN
F 3 "" H 4450 7350 50  0001 C CNN
	1    4450 7350
	-1   0    0    1   
$EndComp
$Comp
L +5V #PWR?
U 1 1 5A7B5456
P 4700 7350
F 0 "#PWR?" H 4700 7200 50  0001 C CNN
F 1 "+5V" H 4700 7490 50  0000 C CNN
F 2 "" H 4700 7350 50  0001 C CNN
F 3 "" H 4700 7350 50  0001 C CNN
	1    4700 7350
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR?
U 1 1 5A7B54E4
P 4950 7350
F 0 "#PWR?" H 4950 7100 50  0001 C CNN
F 1 "GND" H 4950 7200 50  0000 C CNN
F 2 "" H 4950 7350 50  0001 C CNN
F 3 "" H 4950 7350 50  0001 C CNN
	1    4950 7350
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A7B5A26
P 9150 3450
F 0 "C?" H 9175 3550 50  0000 L CNN
F 1 "10uF" H 9175 3350 50  0000 L CNN
F 2 "" H 9188 3300 50  0001 C CNN
F 3 "" H 9150 3450 50  0001 C CNN
	1    9150 3450
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 5A7B5AF1
P 9150 3300
F 0 "#PWR?" H 9150 3150 50  0001 C CNN
F 1 "+3.3V" H 9150 3440 50  0000 C CNN
F 2 "" H 9150 3300 50  0001 C CNN
F 3 "" H 9150 3300 50  0001 C CNN
	1    9150 3300
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A7B5C22
P 9150 3600
F 0 "#PWR?" H 9150 3350 50  0001 C CNN
F 1 "GND" H 9150 3450 50  0000 C CNN
F 2 "" H 9150 3600 50  0001 C CNN
F 3 "" H 9150 3600 50  0001 C CNN
	1    9150 3600
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 5A7B627B
P 3450 4500
F 0 "#PWR?" H 3450 4350 50  0001 C CNN
F 1 "+3.3V" H 3450 4640 50  0000 C CNN
F 2 "" H 3450 4500 50  0001 C CNN
F 3 "" H 3450 4500 50  0001 C CNN
	1    3450 4500
	1    0    0    -1  
$EndComp
$Comp
L ESDR0502N U?
U 1 1 5A7B7CEA
P 2750 6000
F 0 "U?" H 3050 6200 60  0000 C CNN
F 1 "ESDR0502N" H 2900 5800 60  0000 C CNN
F 2 "" H 2750 6000 60  0001 C CNN
F 3 "" H 2750 6000 60  0001 C CNN
	1    2750 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	7450 4500 8050 4500
Wire Wire Line
	6900 4500 6900 4750
Wire Wire Line
	6900 4500 7150 4500
Connection ~ 6900 4500
Wire Wire Line
	6900 4950 6600 4950
Wire Wire Line
	6600 4500 6250 4500
Wire Wire Line
	6250 4500 6250 4800
Wire Wire Line
	6250 5100 6250 5300
Wire Wire Line
	6250 5300 8050 5300
Connection ~ 6600 5300
Wire Wire Line
	8050 4450 8050 5000
Wire Wire Line
	7800 4750 8050 4750
Connection ~ 8050 4750
Connection ~ 8050 4500
Wire Wire Line
	7800 4950 8750 4950
Wire Wire Line
	6600 4850 6600 5000
Connection ~ 6600 4950
Wire Wire Line
	6600 4550 6600 4500
Wire Wire Line
	6900 4850 6800 4850
Wire Wire Line
	6800 4850 6800 5300
Connection ~ 6800 5300
Wire Wire Line
	1550 5750 1550 5850
Wire Notes Line
	5950 5650 5950 4050
Wire Notes Line
	5950 4050 8500 4050
Wire Notes Line
	8500 4050 8500 5650
Wire Notes Line
	8500 5650 5950 5650
Wire Wire Line
	1450 5750 1550 5750
Wire Wire Line
	1850 5450 3750 5450
Wire Wire Line
	1850 5350 3750 5350
Wire Wire Line
	1850 5150 3050 5150
Wire Wire Line
	3050 5150 3050 4950
Wire Wire Line
	3050 4950 3750 4950
Wire Wire Line
	3600 4950 3600 4850
Wire Wire Line
	3600 4850 3750 4850
Connection ~ 3600 4950
Wire Wire Line
	2600 5650 2600 5150
Connection ~ 2600 5150
Wire Wire Line
	2700 5650 2700 5350
Connection ~ 2700 5350
Wire Wire Line
	2800 5650 2800 5450
Connection ~ 2800 5450
$Comp
L GND #PWR?
U 1 1 5A7B86D2
P 2250 6200
F 0 "#PWR?" H 2250 5950 50  0001 C CNN
F 1 "GND" H 2250 6050 50  0000 C CNN
F 2 "" H 2250 6200 50  0001 C CNN
F 3 "" H 2250 6200 50  0001 C CNN
	1    2250 6200
	1    0    0    -1  
$EndComp
$Comp
L VBUS #PWR?
U 1 1 5A7B871D
P 2100 5150
F 0 "#PWR?" H 2100 5000 50  0001 C CNN
F 1 "VBUS" H 2100 5300 50  0000 C CNN
F 2 "" H 2100 5150 50  0001 C CNN
F 3 "" H 2100 5150 50  0001 C CNN
	1    2100 5150
	1    0    0    -1  
$EndComp
Connection ~ 2100 5150
Text Notes 8800 3100 0    30   ~ 0
Bulk Capacitance if Micro:bit powered
$Comp
L TEST_1P J?
U 1 1 5A7B8D33
P 4200 7350
F 0 "J?" H 4200 7620 50  0000 C CNN
F 1 "5V" H 4200 7550 50  0000 C CNN
F 2 "" H 4400 7350 50  0001 C CNN
F 3 "" H 4400 7350 50  0001 C CNN
	1    4200 7350
	1    0    0    -1  
$EndComp
$Comp
L VBUS #PWR?
U 1 1 5A7B8D68
P 4200 7350
F 0 "#PWR?" H 4200 7200 50  0001 C CNN
F 1 "VBUS" H 4200 7500 50  0000 C CNN
F 2 "" H 4200 7350 50  0001 C CNN
F 3 "" H 4200 7350 50  0001 C CNN
	1    4200 7350
	-1   0    0    1   
$EndComp
$Comp
L R R?
U 1 1 5A7B8E8A
P 3600 5150
F 0 "R?" V 3680 5150 50  0000 C CNN
F 1 "1k" V 3600 5150 50  0000 C CNN
F 2 "" V 3530 5150 50  0001 C CNN
F 3 "" H 3600 5150 50  0001 C CNN
	1    3600 5150
	0    1    1    0   
$EndComp
Wire Wire Line
	3450 4500 3450 5150
Wire Wire Line
	3450 4750 3750 4750
$Comp
L VBUS #PWR?
U 1 1 5A7B8FFA
P 1750 7050
F 0 "#PWR?" H 1750 6900 50  0001 C CNN
F 1 "VBUS" H 1750 7200 50  0000 C CNN
F 2 "" H 1750 7050 50  0001 C CNN
F 3 "" H 1750 7050 50  0001 C CNN
	1    1750 7050
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A7B9034
P 1600 7250
F 0 "C?" H 1500 7350 50  0000 L CNN
F 1 "4.7uF" H 1350 7150 50  0000 L CNN
F 2 "" H 1638 7100 50  0001 C CNN
F 3 "" H 1600 7250 50  0001 C CNN
	1    1600 7250
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A7B90AB
P 1900 7250
F 0 "C?" H 1925 7350 50  0000 L CNN
F 1 "0.1uF" H 1925 7150 50  0000 L CNN
F 2 "" H 1938 7100 50  0001 C CNN
F 3 "" H 1900 7250 50  0001 C CNN
	1    1900 7250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A7B90EF
P 1750 7450
F 0 "#PWR?" H 1750 7200 50  0001 C CNN
F 1 "GND" H 1750 7300 50  0000 C CNN
F 2 "" H 1750 7450 50  0001 C CNN
F 3 "" H 1750 7450 50  0001 C CNN
	1    1750 7450
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 7100 1900 7100
Wire Wire Line
	1750 7100 1750 7050
Connection ~ 1750 7100
Wire Wire Line
	1750 7450 1750 7400
Wire Wire Line
	1600 7400 1900 7400
Connection ~ 1750 7400
Connection ~ 3700 4750
Connection ~ 3450 4750
$Comp
L C C?
U 1 1 5A7BA004
P 2500 7250
F 0 "C?" H 2400 7350 50  0000 L CNN
F 1 "4.7uF" H 2250 7150 50  0000 L CNN
F 2 "" H 2538 7100 50  0001 C CNN
F 3 "" H 2500 7250 50  0001 C CNN
	1    2500 7250
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 5A7BA00A
P 2800 7250
F 0 "C?" H 2825 7350 50  0000 L CNN
F 1 "0.1uF" H 2825 7150 50  0000 L CNN
F 2 "" H 2838 7100 50  0001 C CNN
F 3 "" H 2800 7250 50  0001 C CNN
	1    2800 7250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 5A7BA010
P 2650 7450
F 0 "#PWR?" H 2650 7200 50  0001 C CNN
F 1 "GND" H 2650 7300 50  0000 C CNN
F 2 "" H 2650 7450 50  0001 C CNN
F 3 "" H 2650 7450 50  0001 C CNN
	1    2650 7450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 7100 2800 7100
Wire Wire Line
	2650 7100 2650 7050
Connection ~ 2650 7100
Wire Wire Line
	2650 7450 2650 7400
Wire Wire Line
	2500 7400 2800 7400
Connection ~ 2650 7400
$Comp
L +3.3V #PWR?
U 1 1 5A7BA047
P 2650 7050
F 0 "#PWR?" H 2650 6900 50  0001 C CNN
F 1 "+3.3V" H 2650 7190 50  0000 C CNN
F 2 "" H 2650 7050 50  0001 C CNN
F 3 "" H 2650 7050 50  0001 C CNN
	1    2650 7050
	1    0    0    -1  
$EndComp
$Comp
L CP2102N U?
U 1 1 5A7B76CE
P 4500 5450
F 0 "U?" H 4500 6250 60  0000 C CNN
F 1 "CP2102N" H 4950 4600 60  0000 C CNN
F 2 "" H 4500 5450 60  0001 C CNN
F 3 "" H 4500 5450 60  0001 C CNN
	1    4500 5450
	1    0    0    -1  
$EndComp
$EndSCHEMATC