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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 "Tardigrade"
Date "2020-11-12"
Rev "1.1"
Comp "Lucerne University of Applied Sciences and Arts"
Comment1 "Author: Diego Bienz"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Battery_Management:MCP73831-2-OT U1
U 1 1 5F69201F
P 2450 1850
F 0 "U1" H 2450 2331 50 0000 C CNN
F 1 "MCP73831T-2ACI/OT" H 2450 2240 50 0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5" H 2500 1600 50 0001 L CIN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/20001984g.pdf" H 2300 1800 50 0001 C CNN
1 2450 1850
1 0 0 -1
$EndComp
$Comp
L power:VBUS #PWR02
U 1 1 5F694043
P 1400 1300
F 0 "#PWR02" H 1400 1150 50 0001 C CNN
F 1 "VBUS" H 1415 1473 50 0000 C CNN
F 2 "" H 1400 1300 50 0001 C CNN
F 3 "" H 1400 1300 50 0001 C CNN
1 1400 1300
1 0 0 -1
$EndComp
Wire Wire Line
1550 1550 1850 1550
$Comp
L power:GND #PWR03
U 1 1 5F694BB4
P 2450 2450
F 0 "#PWR03" H 2450 2200 50 0001 C CNN
F 1 "GND" H 2455 2277 50 0000 C CNN
F 2 "" H 2450 2450 50 0001 C CNN
F 3 "" H 2450 2450 50 0001 C CNN
1 2450 2450
1 0 0 -1
$EndComp
Wire Wire Line
2450 2150 2450 2250
$Comp
L Device:R R1
U 1 1 5F69536E
P 2150 2250
F 0 "R1" V 2250 2250 50 0000 C CNN
F 1 "5.1k" V 2034 2250 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 2080 2250 50 0001 C CNN
F 3 "~" H 2150 2250 50 0001 C CNN
1 2150 2250
0 1 1 0
$EndComp
Wire Wire Line
2050 1950 1950 1950
Wire Wire Line
1950 1950 1950 2250
Wire Wire Line
1950 2250 2000 2250
Wire Wire Line
2300 2250 2450 2250
Connection ~ 2450 2250
Wire Wire Line
2450 2250 2450 2400
$Comp
L Device:LED D2
U 1 1 5F6966EA
P 2950 2500
F 0 "D2" V 3050 2500 50 0000 L CNN
F 1 "LED" V 3050 2350 50 0000 L CNN
F 2 "LED_SMD:LED_0603_1608Metric" H 2950 2500 50 0001 C CNN
F 3 "~" H 2950 2500 50 0001 C CNN
1 2950 2500
0 1 1 0
$EndComp
$Comp
L Device:R R3
U 1 1 5F69A0CC
P 2950 2150
F 0 "R3" H 3050 2100 50 0000 C CNN
F 1 "1K" H 3050 2200 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 2880 2150 50 0001 C CNN
F 3 "~" H 2950 2150 50 0001 C CNN
1 2950 2150
-1 0 0 1
$EndComp
Text Notes 950 2450 0 50 ~ 0
R1:\n10K = 100mA\n5K = 200mA\n2K = 500mA\n1K = 1000mA
$Comp
L Connector_Generic:Conn_01x02 J2
U 1 1 5F6A3F68
P 4100 1100
F 0 "J2" V 4064 912 50 0000 R CNN
F 1 "Conn_01x02" V 3973 912 50 0000 R CNN
F 2 "Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal" H 4100 1100 50 0001 C CNN
F 3 "~" H 4100 1100 50 0001 C CNN
1 4100 1100
0 -1 -1 0
$EndComp
$Comp
L Device:C C3
U 1 1 5F6A5722
P 3600 2000
F 0 "C3" H 3715 2046 50 0000 L CNN
F 1 "10uF" H 3715 1955 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 3638 1850 50 0001 C CNN
F 3 "~" H 3600 2000 50 0001 C CNN
1 3600 2000
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR06
U 1 1 5F6A6075
P 3600 2500
F 0 "#PWR06" H 3600 2250 50 0001 C CNN
F 1 "GND" H 3605 2327 50 0000 C CNN
F 2 "" H 3600 2500 50 0001 C CNN
F 3 "" H 3600 2500 50 0001 C CNN
1 3600 2500
1 0 0 -1
$EndComp
Wire Wire Line
3600 2150 3600 2250
Wire Wire Line
3600 1850 3600 1750
$Comp
L power:GND #PWR07
U 1 1 5F6A694D
P 4400 1600
F 0 "#PWR07" H 4400 1350 50 0001 C CNN
F 1 "GND" H 4405 1427 50 0000 C CNN
F 2 "" H 4400 1600 50 0001 C CNN
F 3 "" H 4400 1600 50 0001 C CNN
1 4400 1600
1 0 0 -1
$EndComp
Wire Wire Line
4200 1300 4200 1350
Wire Wire Line
4200 1350 4400 1350
Wire Wire Line
4400 1350 4400 1600
$Comp
L Device:R R7
U 1 1 5F6A75D8
P 4100 2050
F 0 "R7" H 4170 2096 50 0000 L CNN
F 1 "0R" H 4170 2005 50 0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 4030 2050 50 0001 C CNN
F 3 "~" H 4100 2050 50 0001 C CNN
1 4100 2050
1 0 0 -1
$EndComp
$Comp
L Device:R R10
U 1 1 5F6A7C0B
P 4950 2050
F 0 "R10" H 5020 2141 50 0000 L CNN
F 1 "0R" H 5020 2050 50 0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 4880 2050 50 0001 C CNN
F 3 "~" H 4950 2050 50 0001 C CNN
F 4 "DNP" H 5020 1959 50 0000 L CIN "Field4"
1 4950 2050
1 0 0 -1
$EndComp
Text GLabel 5000 1250 2 50 BiDi ~ 0
EXT_VBAT
Wire Wire Line
5000 1250 4950 1250
Wire Wire Line
4950 1250 4950 1900
Wire Wire Line
4950 2200 4950 2300
Wire Wire Line
4950 2300 4500 2300
Wire Wire Line
4100 2300 4100 2200
Text Notes 3950 700 0 59 ~ 12
LIPO battery
Text Notes 5100 1100 0 59 ~ 12
Optional external Super-Caps
Connection ~ 4500 2300
Wire Wire Line
4500 2300 4100 2300
$Comp
L Connector_Generic:Conn_01x02 J1
U 1 1 5F6AE337
P 1550 5700
F 0 "J1" V 1550 5850 50 0000 R CNN
F 1 "Conn_01x02" V 1450 6200 50 0000 R CNN
F 2 "Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal" H 1550 5700 50 0001 C CNN
F 3 "~" H 1550 5700 50 0001 C CNN
1 1550 5700
0 1 1 0
$EndComp
$Comp
L tardigrade-components:TPS63031 U3
U 1 1 5F6C19C3
P 8700 3850
F 0 "U3" H 8700 4375 50 0000 C CNN
F 1 "TPS63031" H 8700 4284 50 0000 C CNN
F 2 "tardigrade-components:TPS63031DSKR" H 8700 4050 50 0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/tps63031.pdf?ts=1600756672780&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS63031" H 8700 4050 50 0001 C CNN
F 4 "Iq = 0.025 mA" H 8700 4450 50 0001 C CIN "Field4"
1 8700 3850
1 0 0 -1
$EndComp
$Comp
L Device:L L2
U 1 1 5F6C2483
P 8700 3150
F 0 "L2" V 8890 3150 50 0000 C CNN
F 1 "1.5uH" V 8799 3150 50 0000 C CNN
F 2 "Inductor_SMD:L_0402_1005Metric" H 8700 3150 50 0001 C CNN
F 3 "~" H 8700 3150 50 0001 C CNN
1 8700 3150
0 -1 -1 0
$EndComp
Wire Wire Line
8350 3550 8250 3550
Wire Wire Line
8250 3550 8250 3150
Wire Wire Line
8250 3150 8550 3150
Wire Wire Line
8850 3150 9150 3150
Wire Wire Line
9150 3150 9150 3550
Wire Wire Line
9150 3550 9050 3550
$Comp
L power:GND #PWR010
U 1 1 5F6C3E6F
P 7600 4300
F 0 "#PWR010" H 7600 4050 50 0001 C CNN
F 1 "GND" H 7605 4127 50 0000 C CNN
F 2 "" H 7600 4300 50 0001 C CNN
F 3 "" H 7600 4300 50 0001 C CNN
1 7600 4300
1 0 0 -1
$EndComp
Wire Wire Line
8350 4100 8250 4100
$Comp
L Device:C C9
U 1 1 5F6C49E9
P 7850 3950
F 0 "C9" H 7900 4050 50 0000 L CNN
F 1 "0.1uF" H 7850 3850 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 7888 3800 50 0001 C CNN
F 3 "~" H 7850 3950 50 0001 C CNN
1 7850 3950
1 0 0 -1
$EndComp
$Comp
L Device:C C8
U 1 1 5F6C704B
P 7600 3950
F 0 "C8" H 7500 4050 50 0000 L CNN
F 1 "10uF" H 7400 3850 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 7638 3800 50 0001 C CNN
F 3 "~" H 7600 3950 50 0001 C CNN
1 7600 3950
1 0 0 -1
$EndComp
Wire Wire Line
8250 4100 8250 4200
Wire Wire Line
8250 4200 7850 4200
Wire Wire Line
7600 4200 7600 4300
Wire Wire Line
7850 4100 7850 4200
Connection ~ 7850 4200
Wire Wire Line
7850 4200 7600 4200
Wire Wire Line
7600 4100 7600 4200
Connection ~ 7600 4200
Wire Wire Line
8350 3750 7850 3750
Wire Wire Line
8350 3650 7600 3650
Wire Wire Line
7600 3800 7600 3650
$Comp
L power:GND #PWR016
U 1 1 5F6CD275
P 9700 4250
F 0 "#PWR016" H 9700 4000 50 0001 C CNN
F 1 "GND" H 9705 4077 50 0000 C CNN
F 2 "" H 9700 4250 50 0001 C CNN
F 3 "" H 9700 4250 50 0001 C CNN
1 9700 4250
1 0 0 -1
$EndComp
Wire Wire Line
9050 4100 9150 4100
Wire Wire Line
9700 4100 9700 4250
Wire Wire Line
9050 4000 9150 4000
Wire Wire Line
9150 4000 9150 4100
Connection ~ 9150 4100
Wire Wire Line
9150 4100 9450 4100
$Comp
L power:+3.3V #PWR015
U 1 1 5F6D0265
P 9700 3300
F 0 "#PWR015" H 9700 3150 50 0001 C CNN
F 1 "+3.3V" H 9715 3473 50 0000 C CNN
F 2 "" H 9700 3300 50 0001 C CNN
F 3 "" H 9700 3300 50 0001 C CNN
1 9700 3300
1 0 0 -1
$EndComp
$Comp
L Device:C C11
U 1 1 5F6D09D1
P 9700 3800
F 0 "C11" H 9815 3846 50 0000 L CNN
F 1 "10uF" H 9815 3755 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 9738 3650 50 0001 C CNN
F 3 "~" H 9700 3800 50 0001 C CNN
1 9700 3800
1 0 0 -1
$EndComp
Wire Wire Line
9700 3950 9700 4100
Connection ~ 9700 4100
$Comp
L Device:C C10
U 1 1 5F6D299A
P 9450 3800
F 0 "C10" H 9250 3850 50 0000 L CNN
F 1 "10uF" H 9150 3750 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 9488 3650 50 0001 C CNN
F 3 "~" H 9450 3800 50 0001 C CNN
1 9450 3800
1 0 0 -1
$EndComp
Wire Wire Line
9050 3650 9100 3650
Wire Wire Line
9450 3650 9700 3650
Connection ~ 9450 3650
Connection ~ 9700 3650
Wire Wire Line
9050 3850 9100 3850
Wire Wire Line
9100 3850 9100 3650
Connection ~ 9100 3650
Wire Wire Line
9100 3650 9450 3650
Wire Wire Line
9450 3950 9450 4100
Connection ~ 9450 4100
Wire Wire Line
9450 4100 9700 4100
Wire Wire Line
2850 1750 3600 1750
Connection ~ 3600 1750
Text Notes 9800 3450 0 50 ~ 0
up to 800 mA
$Comp
L Battery_Management:BQ25504 U2
U 1 1 5F7F399D
P 4850 4350
F 0 "U2" V 5631 4350 50 0000 C CNN
F 1 "BQ25504" V 5540 4350 50 0000 C CNN
F 2 "tardigrade-components:QFN50P300X300X100-17N-D" H 4850 4350 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/bq25504.pdf" H 4550 5150 50 0001 C CNN
1 4850 4350
0 -1 -1 0
$EndComp
$Comp
L power:GND #PWR01
U 1 1 5F80C076
P 1200 5550
F 0 "#PWR01" H 1200 5300 50 0001 C CNN
F 1 "GND" H 1205 5377 50 0000 C CNN
F 2 "" H 1200 5550 50 0001 C CNN
F 3 "" H 1200 5550 50 0001 C CNN
1 1200 5550
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR09
U 1 1 5F80C7DD
P 5850 4750
F 0 "#PWR09" H 5850 4500 50 0001 C CNN
F 1 "GND" H 5855 4577 50 0000 C CNN
F 2 "" H 5850 4750 50 0001 C CNN
F 3 "" H 5850 4750 50 0001 C CNN
1 5850 4750
1 0 0 -1
$EndComp
Wire Wire Line
5650 4550 5850 4550
Wire Wire Line
5850 4550 5850 4750
Wire Wire Line
5650 4350 5850 4350
Wire Wire Line
5850 4350 5850 4550
Connection ~ 5850 4550
$Comp
L Device:L L1
U 1 1 5F812517
P 3800 4250
F 0 "L1" V 3990 4250 50 0000 C CNN
F 1 "22uH" V 3899 4250 50 0000 C CNN
F 2 "Inductor_SMD:L_0805_2012Metric" H 3800 4250 50 0001 C CNN
F 3 "~" H 3800 4250 50 0001 C CNN
1 3800 4250
0 -1 -1 0
$EndComp
Wire Wire Line
3950 4250 4050 4250
Wire Wire Line
3650 4250 3600 4250
Wire Wire Line
3600 4250 3600 4750
Connection ~ 3600 4750
Wire Wire Line
3600 4750 3950 4750
Wire Wire Line
5150 3750 5150 3650
Wire Wire Line
1450 5500 1450 5450
$Comp
L Device:C C2
U 1 1 5F82827F
P 3500 5150
F 0 "C2" H 3615 5196 50 0000 L CNN
F 1 "4.7uF" H 3615 5105 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 3538 5000 50 0001 C CNN
F 3 "~" H 3500 5150 50 0001 C CNN
1 3500 5150
1 0 0 -1
$EndComp
Wire Wire Line
4050 3950 4000 3950
$Comp
L Device:C C7
U 1 1 5F83D220
P 6000 3850
F 0 "C7" H 6000 3950 50 0000 L CNN
F 1 "4.7uF" H 6000 3750 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 6038 3700 50 0001 C CNN
F 3 "~" H 6000 3850 50 0001 C CNN
1 6000 3850
1 0 0 -1
$EndComp
$Comp
L Device:C C6
U 1 1 5F83DC33
P 5800 3850
F 0 "C6" H 5700 3950 50 0000 L CNN
F 1 "0.1uF" H 5800 3750 50 0000 R CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 5838 3700 50 0001 C CNN
F 3 "~" H 5800 3850 50 0001 C CNN
1 5800 3850
1 0 0 -1
$EndComp
Wire Wire Line
5800 3650 5800 3700
Wire Wire Line
6000 3650 6000 3700
Wire Wire Line
5800 4000 5800 4050
Wire Wire Line
5800 4050 6000 4050
Wire Wire Line
6000 4050 6000 4550
Wire Wire Line
6000 4550 5850 4550
Wire Wire Line
6000 4000 6000 4050
Connection ~ 6000 4050
Wire Wire Line
3950 4750 3950 4850
Connection ~ 3950 4750
Wire Wire Line
3950 4750 4050 4750
Wire Wire Line
4550 4950 4550 5200
Wire Wire Line
4550 5200 3950 5200
Wire Wire Line
3950 5200 3950 5150
$Comp
L Device:R R6
U 1 1 5F88246B
P 3950 5450
F 0 "R6" H 4020 5541 50 0000 L CNN
F 1 "6.04M" H 4020 5450 50 0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3880 5450 50 0001 C CNN
F 3 "~" H 3950 5450 50 0001 C CNN
F 4 "Roc1" H 4020 5359 50 0000 L CNN "Field4"
1 3950 5450
1 0 0 -1
$EndComp
Wire Wire Line
3950 5200 3950 5300
Connection ~ 3950 5200
$Comp
L Device:R R8
U 1 1 5F892C77
P 4650 6000
F 0 "R8" H 4950 5900 50 0000 R CNN
F 1 "5.49M" H 4950 6000 50 0000 R CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 4580 6000 50 0001 C CNN
F 3 "~" H 4650 6000 50 0001 C CNN
F 4 "Rov2" H 4950 6100 50 0000 R CNN "Field4"
1 4650 6000
-1 0 0 1
$EndComp
$Comp
L Device:R R9
U 1 1 5F8DDAA5
P 4650 6450
F 0 "R9" H 4950 6350 50 0000 R CNN
F 1 "4.53M" H 4950 6450 50 0000 R CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 4580 6450 50 0001 C CNN
F 3 "~" H 4650 6450 50 0001 C CNN
F 4 "Rov1" H 4950 6550 50 0000 R CNN "Field4"
1 4650 6450
-1 0 0 1
$EndComp
Wire Wire Line
4650 6150 4650 6200
Wire Wire Line
4750 4950 4750 6200
Wire Wire Line
4750 6200 4650 6200
Connection ~ 4650 6200
Wire Wire Line
4650 6200 4650 6300
$Comp
L Device:R R13
U 1 1 5F8EE9D3
P 6150 5850
F 0 "R13" V 6350 5850 50 0000 C CNN
F 1 "0.316M" V 6250 5850 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 6080 5850 50 0001 C CNN
F 3 "~" H 6150 5850 50 0001 C CNN
F 4 "Rok3" V 6050 5850 50 0000 C CNN "Field4"
1 6150 5850
0 1 1 0
$EndComp
Wire Wire Line
6300 5850 6400 5850
Wire Wire Line
6400 5850 6400 5700
$Comp
L Device:R R14
U 1 1 5F8FAF41
P 6650 5850
F 0 "R14" V 6450 5850 50 0000 C CNN
F 1 "5.62M" V 6550 5850 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 6580 5850 50 0001 C CNN
F 3 "~" H 6650 5850 50 0001 C CNN
F 4 "Rok2" V 6750 5850 50 0000 C CNN "Field4"
1 6650 5850
0 -1 -1 0
$EndComp
Wire Wire Line
6400 5850 6500 5850
Connection ~ 6400 5850
Wire Wire Line
6800 5850 6850 5850
Wire Wire Line
6850 5850 6850 5650
$Comp
L Device:R R15
U 1 1 5F908A8F
P 7050 5850
F 0 "R15" V 6850 5850 50 0000 C CNN
F 1 "4.02M" V 6950 5850 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 6980 5850 50 0001 C CNN
F 3 "~" H 7050 5850 50 0001 C CNN
F 4 "Rok1" V 7150 5850 50 0000 C CNN "Field4"
1 7050 5850
0 -1 -1 0
$EndComp
Wire Wire Line
6900 5850 6850 5850
Connection ~ 6850 5850
$Comp
L Device:R R11
U 1 1 5F92A982
P 5200 6000
F 0 "R11" H 5130 5909 50 0000 R CNN
F 1 "5.49M" H 5130 6000 50 0000 R CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 5130 6000 50 0001 C CNN
F 3 "~" H 5200 6000 50 0001 C CNN
F 4 "Ruv2" H 5130 6091 50 0000 R CNN "Field4"
1 5200 6000
-1 0 0 1
$EndComp
$Comp
L Device:R R12
U 1 1 5F938838
P 5200 6450
F 0 "R12" H 5130 6359 50 0000 R CNN
F 1 "4.42M" H 5130 6450 50 0000 R CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 5130 6450 50 0001 C CNN
F 3 "~" H 5200 6450 50 0001 C CNN
F 4 "Ruv1" H 5130 6541 50 0000 R CNN "Field4"
1 5200 6450
-1 0 0 1
$EndComp
Wire Wire Line
5200 6150 5200 6200
Wire Wire Line
4850 4950 4850 6200
Wire Wire Line
4850 6200 5200 6200
Connection ~ 5200 6200
Wire Wire Line
5200 6200 5200 6300
$Comp
L power:GND #PWR08
U 1 1 5F94F126
P 5550 5400
F 0 "#PWR08" H 5550 5150 50 0001 C CNN
F 1 "GND" H 5555 5227 50 0000 C CNN
F 2 "" H 5550 5400 50 0001 C CNN
F 3 "" H 5550 5400 50 0001 C CNN
1 5550 5400
1 0 0 -1
$EndComp
Wire Wire Line
5150 5000 5150 4950
$Comp
L Device:C C5
U 1 1 5F94EA99
P 5150 5150
F 0 "C5" H 5265 5196 50 0000 L CNN
F 1 "0.01uF" H 5265 5105 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 5188 5000 50 0001 C CNN
F 3 "~" H 5150 5150 50 0001 C CNN
1 5150 5150
1 0 0 -1
$EndComp
Wire Wire Line
4950 5700 4950 4950
Wire Wire Line
6400 5700 4950 5700
Wire Wire Line
6850 5650 5050 5650
Wire Wire Line
5050 5650 5050 4950
Wire Wire Line
5250 4950 5250 5000
Wire Wire Line
5250 5000 5550 5000
Wire Wire Line
5550 5000 5550 5350
Wire Wire Line
5150 5300 5150 5350
Wire Wire Line
5150 5350 5550 5350
Connection ~ 5550 5350
Wire Wire Line
5550 5350 5550 5400
Wire Wire Line
4650 4950 4650 5750
Connection ~ 4650 5750
Wire Wire Line
4650 5750 4650 5850
Wire Wire Line
5950 5750 5950 5850
Wire Wire Line
4650 5750 5200 5750
Wire Wire Line
5950 5850 6000 5850
Wire Wire Line
5200 5750 5200 5850
Connection ~ 5200 5750
Wire Wire Line
5200 5750 5950 5750
$Comp
L Device:R R5
U 1 1 5F878535
P 3950 5000
F 0 "R5" H 4020 5091 50 0000 L CNN
F 1 "4.02M" H 4020 5000 50 0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3880 5000 50 0001 C CNN
F 3 "~" H 3950 5000 50 0001 C CNN
F 4 "Roc2" H 4020 4909 50 0000 L CNN "Field4"
1 3950 5000
1 0 0 -1
$EndComp
Text Notes 1650 4950 0 50 ~ 0
Recommended: Vin: 0.13 V to 3 V, Iin: 300mA\nMaximum Rating: Vin: -0.3 V to 5.5 V, 400 mW\n
Text Notes 8250 4700 0 50 ~ 0
Check TPS63900 when available:\nhttps://www.ti.com/product/TPS63900
Text Notes 2150 1200 0 59 ~ 12
LIPO Charger
Text Notes 1250 5950 0 59 ~ 12
Solar-Panel
Text Notes 4250 3400 0 59 ~ 12
Solar Panel Boost Converter
Text Notes 8150 2800 0 59 ~ 12
Buck-Boost Converter for 3.3 V
Text GLabel 4500 3650 0 50 Output ~ 0
VBAT_OK
Wire Wire Line
4550 3750 4550 3650
Wire Wire Line
4550 3650 4500 3650
Wire Wire Line
1450 5450 1200 5450
Wire Wire Line
1200 5450 1200 5550
$Comp
L power:GND #PWR04
U 1 1 5FDF1918
P 3500 5350
F 0 "#PWR04" H 3500 5100 50 0001 C CNN
F 1 "GND" H 3505 5177 50 0000 C CNN
F 2 "" H 3500 5350 50 0001 C CNN
F 3 "" H 3500 5350 50 0001 C CNN
1 3500 5350
1 0 0 -1
$EndComp
Text Notes 5600 6850 0 50 ~ 0
Settings for BQ25504:\n\nVBAT_OV: 4.093 V\nVBAT_UV: 2.803 V\nVBAT_OK: 2.998 V\nVBAT_OK_HYST: 3.096 V\nVREF_SAMP: 0.8 V
$Comp
L power:PWR_FLAG #FLG02
U 1 1 5FE1B77A
P 9250 1000
F 0 "#FLG02" H 9250 1075 50 0001 C CNN
F 1 "PWR_FLAG" H 9250 1173 50 0000 C CNN
F 2 "" H 9250 1000 50 0001 C CNN
F 3 "~" H 9250 1000 50 0001 C CNN
1 9250 1000
1 0 0 -1
$EndComp
$Comp
L power:PWR_FLAG #FLG03
U 1 1 5FE1BC40
P 9650 1000
F 0 "#FLG03" H 9650 1075 50 0001 C CNN
F 1 "PWR_FLAG" H 9650 1173 50 0000 C CNN
F 2 "" H 9650 1000 50 0001 C CNN
F 3 "~" H 9650 1000 50 0001 C CNN
1 9650 1000
1 0 0 -1
$EndComp
$Comp
L power:+3.3V #PWR013
U 1 1 5FE1D43D
P 9050 1200
F 0 "#PWR013" H 9050 1050 50 0001 C CNN
F 1 "+3.3V" H 9065 1373 50 0000 C CNN
F 2 "" H 9050 1200 50 0001 C CNN
F 3 "" H 9050 1200 50 0001 C CNN
1 9050 1200
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR014
U 1 1 5FE1E04F
P 9650 1150
F 0 "#PWR014" H 9650 900 50 0001 C CNN
F 1 "GND" H 9550 1150 50 0000 C CNN
F 2 "" H 9650 1150 50 0001 C CNN
F 3 "" H 9650 1150 50 0001 C CNN
1 9650 1150
1 0 0 -1
$EndComp
Wire Wire Line
9650 1000 9650 1150
Wire Wire Line
9050 1200 9050 1250
Wire Wire Line
9050 1250 9250 1250
Wire Wire Line
9250 1250 9250 1000
$Comp
L power:PWR_FLAG #FLG01
U 1 1 5FE46EB6
P 8850 1000
F 0 "#FLG01" H 8850 1075 50 0001 C CNN
F 1 "PWR_FLAG" H 8850 1173 50 0000 C CNN
F 2 "" H 8850 1000 50 0001 C CNN
F 3 "~" H 8850 1000 50 0001 C CNN
1 8850 1000
1 0 0 -1
$EndComp
$Comp
L power:VBUS #PWR012
U 1 1 5FE47800
P 8650 1200
F 0 "#PWR012" H 8650 1050 50 0001 C CNN
F 1 "VBUS" H 8665 1373 50 0000 C CNN
F 2 "" H 8650 1200 50 0001 C CNN
F 3 "" H 8650 1200 50 0001 C CNN
1 8650 1200
1 0 0 -1
$EndComp
Wire Wire Line
8650 1200 8650 1250
Wire Wire Line
8650 1250 8850 1250
Wire Wire Line
8850 1250 8850 1000
Text Notes 5350 2150 0 50 ~ 0
Either equip R2 for the use of a LIPO battery,\nor R3 for the use of an externally placed super-\ncapacitor.
Text Notes 8700 1250 0 50 ~ 0
5V
$Comp
L power:PWR_FLAG #FLG04
U 1 1 5F716321
P 10050 1000
F 0 "#FLG04" H 10050 1075 50 0001 C CNN
F 1 "PWR_FLAG" H 10050 1173 50 0000 C CNN
F 2 "" H 10050 1000 50 0001 C CNN
F 3 "~" H 10050 1000 50 0001 C CNN
1 10050 1000
1 0 0 -1
$EndComp
Text GLabel 10100 1200 2 50 Input ~ 0
VSOLAR
Wire Wire Line
10050 1000 10050 1200
Wire Wire Line
10050 1200 10100 1200
Wire Wire Line
3600 1750 4100 1750
Wire Wire Line
4500 2300 4500 2850
Wire Wire Line
2950 2300 2950 2350
Wire Wire Line
2850 1950 2950 1950
Wire Wire Line
2950 1950 2950 2000
Wire Wire Line
2950 2650 2950 2700
Wire Wire Line
1550 1550 1550 2700
$Comp
L Device:LED D3
U 1 1 5FA51676
P 3150 2500
F 0 "D3" V 3250 2500 50 0000 L CNN
F 1 "LED" V 3250 2350 50 0000 L CNN
F 2 "LED_SMD:LED_0603_1608Metric" H 3150 2500 50 0001 C CNN
F 3 "~" H 3150 2500 50 0001 C CNN
1 3150 2500
0 -1 -1 0
$EndComp
$Comp
L Device:R R4
U 1 1 5FA6FDF8
P 3150 2150
F 0 "R4" H 3050 2100 50 0000 C CNN
F 1 "1K" H 3050 2200 50 0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3080 2150 50 0001 C CNN
F 3 "~" H 3150 2150 50 0001 C CNN
1 3150 2150
-1 0 0 1
$EndComp
Wire Wire Line
2950 1950 3150 1950
Wire Wire Line
3150 1950 3150 2000
Connection ~ 2950 1950
Wire Wire Line
3150 2300 3150 2350
Wire Wire Line
3150 2650 3150 2700
Wire Wire Line
3150 2700 3400 2700
Wire Wire Line
3400 2700 3400 2250
Wire Wire Line
3400 2250 3600 2250
Connection ~ 3600 2250
Wire Wire Line
3600 2250 3600 2500
Text GLabel 6150 4150 2 50 UnSpc ~ 0
BQ_AVSS
Wire Wire Line
5650 4150 6150 4150
Text GLabel 7300 5850 2 50 UnSpc ~ 0
BQ_AVSS
Text GLabel 5200 6700 3 50 UnSpc ~ 0
BQ_AVSS
Text GLabel 4650 6700 3 50 UnSpc ~ 0
BQ_AVSS
Wire Wire Line
4650 6600 4650 6700
Wire Wire Line
5200 6600 5200 6700
Wire Wire Line
7200 5850 7300 5850
Text GLabel 3950 5700 3 50 UnSpc ~ 0
BQ_AVSS
Wire Wire Line
3950 5600 3950 5700
Wire Wire Line
2200 3600 2200 4750
Wire Wire Line
2200 2700 2200 2950
Wire Wire Line
1550 2700 2200 2700
Connection ~ 2200 2700
Wire Wire Line
2200 2700 2950 2700
$Comp
L Device:R R2
U 1 1 5FA4E351
P 2200 3100
F 0 "R2" H 2270 3146 50 0000 L CNN
F 1 "150R" H 2270 3055 50 0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 2130 3100 50 0001 C CNN
F 3 "~" H 2200 3100 50 0001 C CNN
1 2200 3100
1 0 0 -1
$EndComp
$Comp
L Device:D_Zener D1
U 1 1 5FA540F4
P 2200 3450
F 0 "D1" V 2154 3529 50 0000 L CNN
F 1 "ca. 2.2V" V 2245 3529 50 0000 L CNN
F 2 "Diode_SMD:D_SOD-323" H 2200 3450 50 0001 C CNN
F 3 "~" H 2200 3450 50 0001 C CNN
1 2200 3450
0 1 1 0
$EndComp
Text Notes 950 3300 0 50 Italic 0
TODO:\nTry maximum R and go back\nfor 1 or 2 values
Text GLabel 8100 4450 3 50 Input ~ 0
VBAT_OK
Wire Wire Line
7850 3750 7850 3800
Wire Wire Line
4000 2850 4000 3950
Wire Wire Line
8350 3850 8100 3850
Wire Wire Line
8100 3850 8100 4450
Text GLabel 8250 1000 0 50 UnSpc ~ 0
BQ_AVSS
$Comp
L power:GND #PWR011
U 1 1 5FAE6D98
P 8350 1150
F 0 "#PWR011" H 8350 900 50 0001 C CNN
F 1 "GND" H 8250 1150 50 0000 C CNN
F 2 "" H 8350 1150 50 0001 C CNN
F 3 "" H 8350 1150 50 0001 C CNN
1 8350 1150
1 0 0 -1
$EndComp
Wire Wire Line
8250 1000 8350 1000
Wire Wire Line
8350 1000 8350 1150
$Comp
L Device:C C1
U 1 1 5FB925AE
P 1850 1800
F 0 "C1" H 1650 1900 50 0000 L CNN
F 1 "10uF" H 1650 1700 50 0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 1888 1650 50 0001 C CNN
F 3 "~" H 1850 1800 50 0001 C CNN
1 1850 1800
1 0 0 -1
$EndComp
Wire Wire Line
1400 1550 1400 1300
Connection ~ 1550 1550
$Comp
L Device:C C4
U 1 1 5FBCD12D
P 3850 1350
F 0 "C4" H 3965 1396 50 0000 L CNN
F 1 "150uF" H 3965 1305 50 0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 3888 1200 50 0001 C CNN
F 3 "~" H 3850 1350 50 0001 C CNN
1 3850 1350
0 -1 -1 0
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5FBCD7A2
P 3600 1400
F 0 "#PWR05" H 3600 1150 50 0001 C CNN
F 1 "GND" H 3605 1227 50 0000 C CNN
F 2 "" H 3600 1400 50 0001 C CNN
F 3 "" H 3600 1400 50 0001 C CNN
1 3600 1400
1 0 0 -1
$EndComp
Connection ~ 4100 1750
Wire Wire Line
4100 1750 4100 1900
Wire Wire Line
2200 3250 2200 3300
Wire Wire Line
4100 1300 4100 1350
Wire Wire Line
3600 1400 3600 1350
Wire Wire Line
3600 1350 3700 1350
Wire Wire Line
4000 1350 4100 1350
Connection ~ 4100 1350
Wire Wire Line
4100 1350 4100 1750
Wire Wire Line
9700 3300 9700 3650
Wire Wire Line
3500 5350 3500 5300
Wire Wire Line
3500 5000 3500 4750
Connection ~ 3500 4750
Wire Wire Line
3500 4750 3600 4750
Wire Wire Line
4500 2850 7100 2850
Wire Wire Line
7100 2850 7100 3650
Connection ~ 4500 2850
Connection ~ 7600 3650
Wire Wire Line
5150 3650 5800 3650
Wire Wire Line
5800 3650 6000 3650
Connection ~ 5800 3650
Wire Wire Line
8350 3950 8250 3950
Wire Wire Line
8250 3950 8250 4100
Connection ~ 8250 4100
Wire Wire Line
7100 3650 7600 3650
Wire Wire Line
1400 1550 1550 1550
Wire Wire Line
1850 1950 1850 2400
Wire Wire Line
1850 2400 2450 2400
Connection ~ 2450 2400
Wire Wire Line
2450 2400 2450 2450
Wire Wire Line
1850 1650 1850 1550
Connection ~ 1850 1550
Wire Wire Line
1850 1550 2450 1550
Wire Wire Line
4000 2850 4500 2850
Wire Wire Line
2200 4750 3500 4750
Connection ~ 2200 4750
Text GLabel 1450 4950 0 50 Input ~ 0
EXT_VIN
Wire Wire Line
1550 4750 1550 4950
Wire Wire Line
1550 5100 1550 5500
Connection ~ 1550 5100
Wire Wire Line
1450 5100 1550 5100
Text GLabel 1450 5100 0 50 Input ~ 0
VSOLAR
Wire Wire Line
1550 4750 2200 4750
Wire Wire Line
1450 4950 1550 4950
Connection ~ 1550 4950
Wire Wire Line
1550 4950 1550 5100
$EndSCHEMATC