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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L AL8805W5-7:AL8805W5-7 U1
U 1 1 5FB3F213
P 2700 2800
F 0 "U1" H 2850 2700 50  0000 C CNN
F 1 "AL8805W5-7" H 2850 2600 50  0000 C CNN
F 2 "AL8805W5-7:SOT95P280X130-5N" H 2700 2800 50  0001 L BNN
F 3 "" H 2700 2800 50  0001 L BNN
F 4 "AL8805W5-7" H 2700 2800 50  0001 L BNN "MPN"
F 5 "1904023" H 2700 2800 50  0001 L BNN "OC_FARNELL"
F 6 "55T1754" H 2700 2800 50  0001 L BNN "OC_NEWARK"
F 7 "DIODES INC." H 2700 2800 50  0001 L BNN "SUPPLIER"
F 8 "SOT-23-5" H 2700 2800 50  0001 L BNN "PACKAGE"
	1    2700 2800
	1    0    0    -1  
$EndComp
Text Notes 2900 1250 0    50   ~ 0
Analog Control LED Driver
$Comp
L power:GND #PWR0101
U 1 1 5FB43C29
P 2100 3650
F 0 "#PWR0101" H 2100 3400 50  0001 C CNN
F 1 "GND" V 2105 3522 50  0000 R CNN
F 2 "" H 2100 3650 50  0001 C CNN
F 3 "" H 2100 3650 50  0001 C CNN
	1    2100 3650
	0    1    1    0   
$EndComp
$Comp
L power:+12V #PWR0102
U 1 1 5FB443DA
P 3450 1700
F 0 "#PWR0102" H 3450 1550 50  0001 C CNN
F 1 "+12V" H 3465 1873 50  0000 C CNN
F 2 "" H 3450 1700 50  0001 C CNN
F 3 "" H 3450 1700 50  0001 C CNN
	1    3450 1700
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR0103
U 1 1 5FB44926
P 2050 1900
F 0 "#PWR0103" H 2050 1750 50  0001 C CNN
F 1 "+12V" H 2065 2073 50  0000 C CNN
F 2 "" H 2050 1900 50  0001 C CNN
F 3 "" H 2050 1900 50  0001 C CNN
	1    2050 1900
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT_TRIM RV1
U 1 1 5FB45B96
P 2050 2200
F 0 "RV1" V 1843 2200 50  0000 C CNN
F 1 "100KOhm" V 1934 2200 50  0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3296Y_Vertical" H 2050 2200 50  0001 C CNN
F 3 "~" H 2050 2200 50  0001 C CNN
	1    2050 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	2200 2200 2300 2200
Text Notes 2850 1350 0    50   ~ 0
0.3R = max current of 333 mA
$Comp
L Device:R R1
U 1 1 5FB42B17
P 3550 2400
F 0 "R1" V 3450 2400 50  0000 C CNN
F 1 "0.3R" V 3650 2400 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 3480 2400 50  0001 C CNN
F 3 "~" H 3550 2400 50  0001 C CNN
	1    3550 2400
	-1   0    0    1   
$EndComp
$Comp
L Device:C C1
U 1 1 5FB53D75
P 3450 2950
F 0 "C1" H 3565 2996 50  0000 L CNN
F 1 "1uF" H 3565 2905 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 3488 2800 50  0001 C CNN
F 3 "~" H 3450 2950 50  0001 C CNN
	1    3450 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	3400 2600 3450 2600
$Comp
L Device:L L1
U 1 1 5FB579E7
P 3450 3450
F 0 "L1" H 3503 3496 50  0000 L CNN
F 1 "33uH" H 3503 3405 50  0000 L CNN
F 2 "Inductor_SMD:L_Bourns_SRR1260" H 3450 3450 50  0001 C CNN
F 3 "~" H 3450 3450 50  0001 C CNN
	1    3450 3450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3450 3600 3450 3650
Wire Wire Line
	3450 3650 3400 3650
Wire Wire Line
	3450 2600 3450 2700
Wire Wire Line
	3450 2700 3900 2700
$Comp
L Connector_Generic:Conn_01x02 J1
U 1 1 5FB5EC11
P 4100 2900
F 0 "J1" H 4180 2892 50  0000 L CNN
F 1 "Conn_01x02" H 4180 2801 50  0000 L CNN
F 2 "Connector_JST:JST_PH_S4B-PH-K_1x04_P2.00mm_Horizontal" H 4100 2900 50  0001 C CNN
F 3 "~" H 4100 2900 50  0001 C CNN
	1    4100 2900
	1    0    0    -1  
$EndComp
Wire Wire Line
	3450 2700 3450 2800
Connection ~ 3450 2700
Wire Wire Line
	3450 3100 3450 3200
Wire Wire Line
	3450 3200 3900 3200
Connection ~ 3450 3200
Wire Wire Line
	3450 3200 3450 3300
Text Notes 4050 3150 0    50   ~ 0
LED -
Text Notes 4050 2800 0    50   ~ 0
LED +
Wire Wire Line
	3450 3650 4800 3650
Connection ~ 3450 3650
Wire Wire Line
	4800 3650 4800 3000
Wire Wire Line
	4800 2800 4800 2200
Wire Wire Line
	3450 2600 3550 2600
Wire Wire Line
	3550 2600 3550 2550
Connection ~ 3450 2600
Wire Wire Line
	3550 2200 3550 2250
Wire Wire Line
	3550 2200 4800 2200
$Comp
L Device:C C2
U 1 1 5FB6BD2F
P 4800 1950
F 0 "C2" H 4915 1996 50  0000 L CNN
F 1 "2.2uF" H 4915 1905 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 4838 1800 50  0001 C CNN
F 3 "~" H 4800 1950 50  0001 C CNN
	1    4800 1950
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 2200 4800 2100
Connection ~ 4800 2200
Wire Wire Line
	4800 1800 4800 1700
$Comp
L power:GND #PWR0104
U 1 1 5FB6D89A
P 4800 1700
F 0 "#PWR0104" H 4800 1450 50  0001 C CNN
F 1 "GND" H 4805 1527 50  0000 C CNN
F 2 "" H 4800 1700 50  0001 C CNN
F 3 "" H 4800 1700 50  0001 C CNN
	1    4800 1700
	-1   0    0    1   
$EndComp
Wire Wire Line
	2050 2050 2050 1900
Wire Wire Line
	2050 2350 2050 2500
$Comp
L power:GND #PWR0105
U 1 1 5FB72AD9
P 2050 2500
F 0 "#PWR0105" H 2050 2250 50  0001 C CNN
F 1 "GND" H 2055 2327 50  0000 C CNN
F 2 "" H 2050 2500 50  0001 C CNN
F 3 "" H 2050 2500 50  0001 C CNN
	1    2050 2500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 2700 3900 2900
Wire Wire Line
	3900 3200 3900 3000
$Comp
L Connector:Barrel_Jack J3
U 1 1 5FB7F0B4
P 7750 4300
F 0 "J3" H 7807 4625 50  0000 C CNN
F 1 "Barrel_Jack" H 7807 4534 50  0000 C CNN
F 2 "Connector_BarrelJack:BarrelJack_Horizontal" H 7800 4260 50  0001 C CNN
F 3 "~" H 7800 4260 50  0001 C CNN
	1    7750 4300
	1    0    0    -1  
$EndComp
Wire Wire Line
	8050 4400 8550 4400
Wire Wire Line
	8050 4200 8550 4200
$Comp
L power:GND #PWR0106
U 1 1 5FB7FF39
P 8550 4400
F 0 "#PWR0106" H 8550 4150 50  0001 C CNN
F 1 "GND" V 8555 4272 50  0000 R CNN
F 2 "" H 8550 4400 50  0001 C CNN
F 3 "" H 8550 4400 50  0001 C CNN
	1    8550 4400
	0    -1   -1   0   
$EndComp
$Comp
L power:+12V #PWR0107
U 1 1 5FB803EA
P 8550 4200
F 0 "#PWR0107" H 8550 4050 50  0001 C CNN
F 1 "+12V" V 8565 4328 50  0000 L CNN
F 2 "" H 8550 4200 50  0001 C CNN
F 3 "" H 8550 4200 50  0001 C CNN
	1    8550 4200
	0    1    1    0   
$EndComp
$Comp
L Connector:Barrel_Jack J2
U 1 1 5FB80D0D
P 7700 3250
F 0 "J2" H 7757 3575 50  0000 C CNN
F 1 "Barrel_Jack" H 7757 3484 50  0000 C CNN
F 2 "Connector_BarrelJack:BarrelJack_Horizontal" H 7750 3210 50  0001 C CNN
F 3 "~" H 7750 3210 50  0001 C CNN
	1    7700 3250
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR0109
U 1 1 5FB85C4F
P 8400 3150
F 0 "#PWR0109" H 8400 3000 50  0001 C CNN
F 1 "+12V" V 8415 3278 50  0000 L CNN
F 2 "" H 8400 3150 50  0001 C CNN
F 3 "" H 8400 3150 50  0001 C CNN
	1    8400 3150
	0    1    1    0   
$EndComp
Text Notes 8200 3950 0    50   ~ 0
Daisy Chain Power
Text Notes 8200 2900 0    50   ~ 0
Board Power
Wire Wire Line
	3200 5500 3500 5500
Wire Wire Line
	3500 5500 3500 5550
$Comp
L Device:R R2
U 1 1 5FBDADF1
P 3500 5700
F 0 "R2" H 3570 5746 50  0000 L CNN
F 1 "8KOhm" H 3570 5655 50  0000 L CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 3430 5700 50  0001 C CNN
F 3 "~" H 3500 5700 50  0001 C CNN
	1    3500 5700
	1    0    0    -1  
$EndComp
Wire Wire Line
	4100 6400 3500 6400
Connection ~ 3500 5500
$Comp
L LM2941S:LM2941S U2
U 1 1 5FBD435C
P 2500 5800
F 0 "U2" H 2550 5950 50  0000 C CNN
F 1 "LM2941S" H 2550 5800 50  0000 C CNN
F 2 "LM2941S:VREG_TPS79625KTTR" H 2500 5800 50  0001 L BNN
F 3 "" H 2500 5800 50  0001 L BNN
	1    2500 5800
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 5200 2500 5100
Wire Wire Line
	2500 5200 1200 5200
Wire Wire Line
	1200 5200 1200 5650
Connection ~ 2500 5200
Connection ~ 2500 6400
$Comp
L Device:C C3
U 1 1 5FBE0110
P 1200 5800
F 0 "C3" H 1000 5850 50  0000 L CNN
F 1 "0.47uF" H 850 5750 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 1238 5650 50  0001 C CNN
F 3 "~" H 1200 5800 50  0001 C CNN
	1    1200 5800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1200 5950 1200 6400
$Comp
L Device:C C4
U 1 1 5FBE055B
P 4100 5800
F 0 "C4" H 4215 5846 50  0000 L CNN
F 1 "22uF" H 4215 5755 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 4138 5650 50  0001 C CNN
F 3 "~" H 4100 5800 50  0001 C CNN
	1    4100 5800
	1    0    0    -1  
$EndComp
Wire Wire Line
	4100 6400 4100 5950
$Comp
L power:+12V #PWR0110
U 1 1 5FBE5E13
P 2500 5100
F 0 "#PWR0110" H 2500 4950 50  0001 C CNN
F 1 "+12V" H 2515 5273 50  0000 C CNN
F 2 "" H 2500 5100 50  0001 C CNN
F 3 "" H 2500 5100 50  0001 C CNN
	1    2500 5100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0111
U 1 1 5FBE6F4D
P 2500 6600
F 0 "#PWR0111" H 2500 6350 50  0001 C CNN
F 1 "GND" H 2505 6427 50  0000 C CNN
F 2 "" H 2500 6600 50  0001 C CNN
F 3 "" H 2500 6600 50  0001 C CNN
	1    2500 6600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4900 5500 4900 5700
Wire Wire Line
	4900 6200 4900 6300
$Comp
L power:GND #PWR0112
U 1 1 5FBEAC28
P 4900 6300
F 0 "#PWR0112" H 4900 6050 50  0001 C CNN
F 1 "GND" H 4905 6127 50  0000 C CNN
F 2 "" H 4900 6300 50  0001 C CNN
F 3 "" H 4900 6300 50  0001 C CNN
	1    4900 6300
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT_TRIM RV2
U 1 1 5FBEDC0F
P 3500 6100
F 0 "RV2" H 3430 6146 50  0000 R CNN
F 1 "5kOhm1" H 3430 6055 50  0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3296Y_Vertical" H 3500 6100 50  0001 C CNN
F 3 "~" H 3500 6100 50  0001 C CNN
	1    3500 6100
	-1   0    0    -1  
$EndComp
Wire Wire Line
	3500 5850 3500 5950
Wire Wire Line
	3500 6250 3500 6400
Wire Wire Line
	3350 6100 3200 6100
Text Notes 2700 4800 0    50   ~ 0
Analog Control Fan
Connection ~ 4100 5500
Wire Wire Line
	4100 5500 4900 5500
Wire Wire Line
	3500 5500 4100 5500
Wire Wire Line
	4100 5500 4100 5650
$Comp
L MBRA140:MBRA140 D1
U 1 1 5FB42DFE
P 4800 2900
F 0 "D1" V 4846 2810 50  0000 R CNN
F 1 "MBRA140" V 4755 2810 50  0000 R CNN
F 2 "MBRA140:SMA-DIODE" H 4800 2900 50  0001 L BNN
F 3 "" H 4800 2900 50  0001 L BNN
F 4 "DIO-08053" H 4800 2900 50  0001 L BNN "PROD_ID"
	1    4800 2900
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8000 3150 8400 3150
Wire Wire Line
	2300 3650 2100 3650
Wire Wire Line
	3400 2200 3450 2200
Wire Wire Line
	3450 2200 3450 1700
Wire Wire Line
	3450 2200 3550 2200
Connection ~ 3450 2200
Connection ~ 3550 2200
Wire Wire Line
	2500 6600 2500 6400
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 5FB5E7D6
P 8400 3150
F 0 "#FLG0101" H 8400 3225 50  0001 C CNN
F 1 "PWR_FLAG" H 8400 3323 50  0000 C CNN
F 2 "" H 8400 3150 50  0001 C CNN
F 3 "~" H 8400 3150 50  0001 C CNN
	1    8400 3150
	1    0    0    -1  
$EndComp
Connection ~ 8400 3150
$Comp
L power:GND #PWR0108
U 1 1 5FB82346
P 8400 3350
F 0 "#PWR0108" H 8400 3100 50  0001 C CNN
F 1 "GND" V 8405 3222 50  0000 R CNN
F 2 "" H 8400 3350 50  0001 C CNN
F 3 "" H 8400 3350 50  0001 C CNN
	1    8400 3350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8000 3350 8400 3350
Wire Wire Line
	2500 6400 3500 6400
Connection ~ 3500 6400
Wire Wire Line
	1800 6400 2500 6400
Wire Wire Line
	1200 6400 1800 6400
Connection ~ 1800 6400
Wire Wire Line
	1800 6400 1800 5800
$Comp
L power:GND #PWR0113
U 1 1 5FB9E22B
P 9000 3250
F 0 "#PWR0113" H 9000 3000 50  0001 C CNN
F 1 "GND" H 9005 3077 50  0000 C CNN
F 2 "" H 9000 3250 50  0001 C CNN
F 3 "" H 9000 3250 50  0001 C CNN
	1    9000 3250
	1    0    0    -1  
$EndComp
$Comp
L power:PWR_FLAG #FLG0102
U 1 1 5FB9E855
P 9000 3250
F 0 "#FLG0102" H 9000 3325 50  0001 C CNN
F 1 "PWR_FLAG" H 9000 3423 50  0000 C CNN
F 2 "" H 9000 3250 50  0001 C CNN
F 3 "~" H 9000 3250 50  0001 C CNN
	1    9000 3250
	1    0    0    -1  
$EndComp
$Comp
L Motor:Fan_4pin M1
U 1 1 5FBC518A
P 4900 6000
F 0 "M1" H 5058 6096 50  0000 L CNN
F 1 "Fan_4pin" H 5058 6005 50  0000 L CNN
F 2 "Connector:FanPinHeader_1x04_P2.54mm_Vertical" H 4900 6010 50  0001 C CNN
F 3 "http://www.formfactors.org/developer%5Cspecs%5Crev1_2_public.pdf" H 4900 6010 50  0001 C CNN
	1    4900 6000
	1    0    0    -1  
$EndComp
NoConn ~ 4600 5900
NoConn ~ 4600 6100
Text Notes 2650 5300 0    50   ~ 0
LM2941S regulates output and allows for trim pot to control Fan speed without using PWM signal.
Text Notes 1900 3850 0    50   ~ 0
This LED driver is adapted from SparkFun femtobuck design.
Text Notes 1850 3950 0    50   ~ 0
 I’ve added a trim pot to control the driver. It should output constant 330 mA to LEDs.
$EndSCHEMATC