-
Notifications
You must be signed in to change notification settings - Fork 6
/
Copy pathkeyboard-power.sch
399 lines (399 loc) · 8.28 KB
/
keyboard-power.sch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:special
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:conn-x220-kb
LIBS:conn-palm-fold-kb
LIBS:ldo-mcp1700
LIBS:energymicro-efm32
LIBS:keyboard-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 5 7
Title ""
Date "22 mar 2015"
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L PWR_FLAG #FLG3
U 1 1 550CC647
P 6700 7450
F 0 "#FLG3" H 6700 7545 30 0001 C CNN
F 1 "PWR_FLAG" H 6700 7630 30 0000 C CNN
F 2 "" H 6700 7450 60 0000 C CNN
F 3 "" H 6700 7450 60 0000 C CNN
1 6700 7450
1 0 0 -1
$EndComp
$Comp
L PWR_FLAG #FLG2
U 1 1 550CC64D
P 6400 7450
F 0 "#FLG2" H 6400 7545 30 0001 C CNN
F 1 "PWR_FLAG" H 6400 7630 30 0000 C CNN
F 2 "" H 6400 7450 60 0000 C CNN
F 3 "" H 6400 7450 60 0000 C CNN
1 6400 7450
1 0 0 -1
$EndComp
$Comp
L PWR_FLAG #FLG1
U 1 1 550CC653
P 6100 7450
F 0 "#FLG1" H 6100 7545 30 0001 C CNN
F 1 "PWR_FLAG" H 6100 7630 30 0000 C CNN
F 2 "" H 6100 7450 60 0000 C CNN
F 3 "" H 6100 7450 60 0000 C CNN
1 6100 7450
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR27
U 1 1 550CC659
P 6400 7550
F 0 "#PWR27" H 6400 7510 30 0001 C CNN
F 1 "+3.3V" H 6400 7660 30 0000 C CNN
F 2 "" H 6400 7550 60 0000 C CNN
F 3 "" H 6400 7550 60 0000 C CNN
1 6400 7550
-1 0 0 1
$EndComp
$Comp
L +5V #PWR25
U 1 1 550CC65F
P 6100 7550
F 0 "#PWR25" H 6100 7640 20 0001 C CNN
F 1 "+5V" H 6100 7640 30 0000 C CNN
F 2 "" H 6100 7550 60 0000 C CNN
F 3 "" H 6100 7550 60 0000 C CNN
1 6100 7550
-1 0 0 1
$EndComp
$Comp
L GND #PWR30
U 1 1 550CC665
P 6700 7550
F 0 "#PWR30" H 6700 7550 30 0001 C CNN
F 1 "GND" H 6700 7480 30 0001 C CNN
F 2 "" H 6700 7550 60 0000 C CNN
F 3 "" H 6700 7550 60 0000 C CNN
1 6700 7550
1 0 0 -1
$EndComp
Wire Wire Line
6100 7450 6100 7550
Wire Wire Line
6400 7450 6400 7550
Wire Wire Line
6700 7450 6700 7550
$Comp
L MCP1700 U2
U 1 1 550CC8A8
P 4100 3850
F 0 "U2" H 3900 3650 40 0000 C CNN
F 1 "MCP1700-2202E/TT" H 3850 4050 40 0000 L CNN
F 2 "Housings_SOT-23_SOT-143_TSOT-6:SOT-23_Handsoldering" H 4100 3950 30 0000 C CIN
F 3 "" H 4100 3850 60 0000 C CNN
1 4100 3850
1 0 0 -1
$EndComp
$Comp
L GND #PWR21
U 1 1 550CC8B7
P 4100 4400
F 0 "#PWR21" H 4100 4400 30 0001 C CNN
F 1 "GND" H 4100 4330 30 0001 C CNN
F 2 "" H 4100 4400 60 0000 C CNN
F 3 "" H 4100 4400 60 0000 C CNN
1 4100 4400
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR22
U 1 1 550CC8C6
P 4600 3700
F 0 "#PWR22" H 4600 3660 30 0001 C CNN
F 1 "+3.3V" H 4600 3810 30 0000 C CNN
F 2 "" H 4600 3700 60 0000 C CNN
F 3 "" H 4600 3700 60 0000 C CNN
1 4600 3700
1 0 0 -1
$EndComp
$Comp
L GND #PWR23
U 1 1 550CC8E2
P 4600 4400
F 0 "#PWR23" H 4600 4400 30 0001 C CNN
F 1 "GND" H 4600 4330 30 0001 C CNN
F 2 "" H 4600 4400 60 0000 C CNN
F 3 "" H 4600 4400 60 0000 C CNN
1 4600 4400
1 0 0 -1
$EndComp
$Comp
L GND #PWR20
U 1 1 550CC8E8
P 3600 4400
F 0 "#PWR20" H 3600 4400 30 0001 C CNN
F 1 "GND" H 3600 4330 30 0001 C CNN
F 2 "" H 3600 4400 60 0000 C CNN
F 3 "" H 3600 4400 60 0000 C CNN
1 3600 4400
1 0 0 -1
$EndComp
$Comp
L C C1
U 1 1 550CC8F0
P 3600 4100
F 0 "C1" H 3600 4200 40 0000 L CNN
F 1 "1uF" H 3606 4015 40 0000 L CNN
F 2 "Capacitors_SMD:C_0805" H 3638 3950 30 0000 C CNN
F 3 "~" H 3600 4100 60 0000 C CNN
1 3600 4100
1 0 0 -1
$EndComp
$Comp
L C C2
U 1 1 550CC8FD
P 4600 4100
F 0 "C2" H 4600 4200 40 0000 L CNN
F 1 "1uF" H 4606 4015 40 0000 L CNN
F 2 "Capacitors_SMD:C_0805" H 4638 3950 30 0000 C CNN
F 3 "~" H 4600 4100 60 0000 C CNN
1 4600 4100
1 0 0 -1
$EndComp
Wire Wire Line
3500 3800 3700 3800
Connection ~ 3600 3800
Wire Wire Line
3600 4250 3600 4400
Wire Wire Line
4100 4100 4100 4400
Wire Wire Line
4600 4250 4600 4400
Wire Wire Line
4500 3800 4600 3800
Wire Wire Line
4600 3700 4600 3950
Connection ~ 4600 3800
$Comp
L +5V #PWR31
U 1 1 550CC97B
P 7000 2650
F 0 "#PWR31" H 7000 2740 20 0001 C CNN
F 1 "+5V" H 7000 2740 30 0000 C CNN
F 2 "" H 7000 2650 60 0000 C CNN
F 3 "" H 7000 2650 60 0000 C CNN
1 7000 2650
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR33
U 1 1 550CC981
P 7700 2650
F 0 "#PWR33" H 7700 2610 30 0001 C CNN
F 1 "+3.3V" H 7700 2760 30 0000 C CNN
F 2 "" H 7700 2650 60 0000 C CNN
F 3 "" H 7700 2650 60 0000 C CNN
1 7700 2650
1 0 0 -1
$EndComp
$Comp
L R R33
U 1 1 550CC989
P 7350 2750
F 0 "R33" V 7430 2750 40 0000 C CNN
F 1 "DNP" V 7357 2751 40 0000 C CNN
F 2 "Resistors_SMD:R_0805" V 7280 2750 30 0000 C CNN
F 3 "~" H 7350 2750 30 0000 C CNN
1 7350 2750
0 -1 -1 0
$EndComp
Wire Wire Line
7000 2650 7000 2750
Wire Wire Line
7000 2750 7200 2750
Wire Wire Line
7500 2750 7700 2750
Wire Wire Line
7700 2750 7700 2650
Wire Wire Line
3600 3800 3600 3950
Wire Wire Line
3550 2650 3650 2650
$Comp
L DIODE D1
U 1 1 550CCD11
P 3850 2650
F 0 "D1" H 3850 2750 40 0000 C CNN
F 1 "1N4148" H 3850 2550 40 0000 C CNN
F 2 "Diodes_SMD:Diode-DO-214BA" H 3850 2650 60 0000 C CNN
F 3 "~" H 3850 2650 60 0000 C CNN
1 3850 2650
1 0 0 -1
$EndComp
$Comp
L DIODE D2
U 1 1 550CCD1E
P 4350 2650
F 0 "D2" H 4350 2750 40 0000 C CNN
F 1 "1N4148" H 4350 2550 40 0000 C CNN
F 2 "Diodes_SMD:Diode-DO-214BA" H 4350 2650 60 0000 C CNN
F 3 "~" H 4350 2650 60 0000 C CNN
1 4350 2650
1 0 0 -1
$EndComp
Wire Wire Line
4050 2650 4150 2650
Wire Wire Line
4550 2650 4650 2650
Wire Wire Line
4650 2650 4650 2550
$Comp
L +5V #PWR32
U 1 1 550CCD71
P 7650 3750
F 0 "#PWR32" H 7650 3840 20 0001 C CNN
F 1 "+5V" H 7650 3840 30 0000 C CNN
F 2 "" H 7650 3750 60 0000 C CNN
F 3 "" H 7650 3750 60 0000 C CNN
1 7650 3750
1 0 0 -1
$EndComp
Wire Wire Line
6950 3850 7150 3850
Wire Wire Line
7450 3850 7650 3850
Wire Wire Line
7650 3850 7650 3750
$Comp
L R R32
U 1 1 550CCD88
P 7300 3850
F 0 "R32" V 7380 3850 40 0000 C CNN
F 1 "DNP" V 7307 3851 40 0000 C CNN
F 2 "Resistors_SMD:R_0805" V 7230 3850 30 0000 C CNN
F 3 "~" H 7300 3850 30 0000 C CNN
1 7300 3850
0 -1 -1 0
$EndComp
Text Notes 2450 2250 0 60 ~ 0
One option is just to use diode droppers to get from 5v to ~3.6V
Text Notes 2950 3450 0 60 ~ 0
The more official option is to use a LDO regulator
Text Notes 5900 2400 0 60 ~ 0
If it turns out that we can power the trackpoint from 3.3V, then we can just join the power rails
Text Notes 6300 3600 0 60 ~ 0
Otherwise, get the 5V from the USB
Text HLabel 3550 2650 0 60 Input ~ 0
VBUS
Text HLabel 6950 3850 0 60 Input ~ 0
VBUS
Text HLabel 3500 3800 0 60 Input ~ 0
VBUS
$Comp
L +3.3V #PWR24
U 1 1 5512FA81
P 4650 2550
F 0 "#PWR24" H 4650 2510 30 0001 C CNN
F 1 "+3.3V" H 4650 2660 30 0000 C CNN
F 2 "" H 4650 2550 60 0000 C CNN
F 3 "" H 4650 2550 60 0000 C CNN
1 4650 2550
1 0 0 -1
$EndComp
$Comp
L CONN_01X04 P6
U 1 1 551455B9
P 6950 4750
F 0 "P6" H 6950 5000 50 0000 C CNN
F 1 "Power" V 7050 4750 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x04" H 6950 4750 60 0001 C CNN
F 3 "" H 6950 4750 60 0000 C CNN
1 6950 4750
1 0 0 -1
$EndComp
$Comp
L GND #PWR29
U 1 1 55145640
P 6650 5000
F 0 "#PWR29" H 6650 5000 30 0001 C CNN
F 1 "GND" H 6650 4930 30 0001 C CNN
F 2 "" H 6650 5000 60 0000 C CNN
F 3 "" H 6650 5000 60 0000 C CNN
1 6650 5000
1 0 0 -1
$EndComp
$Comp
L +5V #PWR28
U 1 1 55145673
P 6650 4500
F 0 "#PWR28" H 6650 4590 20 0001 C CNN
F 1 "+5V" H 6650 4590 30 0000 C CNN
F 2 "" H 6650 4500 60 0000 C CNN
F 3 "" H 6650 4500 60 0000 C CNN
1 6650 4500
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR26
U 1 1 55145696
P 6350 4800
F 0 "#PWR26" H 6350 4760 30 0001 C CNN
F 1 "+3.3V" H 6350 4910 30 0000 C CNN
F 2 "" H 6350 4800 60 0000 C CNN
F 3 "" H 6350 4800 60 0000 C CNN
1 6350 4800
1 0 0 -1
$EndComp
Wire Wire Line
6750 4600 6650 4600
Wire Wire Line
6650 4600 6650 4500
Wire Wire Line
6350 4800 6350 4900
Wire Wire Line
6350 4900 6750 4900
Wire Wire Line
6750 4700 6650 4700
Wire Wire Line
6650 4700 6650 5000
Wire Wire Line
6750 4800 6650 4800
Connection ~ 6650 4800
$EndSCHEMATC