Te chnologic Sys t e ms
Da t e
Tit le :
Re v:
De s igne r
She e t
of
TS-7680 AUX Powe r Re g, Boot St ra p
20
B
Se pt . 1, 2015
7
Boot
3. 3V
ETM off
TEST off
Boot St ra p
Bia s Re s .
Source
LCD_3
LCD_0
0 0 1 0
1 0 0 1
SPI
SD Ca rd
0 0 0 0
USB
Aux. 3. 3V Re g
RC = 4 x e -6
St ra ppe d
SPI Boot
0 1 0 0
NAND
RAM 1. 8V Re g
RC = 4 x e -6
3. 31V t yp
1. 81V t yp
Se le ct Boot
Da ught e r Ca rd
Int e rfa ce
0. 4V = L
1. 5V = H
600 mV
3
VIN
1
GND
2
EN
4
SW
5
GND
6
FB
7
PAD
U6
REG_1A_RT8016_DFN6
L2
3. 3V
C64
10 uF
FB13
220 ohm
R172
9. 1K
R82
41. 2K
C31
100 pF
1
2
3
D6
DIODE_BAV99-2_SOT23
C66
10 uF
4
5
RN27-D
10K
3
6
RN27-C
10K
2
7
RN27-B
10K
1
8
RN27-A
10K
1
8
RN23-A
10K
2
7
RN23-B
10K
3
6
RN23-C
10K
4
5
RN23-D
10K
0. 4V = L
1. 5V = H
600 mV
3
VIN
1
GND
2
EN
4
SW
5
GND
6
FB
7
PAD
U5
REG_1A_RT8016_DFN6
L1
1. 8V
C71
10 uF
FB25
220 ohm
R81
41. 2K
C30
100 pF
C72
10 uF
R114
20. 5K
2
7
RN21-B
10K
3
6
RN21-C
10K
14
12
10
8
6
4
2
11
USB-
9
7
5
GND
3
GND
1
13
USB+
16
5V
15
5V
HD1
HD_2X8_DC_2. 54MM_TH
FB11
220 ohm
2
7
RN7-B
3. 3K
R171
9. 1K
