Linear Technology Analog Devices DC2688A, Demo Manual

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15
DEMO MANUAL DC2688A
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
NOTE: UNLESS OTHERWISE SPECIFIED. 1. All Resistors 0603 2. All Capacitors 0402/0603
Close
to
IC.
Lvl2
VBUS(1)
D‐(2 ) D+(3)
GND (4)
SHLD(5) SHLD(6)
USB
‐B
Reference
VBUS(1)
D‐(2 )
D+(3)
GND (4)
SHLD(5) SHLD(6)
USB
‐A
Reference
ON
OFF
DIV
Close to IC
VBUS
EN
VERSION
TABLE
ASSY
VERSION
DC2688A
‐A
DC2688A
‐B
LT8698S LT8698S
‐1
U1
0.1uF
OPT
CVIN2
0.1uF
OPT
CVIN3
*
*
*
*
INTVCC
INTVCC
INTVCC INTVCC INTVCC INTVCC
VIN VIN
VEMI
EXT_SEL1
EXT_SEL2
EXT_SEL3
V5V_IN
VBUS_DET
STATUS
IMON
VBUS
/FLT
V3V3
SUS_IND
IMON
IMON_IN
Y1
24.0000MHz
E10
IMON
C33 0.1uF 0402
R38
10k
L4
10nH 0201
MLG0603P10NHTD25
R10 100k
R30 OPT
U1
LD‐
13
/FLT
4
BST
26
EN/UVLO
3
SEL3
8
SEL1
6
STATUS
5
SW
25
PGN D
27
HD‐
15
SW
24
VIN
29
GND
23
OUT/ISP
22
GND
1
BUS/ISN
21
USB5V
20
VIN
30
CLAMP
18
VCC
2
RT
9
SYNC
10
GND
11
RCBL
19
GND
14
HD+
16
SEL2
7
LD+
12
GND
17
PGN D
32
GND
33
GND
34
GND
35
GND
36
GND
37
R27 OPT
C27
1000pF
0402
R25 330
C18
0.1uF
E2
GND
R66
10k
+
C8 22uF 63V 63CE22BS
RSEN1
0.01
WSL0805R0100FEA
JP8
ON
OFF
IMON
A/D
1
3
2
R16 4.99k
JP2
Z
SEL1
HI
µC
LO
1 3 5
6 4 2
7
8
C36 1000pF
E5
/FLT
C49 1uF 10V
+
COUT2
OPT 7343
C50 0.1uF
0402
25V
C56 1uF 25V X5R
E7
VEMI
6V
‐
42V
R36
10k
C26
1uF
E6
STATUS
C42 10uF 50V 1210
C47 4700pF
C45 1uF 0603
R11 100k
E1
VIN
6V
‐
42V
R28 100k
R9
330
C38 1uF 50V
C30 0.1uF
R41
10k
L6 0.47uH IHLP1616BZERR47M11
C41 10uF 50V 1210
CVIN1
4.7uF
1206
50V
U2
USB2422
VBUS_DET
16
USB UP_ DM
19
USB UP_ DP
20
SMBCLK
14
SMBDATA
13
SUSP_IND
17
RESET_N
15
RBI AS
24
XTALIN
22
XTALOUT
21
VSS
25
USBDN1_DP
3
USBDN1_DM
2
USBDN2_DP
5
USBDN2_DM
4
OSC1
8
OSC2
12
PRTPWR1
7
PRTPWR2
11
PLLFILT
23
CRFILT
10
VDDA33
18
PLLREF/VDDA3
1
REG /VDDA 33
9
TEST
6
C34
1000pF
0402
R39 10k
R19
100k
COUT1 22uF 25V 1210 X7R
JP1
1 3 5
6 4 2
L5
10nH 0201
MLG0603P10NHTD25
CVIN2
0402
E11
EXT_SYNC
C31
1uF
C39 1uF
R56
10k
R24 100k
C25 1000pF
J2
USB
‐A
2.0
629 004 160 21
1 2 3 4 5 6
R44 100k
R35 OPT
C37 0.1uF
R29 100k
J3
USB
‐B
61400416121
1
2
3
4
5
6
E8
VBUS 5V
/
2.5A
C29
1000pF
D3 RED
VLMS30K1L2
‐GS08
2 1
R31 2k
C43 1uF 50V
R23 OPT
JP3
Z
SEL2
HI
µC
LO
1 3 5
6 4 2
7
8
C35 0.1uF
JP4
Z
SEL3
HI
µC
LO
1 3 5
6 4 2
7
8
R67
10k
+
C22
100uF
25V
EEHZA1E101XP
1 2
R34 2k
L1 2.2uH
XFL5030
‐222MEB
R53
4.99k
R21 100k
C24
18pF 0402
L2
10nH 0201
MLG0603P10NHTD25
R55
10k
D11
GREEN
VLMC3101
‐GS08
2
1
FB1
MPZ2012S221ATD25
R42 100k
R33
10k
JP5
SYNC
FCM
W/SSM
PSK FCM
W/O
SSM
or
SYNC
1 3 5
6 4 2
C28 0.1uF 0402
CVIN3
0402
C19
2.2uF
C58 1uF
0402 25V
R65
10k
R37 9.09k
R15 4.99k
R32
100k
C40 1uF 50V
E9
GND
R40
10k
R20 12k 0402
D4 YELLOW
VLMY30K2M1
‐GS08
2 1
L3 10nH 0201
MLG0603P10NHTD25
C48 0.1uF 25V 0402
C32 1000pF
C23 18pF 0402
INTVCC
RT
CLAMP RCBL USB5V VBUS OUT/ISP
IMON
VBUS_DET
/FLT
STATUS
HD
‐
V3V3
V3V3
SUS_IND
VBUS
V3V3
V5V_IN
V3V3
VBUS_DET
HD+
USBUP_DM
USB UP_ DP
ENUVLO
SYNC
SEL2 SEL1
V3V3
SEL3
V3V3