SC900A View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC900A' PDF : 23 Pages View PDF
SC900A
POWER MANAGEMENT
Evaluation Board Schematic
VIN INA INB INCD INE
C1
C9 C14 C15 C16
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
J7 J8
GND GND
+5V
EXTERNAL
J9
1
2
EXTERNAL
SUPPLY
C8
10uF
SC900A PWR
SW1
SC900A
Power Select
C11
0.1uF
+5V USB
R12
R13
150
150
D4
D5
USB
EXTERNAL
J11
1
F1
1A
2
3
4
USB
SC900A PWR
TP1
R1
R2
150
150
1
AM1
R3
0
TP2
D1
LDOPGD
Q1
FMMT3904
Q2
FMMT3904
D2
ARST
TP8 TP7
ARST LDOPGD
1
AM2
R4
7.5k
R5
7.5k
TP3 TP4
SCL SDA
U1
VIN 13
INA 19
INB 2
INCD 17
INE 14
5
VIN
INA
INB
INCD
INE
EN
LDOA 20
LDOB 1
LDOC 18
LDOD 16
LDOE 15
VREF 11
9 LDOPGD
10
3
4
ARST
SDA
SCL
6 A0
8
VASEL
12 GND
7
DGND
R7
SC900A PWR
7.5k
R8
7.5k
SC900A
R6
100k
TP5
TP6
A0
VASEL
R14
100k
+5V
R15
100k
USB
U2
6
2
1
32
31
30
29
28
27
26
VDD
P2.0
P2.1
P0.0
P2.2
P0.1
P2.3
P0.2
P2.4
P0.3
P2.5
P0.4
P2.6
P0.5
P2.7
P0.6
P0.7 P3.0/C2D
C2CK/RST
P1.0
18
17
16
15
14
13
12
11
10
9
25
24
23
22
21
20
19
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
VREGIN
VBUS
D+
D-
GND
7
8
5
4
3
C8051F320
R9
100k
SC900A
PWR
J10
C2DAT 1
C2CLK 2
3
PROGRAM & DEBUG
C12 C13
4.7uF 1uF
J1
J2
J3
LDOA LDOB LDOC
J4
J5
LDOD LDOE
C2
C3
0.1uF 2.2uF
C4
C5
2.2uF 2.2uF
C6
2.2uF
C7
2.2uF
TP9
ENABLE
J6
12
SC900A PWR
VASEL
R18
SC900A PWR
R10
150
R11
100k
D3
ENABLE
U3
1
2
3
SC900A
PWR
5
4
100k
(Non-use)
R17
0
NC7S04
C10
0.1uF
SC900A PWR
R16
150
D6
USB BUS
© 2005 Semtech Corp.
20
www.semtech.com
Share Link: 
