Datasheet

ADP5520
Rev. A | Page 36 of 40
EXAMPLE CIRCUITS
1
PGND
21
VBAT
16
VDDIO
5
SCL
4
SDA
3
nINT
15
nRST
ADP5520
1µF
4.7µH
1µF
VBAT
I/O RAIL
10kΩ 10kΩ
2.2kΩ 2.2kΩ
13
R3
6
R2
7
R1
8
R0
9
C0
10
C1
11
C2
12
C3
ABCD
EFGH
IJKL
MNOP
2
SW
22
BST
23
BL_SNK
20
CAP_OUT
VBAT
100nF
1µF
19
18
24
GND
GND
GND
17
CMP_IN
07445-039
14
ILED
VBAT
Figure 53. I/O Configuration Example 1
1
PGND
21
VBAT
16
VDDIO
5
SCL
4
SDA
3
nINT
15
nRST
ADP5520
1µF
4.7µH
1µF
VBAT
I/O RAIL
10kΩ 10kΩ
2.2kΩ 2.2kΩ
13
R3
6
R2
7
R1
8
R0
9
C0
10
C1
11
C2
12
C3
ABC
EFG
IJK
2
SW
22
BST
23
BL_SNK
20
CAP_OUT
VBAT
100nF
1µF
19
18
24
GND
GND
GND
17
CMP_IN
07445-040
14
ILED
VBAT
Figure 54. I/O Configuration Example 2
1
PGND
21
VBAT
16
VDDIO
5
SCL
4
SDA
3
nINT
15
nRST
ADP5520
1µF
4.7µH
1µF
VBAT
I/O RAIL
10kΩ 10kΩ
2.2kΩ 2.2kΩ
13
R3
6
R2
7
R1
8
R0
9
C0
10
C1
11
C2
12
C3
ABC
EFG
IJK
2
SW
22
BST
23
BL_SNK
20
CAP_OUT
VBAT
100nF
1µF
19
18
24
GND
GND
GND
17
CMP_IN
07445-041
14
ILED
VBAT
I/O I/O
Figure 55. I/O Configuration Example 3
1
PGND
21
VBAT
16
VDDIO
5
SCL
4
SDA
3
nINT
15
nRST
ADP5520
1µF
4.7µH
1µF
VBAT
I/O RAIL
10kΩ 10kΩ
2.2kΩ 2.2kΩ
13
R3
6
R2
7
R1
8
R0
9
C0
10
C1
11
C2
12
C3
14
ILED
ABCD
EFGH
VBAT
2
SW
22
BST
23
BL_SNK
20
CAP_OUT
VBAT
100nF
1µF
19
18
24
GND
GND
GND
17
CMP_IN
07445-042
I/O I/O
Figure 56. I/O Configuration Example 4