IC Data Sheets
8.
8.
IC Data Sheets
This chapter shows the internal block diagrams and pin
configurations of ICs that are drawn as “black boxes” in the
electrical diagrams (with the exception of “memory” and “logic”
ICs).
8.1
Diagram
, B01, G5309QN1U (IC U702)
Figure 8-1 Internal block diagram and pin configuration
19970_300.eps
Block diagram
Pinning information
OUT
TON
FB
VCC
EN
B
S
T
NC
9
8
7
6
5
4
3
2
1
10
11
12
1
3
14
15
16
17
18
19
20
21
22
2
3
24
25
26
27
2
8
PG
O
O
D
ILIM
AGND
V5V
PGND
LX
LX
LX
LX
PG
N
D
PG
N
D
LX
LX
PG
N
D
PG
N
D
PG
N
D
PG
N
D
V+
V+
V+
V+
AGND
V+
LX
OUT
TON
FB
VCC
EN
B
S
T
NC
9
8
7
6
5
4
3
2
1
10
11
12
1
3
14
15
16
17
18
19
20
21
22
2
3
24
25
26
27
2
8
PG
O
O
D
ILIM
AGND
V5V
PGND
LX
LX
LX
LX
PG
N
D
PG
N
D
LX
LX
PG
N
D
PG
N
D
PG
N
D
PG
N
D
V+
V+
V+
V+
AGND
V+
LX
G5309QN1U
PWM
controller
0.75V
Reference
PGOOD
BST
LX
PGND
TON
OUT
FB
EN
ILIM
AGND
OCP
POR
On-Time
Off-Time
DISCHG
VCC
OT
OVP
UVP
KV+
5V
LDO
V5V
V+
V5V
V+
DH
DL
Q1
Q2
PWM
controller
0.75V
Reference
PGOOD
BST
LX
PGND
TON
OUT
FB
EN
ILIM
AGND
OCP
POR
On-Time
Off-Time
DISCHG
VCC
OT
OVP
UVP
KV+
5V
LDO
V5V
V+
V5V
V+
DH
DL
Q1
Q2