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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, M5723B (IC U703)
Figure 8-1 Internal block diagram and pin configuration
20010_300.eps
Block diagram
Pinning information
M5723B
IN1
+
CONTROL
HDRV
A1
+
100m
Ω
80m
Ω
LDRV
R
S
Q
Thermal
Shutdown
UVLO
OSC
Compensation
+
EA
VREF
LX
Zero Current Detect
Current Sense
OC
0.6V
FB1
IN2
OUT2
SHUTDOWN
LOGIC
1.25V
Vref
炼
ERROR
AMP
為
OVER CURRENT
PROTECT & DYNAMIC
FEEDBACK
AGND
R1
R2
OVER TEMP.
PROTECT
EN1
PGND
EN2
IN1
+
CONTROL
HDRV
A1
+
100m
Ω
80m
Ω
LDRV
R
S
Q
Thermal
Shutdown
UVLO
OSC
Compensation
+
EA
VREF
LX
Zero Current Detect
Current Sense
OC
0.6V
FB1
IN2
OUT2
SHUTDOWN
LOGIC
1.25V
Vref
炼
ERROR
AMP
為
OVER CURRENT
PROTECT & DYNAMIC
FEEDBACK
AGND
R1
R2
OVER TEMP.
PROTECT
EN1
PGND
EN2
FB1
10
8
7
1
2
3
4
EN1
AGND
AGND
LX
PGND
IN1
OUT2
M5723B
9
6
5
EN2
IN2
Thermal
Pad
FB1
10
8
7
1
2
3
4
EN1
AGND
AGND
LX
PGND
IN1
OUT2
M5723B
9
6
5
EN2
IN2
Thermal
Pad
FB1
10
8
7
1
2
3
4
EN1
AGND
AGND
LX
PGND
IN1
OUT2
M5723B
9
6
5
EN2
IN2
Thermal
Pad