IC Data Sheets
8.
8.2
Diagram B19
, G5657F12U (IC U7210)
Figure 8-4 Internal block diagram and pin configuration
1
88
60_
3
0
3
_100510.ep
s
100
8
09
Block diagram
Pinning information
EN
LX
8
6
5
1
2
3
4
NC
IN
GND
SS
COMP
FB
7
Thermal
Pad
SOP-8 (FD)
EN
LX
8
6
5
1
2
3
4
NC
IN
GND
SS
COMP
FB
7
Thermal
Pad
Thermal
Pad
SOP-8 (FD)
IN
+
+
+
OTP
In4V
ISEN
P-SWITCH
LX
GND
380kHz
OSCILLATOR
PWM
CONTROL
LOGIC
COMP
ILIMIT
4V LDO
REGULATOR
UVLO
&
POR
SOFTSTART
REFERENCE
&
BIAS
EN
FB
COMP
+
0.92V
DRIVER
EA
20
µ
A
SS
Pull high
3
µ
A
IN
+
+
+
OTP
In4V
ISEN
P-SWITCH
LX
GND
380kHz
OSCILLATOR
PWM
CONTROL
LOGIC
COMP
ILIMIT
4V LDO
REGULATOR
UVLO
&
POR
SOFTSTART
REFERENCE
&
BIAS
EN
FB
COMP
+
0.92V
DRIVER
EA
20
µ
A
SS
Pull high
3
µ
A