Datasheet

NCP5603
http://onsemi.com
10
6
1
U2A
NL27WZ14
4
3
U2B
NL27WZ14
+
+
V
bat
C1P
3 2 9
C1N EN/PWM
6
Fsel
4
Vsel
5
GND
8
GND
Vsel
Fsel
NCP5603
C2N
C1P
C2
1 mF/16 V
7
10
V
out
V
CC
D1
LW67C
R6
C3
1.0 mF/16 V
GND
U1
1
GND
D2
LW67C
R7
D3
LW67C
R8
D4
LW67C
R9
82 W
TP2
TP1
V
out
I
SENSE
1
1
C1
1 mF/16 V
V
CC
R4
10 k
GND
R5
10 k
GND
S3
S2
Vsel
Fsel
C7
100 nF
C4
4.7 mF/16 V
GND
R3
10 k
P1
200 kA
S4
GND
4 mm
J1 V
CC
4 mm
J2 GND
POWER
GND
2
34
PK1
2 x 1.5 V
-
+
1
GND
Q
Q
C6
100 nF
2 1 4
5 3
6 7
RC
C A B CLR
R2
100 k
R1
C5
33 nF
S1
V
CC
GND
Q
Q
14 15 12 11 13
10 9
RC
C A B CLR
CNT/PWM
GND
GND
C8
100 nF
GND
GROUND
Z3
R11
1.5 k
GND
V
CC
R10
10 k
V
CC
GND
D5
PWM
U3A MC14538B U3A MC14538B U3B MC14538B
Figure 12. Evaluation Board Schematic Diagram
Adjust PWM
82 W
82 W
82 W