Datasheet

NCP3065, NCV3065
http://onsemi.com
12
Figure 22. Boost Demo Board Application Schematic
J1
1
2.2 nF
C3
C5
R11
U1
NCP3065
5
36
4
8
7
1
2
COMP
TCAP
GND
N.C. SWC
SWE
J4
GND
1
J2
1
0.1 mF
220 mF / 50 V
+
V
CC
I
PK
+
J7
ON/OFF
1
1
R1 R2 R3 R4 R5 R6 R7
R10
Q1 Q2
J6
+VAUX
+VIN
BC807−LT1G BC817−LT1G
6x 1R0 ±1%R
0R15
+LED
NU
C4
J3
1
GND
J5
1
−LED
R9
D1
MBRS140LT3G
0.1 mF
C2
100 mF /
50 V
D2
MM3Z36VT1G
C1
100 mH
L1
1k2
R8
1k0
R
SENSE
J7
1
R10
1k2
ON/OFF
Value of Components
Name Value
C1
100 mF/50 V, Electrolytic Capacitor
C2, C5 100 nF, Ceramic Capacitor, 1206
C3
220 mF/50 V, Electrolytic Capacitor
C4 2.2 nF, Ceramic Capacitor, 0805
D1 MBRS140LT3G, Schottky diode
D2 MMSZ36VT1G, Zener diode
L1
100 mH, DO3340P−104ML Coilcraft Inductor
Name Value
Q2 BC817−LT1G, SOT23
R1
150 mW, resistor 0.5 W
R8 1 k, resistor 0805
R9 Load current sense resistor, 1206
R10 1.2 k, resistor 0805
U1 NCP3065, SOIC8
Test Results
Test Condition Results
Line Regulation V
in
= 10 V to 20 V, V
o
= 22 V, I
OAVG
= 350 mA 25 mA
Output Ripple V
in
= 8 V to 20 V, V
o
= 22 V, I
OAVG
= 350 mA 50 mA
Efficiency V
in
= 10 to 20 V, I
OAVG
= 350 mA > 83 %