Datasheet

NCP3066, NCV3066
http://onsemi.com
10
Figure 15. Buck Demoboard with External Switch Application Schematic
ON/OFF
Ipk
COMP
SWC
SWE
CT
GND
V
CC
ON/OFF
V
IN
GND
C
2
+LED
D
2
NCP3066
SOIC
Q
1
R
16
R68
C
7
C
1
+
R
10
10k
Input
−LED
R
11
1k0
D
1
C
9
100p
IC1
C
10
R
19
2n2
R
1
... R
9
...
+
L
1
220 mF
9 x 0R15
C
5
1n8
C
8
m15 100nF
R
17
R33
R
15
1k0
R
12
12k
Q
2
1k0
0.1 mF
Table 1. BILL OF MATERIALS
Desig-
nator
Qty Description Value
Toler-
ance
Footprint Manufacturer
Manufacturer
Part Number
R1;R2;
R3;R4
4 Resistor 0.15R 1% 1206 Susumu RL1632R-R150-F
R10 1 Resisitor 10k 1% 1206 Rohm MCR18EZHF1002
R11;
R15
2 Resisitor 1k 1% 1206 Rohm MCR18EZPF1001
R12 NU Resistor 12k 1% 1206 Rohm MCR18EZHF1202
R16 1 Resistor 0.68R 5% 1210 Panasonic - ECG ERJ-14RQJR68U
R17 OPTION Resistor 0.33R 5% 1210 Panasonic - ECG ERJ-14RQJR33U
R19 1 Resistor 1k 5% 1210 Panasonic - ECG ERJ-14YJ102U
C1 1 Capacitor
220mF/35V
20% 10x12.5 Panasonic EEUFC1V221
C2;C7 2 Capacitor 100nF 10% 1206 Kemet C1206C104K5RACTU
C5 1 Capacitor 1.8nF 10% 1206 Kemet C1206C182K5RACTU
C8 1 Capacitor
150mF/16V
20% F8 SANYO 16SP150M
C9 1 Capacitor 100pF 10% 1206 Vishay/Vitramon VJ1206Y101KXEAT5Z
C10 1 Capacitor 2.2nF 10% 1206 Kemet C1206C222K5RACTU
Q1 1 Power MOSFET
−25A, -30V
NTD18P03L - DPAK ON Semiconductor NTD18P03L
Q2 1 Switching NPN
Transistor
MMBT489LT1G - SOT-23 ON Semiconductor MMBT489LT1G
D2 1 1A, 30V Schottky
Rectifier
MBR130T1G - SOD123 ON Semiconductor MBR130T1G
IC1 1 Switching
Regulator
NCP3066DR2G - SOIC-8 ON Semiconductor NCP3066DR2G
D1 1 3A, 30V Schottky
Rectifier
MBRS330T3G - SMC ON Semiconductor MBRS330T3G
L1 1 Inductor
47 mH
20% Wurth
Elektronik
Wurth Elektronik WE−PD4 74457147