NCP1012ST65T3G ON Semiconductor, NCP1012ST65T3G Datasheet - Page 19

• Manufacturer Part Number: NCP1012ST65T3G
• Description: IC OFFLINE SWIT SMPS CM SOT223
• Manufacturer: ON Semiconductor

Specifications of NCP1012ST65T3G

• Output Isolation: Isolated
• Frequency Range: 59 ~ 71kHz
• Voltage - Input: 8.5 ~ 10 V
• Voltage - Output: 700V
• Power (watts): 19W
• Operating Temperature: -40°C ~ 125°C
• Package / Case: TO-261-4, TO-261AA, SOT-223-4
• Duty Cycle (max): 72 %
• Mounting Style: SMD/SMT
• Switching Frequency: 71 KHz
• Operating Supply Voltage: - 0.3 V to + 10 V
• Maximum Operating Temperature: + 150 C
• Synchronous Pin: No
• Topology: Flyback
• Pwm Type: Current Mode PWM Controller
• On/off Pin: No
• Adjustable Output: No
• Switching Freq: 71KHz
• Duty Cycle: 72%
• Operating Supply Voltage (max): 10V
• Mounting: Surface Mount
• Pin Count: 3 +Tab
• Package Type: SOT-223
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1012ST65T3G; NCP1012ST65T3GOSTR

Typical Application Examples
A 6.5 W NCP1012- -Based Flyback Converter
delivering 6.5 W from a universal input. The board uses the
Dynamic Self- -Supply and a simplified Zener- -type
the following results:


CEE7.5/2
Figure 28 shows a converter built with a NCP1012
The converter built according to Figure 29 layouts, gave
Efficiency at Vin = 100 Vac and Pout = 6.5 W = 75.7%
Efficiency at Vin = 230 Vac and Pout = 6.5 W = 76.5%
J1
47 R
R1
1
2
2
Figure 29. The NCP1012- -Based PCB Layout . . . and its Associated Component Placement
D1
1N4007
D3
1N4007
Figure 28. An NCP1012- -Based Flyback Converter Delivering 6.5 W
D2
1N4007
D4
1N4007
E1
10 m/400 V
E2
10 m/16 V
http://onsemi.com
19
R2
150 k
1
2
3
7
feedback. This configuration was selected for cost reasons
and a more precise circuitry can be used, e.g. based on a
TL431:
V
GND
GND
GND
CC
NCP1012
IC1
C1
2.2 nF
GND
HV
FB
U160
4 4
8
5
D5
1
4
PC817
2n2/Y
TR1
C2
IC2
8
7
6
5
470 m/25 V
B150
100 R
D6
E3
R3
11 V
ZD1
R4
180 R
2
1
CZM5/2
J2