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参数资料
| 型号： | NCP1028P065G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | IC SWIT HV 8DIP |
| 标准包装： | 1,000 |
| 输出隔离： | 隔离 |
| 频率范围： | 58.5kHz ~ 71.5kHz |
| 输入电压： | 7.2 V ~ 10 V |
| 输出电压： | 700V |
| 功率（瓦特）： | 25W |
| 工作温度： | 0°C ~ 150°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm），7 引线 |
| 供应商设备封装： | 7-PDIP |
| 包装： | 管件 |
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NCP1028
High-Voltage Switcher
for Medium Power Offline
SMPS Featuring Low
Standby Power
The NCP1028 offers a new solution targeting output power levels
from a few watts up to 15 W in a universal mains flyback application.
Our proprietary high-voltage technology lets us include a power
MOSFET together with a startup current source, all directly
connected to the bulk capacitor. To prevent lethal runaway in low
input voltage conditions, an adjustable brown-out circuitry blocks
http://onsemi.com
MARKING
DIAGRAM
the activity until sufficient input level is reached.
Current-mode operation together with an adjustable ramp
compensation offers superior performance in universal mains
applications. Furthermore, an Over Power Protection pin brings the
ability to precisely compensate all internal delays in high input voltage
8-LEAD PDIP
P SUFFIX
CASE 626A
P1028Pxxx
AWL
YYWWG
conditions and optimize the maximum output current capability.
Protection wise, a timer detects an overload or a short-circuit and
stops all operations, ensuring a safe auto-recovery, low duty cycle burst
operation.
Finally, a great R DS(on) figure makes the circuit an excellent choice
for standby/auxiliary offline power supplies or applications requiring
higher output power levels.
xxx
A
WL
YY
WW
G
= 65 or 100
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-Free Package
Features
? Built-in 700 V MOSFET with Typical R DS(on) of 5.8 W , T J = 25 ° C
? Current-Mode Fixed Frequency Operation: 65 kHz and 100 kHz
? Fixed Peak Current of 800 mA
? Skip-Cycle Operation at Low Peak Currents
? Internal Current Source for Clean and Lossless Startup Sequence
? Auto-Recovery Output Short Circuit Protection with Timer-Based
PIN CONNECTIONS
V CC GND
Ramp Comp. OPP
Brown-Out
FB Drain
?
?
?
?
?
?
?
?
Detection
Programmable Brown-Out Input for Low Input Voltage Detection
Programmable Over Power Protection
Input to Permanently Latchoff the Part
Internal Frequency Jittering for Improved EMI Signature
Extended Duty Cycle Operation to 80% Typical
No-Load Input Standby Power of 85 mW @ 265 Vac
500 mW Loaded, Input Power of 715 mW @ 230 Vac
These are Pb-Free Devices**
(Top View)
ORDERING INFORMATION
Device Package Shipping *
NCP1028P065G PDIP-8 50 Units / Rail
(Pb-Free)
NCP1028P100G PDIP-8 50 Units / Rail
Typical Applications
? Medium Power AC-DC Adapters for Chargers
? Auxiliary/Standby Power Supplies for ATX and TVS Power Supplies
(Pb-Free)
*For additional information on our Pb-Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
Reference
NCP1028 - 5.8 W
230 VAC
25 W*
90-265 VAC
15 W*
*Typical values, open-frame, 65 kHz version, R q JA < 75 ° C/W, T A = 50 ° C.
**For additional information on our Pb-Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
? Semiconductor Components Industries, LLC, 2007
December, 2007 - Rev. 2
1
Publication Order Number:
NCP1028/D
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