NCP1028LEDGEVB【PDF 1/29 页】EVAL BOARD FOR NCP1028LEDG

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录996

[1页]2页 3页 4页 5页

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

= 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

Publication Order Number:

NCP1028/D

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式