Datasheet > NCP1200

NCP1200

更新时间： 2024-11-25 21:54:43

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
16页	154K
描述
PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies

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NCP1200 数据手册

NCP1200

PWM Current−Mode

Controller for Low−Power

Universal Off−Line Supplies

Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a

major leap toward ultra−compact Switchmode Power Supplies. Due to

a novel concept, the circuit allows the implementation of a complete

offline battery charger or a standby SMPS with few external

components. Furthermore, an integrated output short−circuit

protection lets the designer build an extremely low−cost AC−DC wall

adapter associated with a simplified feedback scheme.

With an internal structure operating at a fixed 40 kHz, 60 kHz or

100 kHz, the controller drives low gate−charge switching devices like

an IGBT or a MOSFET thus requiring a very small operating power.

Due to current−mode control, the NCP1200 drastically simplifies the

design of reliable and cheap offline converters with extremely low

acoustic generation and inherent pulse−by−pulse control.

http://onsemi.com

MARKING

DIAGRAMS

SOIC−8

D SUFFIX

CASE 751

200Dy

ALYW

PDIP−8

P SUFFIX

CASE 626

1200Pxxx

AWL

YYWW

When the current setpoint falls below a given value, e.g. the output

power demand diminishes, the IC automatically enters the skip cycle

mode and provides excellent efficiency at light loads. Because this

occurs at low peak current, no acoustic noise takes place.

xxx

= Device Code: 40, 60 or 100

= Device Code:

4 for 40

Finally, the IC is self−supplied from the DC rail, eliminating the

need of an auxiliary winding. This feature ensures operation in

presence of low output voltage or shorts.

6 for 60

1 for 100

= Assembly Location

= Wafer Lot

Features

• No Auxiliary Winding Operation

Y, YY = Year

W, WW = Work Week

• Internal Output Short−Circuit Protection

• Extremely Low No−Load Standby Power

• Current−Mode with Skip−Cycle Capability

• Internal Leading Edge Blanking

• 250 mA Peak Current Source/Sink Capability

• Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz

• Direct Optocoupler Connection

• Built−in Frequency Jittering for Lower EMI

• SPICE Models Available for TRANsient and AC Analysis

• Internal Temperature Shutdown

PIN CONNECTIONS

Adj

GND

Drv

(Top View)

• Pb−Free Packages are Available

ORDERING INFORMATION

Typical Applications

See detailed ordering and shipping information in the package

dimensions section on page 14 of this data sheet.

• AC−DC Adapters

• Offline Battery Chargers

• Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.)

Semiconductor Components Industries, LLC, 2004

Publication Order Number:

December, 2004 − Rev. 13

NCP1200/D

12 3 4 5 6 7...16

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与NCP1200相关器件

型号	品牌	获取价格	描述	数据表
NCP1200/D	ETC	获取价格	PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200_06	ONSEMI	获取价格	PWM Current−Mode Controller for Low−Power Universal Off−Line Supplies
NCP1200_09	ONSEMI	获取价格	PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
NCP1200A	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
NCP1200A/D	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
NCP1200AD100R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
NCP1200AD100R2	ROCHESTER	获取价格	0.25A SWITCHING CONTROLLER, 114kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
NCP1200AD100R2G	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
NCP1200AD100R2G	ROCHESTER	获取价格	0.25A SWITCHING CONTROLLER, 114kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
NCP1200AD40R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power

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