Datasheet > NCP1218

NCP1218

更新时间： 2024-11-29 10:28:23

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
20页	198K
描述
PWM Controller with Adjustable Skip Level and External Latch Input

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NCP1218 数据手册

NCP1218

PWM Controller with

Adjustable Skip Level and

External Latch Input

The NCP1218 represents a new, pin to pin compatible, generation

of the successful 7−pin current mode NCP12XX product series. The

controller allows for excellent standby power consumption by use of

its adjustable skip mode and integrated high voltage startup FET.

Internal frequency jittering, ramp compensation, timer−based fault

detection and a latch input make this controller an excellent

candidate for converters where ruggedness and component cost are

the key constraints.

http://onsemi.com

SOIC−7

D SUFFIX

CASE 751U

The Dynamic Self Supply (DSS) drastically simplifies the

transformer design in avoiding the use of an auxiliary winding to

supply the NCP1218. This feature is particularly useful in

applications where the output voltage varies during operation (e.g.

battery chargers). Due to its high voltage technology, the IC can be

directly connected to the high voltage dc rail.

MARKING DIAGRAM

1218AZ

ALYW

Features

• Fixed−Frequency 65 kHz Current−Mode Operation with Ramp

Compensation

• Dynamic Self Supply Eliminates the Need for an Auxiliary Winding

• Timer−Based Fault Protection for Improved Overload Detection

• Cycle Skip Reduces Input Power in Standby Mode

• Latched Overload Protection

1218A= Specific Device Code

= Frequency= (6 = 65 kHz)

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

• Internal High Voltage Startup Circuit

• Accurate Current Limit Detector ( 5%)

• Adjustable Skip Level

PIN CONNECTIONS

• Latch Input for Easy Implementation of Overvoltage and

Skip/latch

Overtemperature Protection

• Frequency Modulation for Softened EMI Signature

• 500 mA/800 mA Peak Source/Sink Current Drive Capability

DRV

GND

• Pin to Pin Compatible with the Existing NCP12XX Series

• These Devices are Pb−Free and Halogen Free/BFR Free*

(Top View)

Typical Applications

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 19 of this data sheet.

• AC−DC Adapters for Notebooks, LCD Monitors

• Offline Battery Chargers

• Consumer Electronic Appliances STB, DVD, DVDR

*For additional information on our Pb−Free strategy and soldering details, please

downloadthe ON Semiconductor Soldering and Mounting Techniques Reference

Manual, SOLDERRM/D.

Semiconductor Components Industries, LLC, 2009

Publication Order Number:

October, 2009 − Rev. 1

NCP1218/D

12 3 4 5 6 7...20

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