Datasheet > NCP1201

NCP1201

更新时间： 2024-11-22 21:53:51

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	162K
描述
PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power with Fault Protection Modes

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NCP1201 数据手册

NCP1201

PWM Current−Mode

Controller for Universal

Off−Line Supplies Featuring

Low Standby Power with

Fault Protection Modes

http://onsemi.com

Housed in SOIC−8 or PDIP−8 package, the NCP1201 enhances the

previous NCP1200 series by offering a reduced optocoupler current

with additional Brownout Detection Protection (BOK). Similarly, the

circuit allows the implementation of complete off−line AC−DC

adapters, battery chargers or Switchmode Power Supplies (SMPS)

where standby power is a key parameter.

The NCP1201 features efficient protection circuitry. When in the

presence of a fault (e.g. failed optocoupler, overcurrent condition, etc.)

the control permanently disables the output pulses to avoid subsequent

damage to the system. The IC only restarts when the user cycles the

mains power supply.

With the low power internal structure, operating at a fixed 60 or

100 kHz, the controller supplies itself from the high−voltage rail,

avoiding the need of an auxiliary winding. This feature naturally eases

the designer’s task in battery charger applications. Finally,

current−mode control provides an excellent audio−susceptibility and

inherent pulse−by−pulse control.

MARKING

DIAGRAMS

SOIC−8

D SUFFIX

CASE 751

201Dy

ALYW

PDIP−8

P SUFFIX

CASE 626

1201Pxx

AWL

YYWW

= Device Code: 6 for 60 kHz

= Device Code: 1 for 100 kHz

= Device Code: 60 for 60 kHz

= Device Code: 10 for 100 kHz

= Assembly Location

When the load current falls down to a pre−defined setpoint (V

)

= Wafer Lot

Y, YY = Year

W, WW = Work Week

SKIP

value, e.g. the output power demand diminishes, the IC automatically

enters the skip cycle mode and can provide excellent efficiency under

light load conditions. The skip mode is designed to operate at

relatively lower peak current so that acoustic noise that commonly

takes place will not happen with NCP1201.

PIN CONNECTIONS

BOK

Features

• Pb−Free Packages are Available

• AC Line Brownout Detect Protection, BOK Function

• Latchoff Mode Fault Protection

VCC

DRV

GND

• No Auxiliary Winding Operation

(Top View)

• Internal Output Short−Circuit Protection

• Extremely Low No−Load Standby Power

• Current−Mode with Skip−Cycle Capability

• Internal Overtemperature Shutdown

• Internal Leading Edge Blanking

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 17 of this data sheet.

• 250 mA Gate Peak Current Driving Capability

• Internally Fixed Switching Frequency at 60 or 100 kHz

• Built−in Frequency Jittering for EMI Reduction

• Direct Optocoupler Connection

Typical Applications

• AC−DC Adapters

• Offline Battery Chargers

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

Semiconductor Components Industries, LLC, 2004

Publication Order Number:

October, 2004 − Rev. 3

NCP1201/D

12 3 4 5 6 7...20

中文翻译

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与NCP1201相关器件

型号	品牌	获取价格	描述	数据表
NCP1201/D	ETC	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201_06	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Stan
NCP1201D100R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201D100R2G	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Stan
NCP1201D60R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201D60R2G	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201P100	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201P100G	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201P60	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power wi
NCP1201P60G	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Stan

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