Datasheet > NCP1203/D

NCP1203/D

更新时间： 2024-11-25 23:53:23

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
14页	144K
描述
PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection

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NCP1203/D 数据手册

NCP1203

PWM Current−Mode

Controller for Universal

Off−Line Supplies Featuring

Standby and Short Circuit

Protection

http://onsemi.com

Housed in SO-8 or DIP8 package, the NCP1203 represents a major

leap toward ultra- compact Switch- Mode Power Supplies and

represents an excellent candidate to replace the UC384X devices.

Thanks to its proprietary SMARTMOSt Very High Voltage

Technology, the circuit allows the implementation of complete

off-line AC/DC adapters, battery charger and a high-power SMPS

with few external components.

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

100 kHz switching frequency, the controller features a high-voltage

start-up FET which ensures a clean and loss-less start-up sequence.

Its current-mode control naturally provides good audio-susceptibility

and inherent pulse-by-pulse control.

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

power demand diminishes, the IC automatically enters the so- called

skip cycle mode and provides improved efficiency at light loads

while offering excellent performance in standby conditions. Because

this occurs at a user adjustable low peak current, no acoustic noise

takes place.

The NCP1203 also includes an efficient protective circuitry which,

in presence of an output over load condition, disables the output

pulses while the device enters a safe burst mode, trying to restart.

Once the default has gone, the device auto- recovers. Finally, a

temperature shutdown with hysteresis helps building safe and robust

power supplies.

MARKING

DIAGRAMS

SO-8

D1, D2 SUFFIX

CASE 751

XXXXXX

ALYW

XXXXXXXXX

AWL

PDIP-8

N SUFFIX

CASE 626

YYWW

= Specific Device Code

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

PIN CONNECTIONS

Features

• High-Voltage Start-Up Current Source

• Auto-Recovery Internal Output Short-Circuit Protection

• Extremely Low No-Load Standby Power

• Current-Mode with Adjustable Skip-Cycle Capability

• Internal Leading Edge Blanking

Adj

Gnd

Drv

• 250 mA Peak Current Capability

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

• Direct Optocoupler Connection

(Top View)

• Undervoltage Lockout at 7.8 V Typical

• SPICE Models Available for TRANsient and AC Analysis

• Pin to Pin Compatible with NCP1200

ORDERING INFORMATION

Device

Package

PDIP8

SO-8

Shipping

NCP1203P60

50 Units/Tube

Applications

NCP1203D60R2

NCP1203P40

2500/Tape & Reel

50 Units/Tube

• AC/DC Adapters for Notebooks, etc.

• Offline Battery Chargers

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

PDIP8

SO-8

NCP1203D40R2

NCP1203P100

NCP1203D100R2

2500/Tape & Reel

50 Units/Tube

PDIP8

SO-8

2500/Tape & Reel

Semiconductor Components Industries, LLC, 2003

Publication Order Number:

February, 2003- Rev. 3

NCP1203/D

12 3 4 5 6 7...14

中文翻译

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与NCP1203/D相关器件

型号	品牌	获取价格	描述	数据表
NCP1203_05	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Standby
NCP1203_10	ONSEMI	获取价格	PWM Current--Mode Controller for Universal Off--Line Supplies Featuring Standby and Short
NCP1203D100R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203D100R2G	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203D40R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203D40R2G	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Standby
NCP1203D60R2	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203D60R2G	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203P100	ONSEMI	获取价格	PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Ci
NCP1203P100G	ONSEMI	获取价格	PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Standby

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