參數(shù)資料
型號(hào)： NCP1271
廠商： ON SEMICONDUCTOR
英文描述： Soft−Skip Mode Standby PWM Controller with Adjustable Skip Level and External Latch
文件頁(yè)數(shù)： 1/19頁(yè)
文件大小： 159K
代理商： NCP1271
Semiconductor Components Industries, LLC, 2006
December, 2006 Rev. 2
1
Publication Order Number:
NCP1271/D
NCP1271
SoftSkip Mode Standby
PWM Controller with
Adjustable Skip Level and
External Latch
The NCP1271 represents a new, pin to pin compatible, generation
of the successful 7pin current mode NCP12XX product series. The
controller allows for excellent stand by power consumption by use of
its adjustable SoftSkip mode and integrated high voltage startup
FET. This proprietary SoftSkip also dramatically reduces the risk of
acoustic noise. This allows the use of inexpensive transformers and
capacitors in the clamping network. Internal frequency jittering,
ramp compensation, timerbased fault detection and a latch input
make this controller an excellent candidate for converters where
ruggedness and component cost are the key constraints.
Features
FixedFrequency CurrentMode Operation with Ramp
Compensation and Skip Cycle in Standby Condition
TimerBased Fault Protection for Improved Overload Detection
“SoftSkip Mode” Technique for Optimal Noise Control in Standby
Internal HighVoltage Startup Current Source for Lossless Startup
5% Current Limit Accuracy over the Full Temperature Range
Adjustable Skip Level
Internal Latch for Easy Implementation of Overvoltage and
Overtemperature Protection
Frequency Jittering for Softened EMI Signature
+500 mA/800 mA Peak Current Drive Capability
Sub100 mW Standby Power can be Achieved
PintoPin Compatible with the Existing NCP120X Series
This is a PbFree Device
Typical Applications
ACDC Adapters for Notebooks, LCD Monitors
Offline Battery Chargers
Consumer Electronic Appliances STB, DVD, DVDR
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
PIN CONNECTIONS
http://onsemi.com
MARKING
DIAGRAMS
(Top View)
1271x
ALYW
x
= A or B
A= 65 kHz
B= 100 kHz
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
A
L
Y
W
1
8
(Note: Microdot may be in either location)
Skip/latch
FB
CS
GND
1
2
3
4
HV
V
CC
Drv
8
6
5
SOIC7
D SUFFIX
CASE 751U
SOIC7
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
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NCP1271ADAPGEVB 功能描述:電源管理IC開(kāi)發(fā)工具 NCP1271 57 W EVB PBFREE RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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NCP1271D100R2G 功能描述:電流型 PWM 控制器 ANA PMW CONTROLLER RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
NCP1271D100R2GH 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:
NCP1271D65R2G 功能描述:電流型 PWM 控制器 ANA PMW CONTROLLER RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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