آی سی سوییچینگ
NCP1271A
current mode Controller for SMPS
کیفیت: ORIGINAL(distributor) پکیج: SOP-7
قیمت تک فروشی 576,250 ریال
قیمت عمده 543,750 ریال (10 به بالا)
قیمت ویژه 533,675 ریال (100 به بالا)
قیمت فوق العاده528,638 ریال (1000 به بالا)
 قیمت تک فروشی 0.682 تتر با تخفیف
3.33.13.043.01
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توضیحات
ايسي NCP1271Aيک ايسي کنترلر جريان با مد PWM براي منبع تغذيه هاي سوييچينگ با قابليت استند باي و محافظ اتصال کوتاه که در پکيج هاي -SOP7عرضه ميشود. *ويژگي ها : *مصرف جريان بسيار پايين در مد بي باري و استند باي *جريان خروجي تا 500 ميلي امپر *فرکانس عملياتي داخلي تثبيت شده *محافظ اضافه ولتاژ و اضافه دمايي*کاربرد ها : *منبع تغذيه هاي نوت بوک ، شارژر هاي باطري و...
Description
The NCP1271 represents a new, pin to pin compatible, generation
of the successful 7-pin current mode NCP12XX product series. The
controller allows for excellent stand by power consumption by use of
its adjustable Soft?Skip mode and integrated high voltage startup
FET. This proprietary Soft?Skip 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, 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.
Features
• Fixed?Frequency Current?Mode Operation with Ramp
Compensation and Skip Cycle in Standby Condition
• Timer?Based Fault Protection for Improved Overload Detection
• “Soft?Skip Mode” Technique for Optimal Noise Control in Standby
• Internal High?Voltage 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
• Sub?100 mW Standby Power can be Achieved
• Pin?to?Pin Compatible with the Existing NCP120X Series
• This is a Pb?Free Device
Typical Applications
• AC?DC Adapters for Notebooks, LCD Monitors
• Offline Battery Chargers
• Consumer Electronic Appliances STB, DVD, DVDR
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