BL8851

Belling
BL8851 Current Mode PWM Power Switch GENERAL DESCRIPTION BL8851 combines a dedicated current mode PWM controller. It is optimized for high performance, low standby power, and cost effective off- line flyback converter applications in 40W~60W range. BL8851 offers complete protection coverage with automatic self-recovery feature including Cycle- by-Cycle current limiting (OCP),CS short protection...
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Технические характеристики

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Корпус SOT236
Тип преобразователя ШИМ контроллер со встроенным силовым ключом
Режим работы
Максимальная частота преобразования
Напряжение питания
Выходной ток
Гистерезис защиты по питанию
Максимальная скважность
  Примечание: Current mode PWM controller; external MOSFET; 40-60W flyback; 65kHz fixed; soft start; frequency shuffling; burst mode; auto-recovery protections
Рабочая температура
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Файлы 1

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BL8851 Current Mode PWM Power Switch GENERAL DESCRIPTION BL8851 combines a dedicated current mode PWM controller. It is optimized for high performance, low standby power, and cost effective off- line flyback converter applications in 40W~60W range. BL8851 offers complete protection coverage with automatic self-recovery feature including Cycle- by-Cycle current limiting (OCP),CS short protection, CS floating protection, over load protection (OLP), and VDD under voltage lockout (UVLO), over temperature protection (OTP), over voltage(fixed or adjustable) protection (OVP). The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation. BL8851 is offered in SOT23-6 package. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ o o o o o o Power on Soft Start Reducing MOSFET Vds Stress Frequency shuffling for EMI Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design Audio Noise Free Operation Fixed 65KHZ Switching Frequency Internal Synchronized Slope Compensation Leading Edge Blanking on Current Sense Input Good Protection Coverage With Auto Self Recovery VDD Under Voltage Lockout with Hysteresis(UVLO) Over Temperature Protection (OTP) with auto-recovery Cycle-by-cycle over current threshold setting for constant output power limiting over universal input voltage range Overload Protection (OLP) with auto- recovery Over voltage Protection(OVP) with auto-recovery Adjustable OVP through external Zener APPLICATIONS Offline AC/DC flyback converter for ■ AC/DC adapter ■ PDA power supplies ■ Digital Cameras and Camcorder Adapter ■ VCR, SVR, STB, DVD&DVCD Player SMPS ■ Set-Top Box Power ■ Auxiliary Power Supply for PC and Server ■ Open-frame SMPS Order information Part Number Package Packing BL8851 SOT23-6 3000 pcs / Tape & Reel www.belling.com.cn 1 V2.1 PDF
Документация на BL8851 

Дата модификации: 12.11.2026

Размер: 670.6 Кб

7 стр.

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