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HT2800S Datasheet(PDF) 1 Page - Hotchip Technology Co.,Ltd |
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HT2800S Datasheet(HTML) 1 Page - Hotchip Technology Co.,Ltd |
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1 / 6 page  HT2800S 1/6 High Performance Primary Sensing Regulation Controller IC www.hotchip.com.cn Ver1.0 Description HT2800S is high performance primary sensing regulation and monolithic switching- mode power controller which is designed for small- power supply equipment with current mode control. Built- in accurate CV/CC control circuit. High integration design, a high performance power BJT and PFM controller and full protection circuits in single chip, to minimize external components and save the cost effectively. HT2800S can be simply designed a typical flyback switch converter, the unique driving technology promotes the characteristics of withstand voltage and achieves excellent converting efficiency . Fig. 1. CC vs CV Curve ( Typ.) Features ◆ Built- in 700V power BJT ◆ PSR control, eliminates Opto- coupler and TL431 ◆ Accurate CV/CC control ◆ Hysteresis over- temperature protection (OTP) circuit ◆ High efficiency and meet Level 6 efficiency standards ◆ Output voltage protection (OVP/UVLO) ◆ < 100 mW no- load consumption ◆ Auto- Restart function ◆ Ultra-low start-up current ◆ Good EMC characteristic allows the simple EMC circuit Application ◆ Intelligent mobile phone/small size tablet computer ◆ Digital cameras and other small digital products ◆ Power adapters for network products etc ◆ RCC solutions Replace. Typical Application Circuitry VIN C1 LP NP VAUX Naux RFB1 RFB2 RCS CCPC HV Driver CS FB GND CPC NS VS Co VO IOUT Vout ±5% ±10% Iout OUTput CC/CV VI Characteristic + + |
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