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HT2801S Scheda tecnica(PDF) 1 Page - Hotchip Technology Co.,Ltd |
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HT2801S Scheda tecnica(HTML) 1 Page - Hotchip Technology Co.,Ltd |
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1 / 6 page  HT2801S 1/6 High Accuracy CV/ CC Primary Sensing Regulation Controller IC www.hotchip.com.cn Ver1.0 Description HT2801S 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. HT2801S 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 800V 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 ◆ Handset/ Mobile Phone Chargers ◆ DSC/ Tablet Chargers ◆ Power Adaptors with limited output power 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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