TOP209/210 pin configuration

Published:2011/11/14 3:22:00 Author:May | Keyword: pin configuration | From:SeekIC

TOP209/210 series is a kind of highly efficient, low-power, pulse width modulated type three-terminal chip switching power supply successfully developed by Power Company in 1997 and is suitable for Stand-by Power of small power switching power supply with less than 8W power or electrical equipment. TOP209/210 has two kinds of package: 8 foot dual inline (DIP-8) and 8-pin surface mount (SMD-8). Pin configuration is shown in the diagram. It is still equivalent to three-terminal devices because pin 2,3,6,7 all are empty (NC). Pin 1 and pin 8are connected inside. The only difference is pin 1 is connected with external bias / feedback Back to bypass capacitor terminal and control the negative side and pin 8 is external connected with high back end of the primary grade (HVRTN) when designing PCB. Pin 4 is connected with control end and pin 5 is connected with drain end. Its working principle is the samewith TOP100. But we must explain that: (1) TOP209's switching frequency is changed to 70kHz, and the switching frequency of TOP210 is still 100kHz; (2) both ofthe thermal shutdown temperatureis 145°C, and it is 10°C higher than TOPSwitch - Ⅱ's; (3) TOP209/210's limiting current values ​​separatelyare 0.15 ~ O.23A, 0.23 ~ 0.30A; (4) Power MOSFET's withstand voltage is 700V.



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