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BA3963 데이터시트(PDF) 7 Page - Rohm |
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BA3963 데이터시트(HTML) 7 Page - Rohm |
7 / 9 page 213 Regulator ICs BA3963 FApplication example FOperation notes (1) Operating power supply voltage When operating within proper ranges of power supply voltage and ambient temperature, most circuit functions are guaranteed. Although the rated values of electrical characteristics cannot be absolutely guaranteed, char- acteristic values do not change drastically within the proper ranges. (2) Power dissipation (Pd) Refer to the heat reduction curves (Fig. 5) and the rough estimation of IC power dissipation given on a separate page. If power dissipation exceeds the allowable limit, the functionality of IC will be degraded (such as reduction of current capacity by increased chip temperature). Make sure to use the IC within the allowable range of power dissipation with a sufficient margin. (3) Preventing oscillation at each output To stop oscillation of output, make sure to connect a ca- pacitor having a capacitance of 10 µF or greater between GND and each output pin. Also, the 5V output ripple re- jection is improved by connecting a capacitor having a capacitance of 1 µF or greater between pins 4 and 6. When connecting the capacitors, be sure to connect the polarities correctly. Oscillation of output can occur if ca- pacitance is susceptible to temperature. We recommend using a tantalum electrolytic capacitor with minimal changes in capacitance. |
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