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MC34063A-D08-T Datasheet(PDF) 10 Page - Unisonic Technologies |
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MC34063A-D08-T Datasheet(HTML) 10 Page - Unisonic Technologies |
10 / 10 page MC34063A LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 10 of 10 www.unisonic.com.tw QW-R103-008,H DESIGN FORMULA TABLE CALCULATION STEP-DOWN STEP-UP VOLTAGE-INVERTING tON tOFF VOUT + VF VIN -VCE(SAT) (tON+tOFF)MAX CT 4x10 -5 tON 4x10 -5 tON 4x10 -5 tON ISW 2IOUT(MAX) RS 0.3/ISW 0.3/ISW 0.3/ISW L(MIN) CO IOUT tON VRIPPLE(P-P) VCE(SAT) - Saturation voltage of the output switch. VF - Forward voltage drop of the ringback rectifier. The following power supply characteristics must be chosen: VIN - Nominal input voltage. VOUT - Desired output voltage, VOUT =1.25(1+R2/R1) IOUT - Desired output current. FMIN - Minimum desired output switching frequency at the selected values for VIN and IOUT. VRIPPLE(P-P) - Desired peak-to-peak output ripple voltage. In practice, the calculated value will need to be increased due to the capacitor equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly effect the line and load regulation. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. |
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