34063CM 데이터 시트보기 (PDF) - BCD Semiconductor
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34063CM Datasheet PDF : 13 Pages
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Preliminary Datasheet
0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Typical Applications (Continued)
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Figure 12. Voltage Inverting Converter (Note 7)
Note 7: This is a typical inverting converter configuration. The working process in the steady state is similar to
step-up converter, the difference in this situation is that the voltage at the non-inverting pin of the comparator is
equal to 1.25V+VOUT, then Vpin5 = VOUT * R2/(R1+R2) = 1.25V+VOUT, so the output voltage can be decided by
VOUT = -1.25 * (R1+R2)/R1 (V).
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
10
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