 
			 
			MCQOPTIONS
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				| 1. | Find the value of Rsc, L and Co for a µA7840 switching regulator to provide +5 v at 3A, using the following specifications: toff= 24µs, ripple voltage = 400mA and ton=26µs.$ | 
| A. | R<sub>sc</sub> = 55 mΩ , L = 25µH & C<sub>o</sub> = 750µF | 
| B. | R<sub>sc</sub> = 550 mΩ , L = 25µH & C<sub>o</sub> = 75µF | 
| C. | R<sub>sc</sub> = 650 mΩ , L = 25µH & C<sub>o</sub> = 65µF | 
| D. | R<sub>sc</sub> = 720 mΩ , L = 25µH & C<sub>o</sub> = 250µF | 
| Answer» B. R<sub>sc</sub> = 550 m‚âà√≠¬¨¬© , L = 25¬¨¬®¬¨¬µH & C<sub>o</sub> = 75¬¨¬®¬¨¬µF | |