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UPC1934 Fiches technique(PDF) 12 Page - NEC |
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UPC1934 Fiches technique(HTML) 12 Page - NEC |
12 / 20 page Data Sheet G13567EJ3V0DS00 12 µµµµ PC1934 3. NOTES ON USE 3.1 Setting the Output Voltage Figure 3-1 illustrates the method of setting the output voltage. The output voltage is obtained using the formula shown in the figure. The common mode input voltage range of the error amplifier is 0 to 0.4 V (TYP.) for both the error amplifiers, E/A1 and E/A2. Therefore, select a resistor value that gives this voltage range. Figure 3-1 Setting the Output Voltage (1) When setting a positive output voltage using error amplifier E/A1. (2) When setting a negative output voltage using error amplifier E/A2. 16 4 3 5 RNF CNF R4 R3 R2 R1 VREF VREF VOUT (positive voltage) VOUT = 1 + R1 R2 •• R4 R3 + R4 E/A1 16 13 14 12 RNF CNF R4 R3 R2 R1 VREF VREF VOUT (negative voltage) VOUT = • R1R4 −R2R3 R1 (R3+R4) E/A2 |
Numéro de pièce similaire - UPC1934 |
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Description similaire - UPC1934 |
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