UPC1935 データシートの表示（PDF） - NEC => Renesas Technology

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UPC1935

DC-DC CONVERTER CONTROL IC

NEC => Renesas Technology 

µ PC1935

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 input threshold value of the error amplifier is 0.3 V (TYP.) for all the error amplifiers, E/A1, E/A2, and E/A3.

Therefore, select a resistor value that gives this voltage.

Figure 3-1 Setting the Output Voltage

(1) When setting a positive output voltage using error amplifier E/A1.

VOUT (positive voltage)

VOUT =

1 + R1

R2

0.3

R1

6

CNF

R2

RNF

E/A1

7

0.3 V

(2) When setting a positive output voltage using error amplifier E/A2.

VOUT (positive voltage)

VOUT =

1 + R1

R2

0.3

R1

11

CNF

R2

RNF

E/A2

10

0.3 V

14

Data Sheet G13418EJ3V0DS00

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