TL431 datasheet(10/16 Pages) MOTOROLA

部品番号	TL431

部品情報	PROGRAMMABLE PRECISION REFERENCES

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メーカー	MOTOROLA [Motorola, Inc]

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TL431, A, B Series

10

MOTOROLA ANALOG IC DEVICE DATA

Figure 30. High Efficiency Step–Down Switching Converter

150

mH @ 2.0 A

1N5823

0.01

µF

+

470

µF

51 k

0.1

µF

+

2200

µF

4.7 k

Vin = 10 V to 20 V

TIP115

MPSA20

1.0 k

4.7 k

10

2.2 k

100 k

Vout = 5.0 V

Iout = 1.0 A

Test

Conditions

Results

Line Regulation

Vin = 10 V to 20 V, Io = 1.0 A

53 mV (1.1%)

Load Regulation

Vin = 15 V, Io = 0 A to 1.0 A

25 mV (0.5%)

Output Ripple

Vin = 10 V, Io = 1.0 A

50 mVpp P.A.R.D.

Output Ripple

Vin = 20 V, Io = 1.0 A

100 mVpp P.A.R.D.

Efficiency

Vin = 15 V, Io = 1.0 A

82%

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