A

-XT

Series

Series

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Page 4 of 6

Application

Notes

Output Ripple Reduction

By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.

Component selection

Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.

The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.

Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be

such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be >20MHz.

Inductor

Capacitor

L,μH

SMD

Through Hole

C,μF

A0303XT

10

82103C

11R103C

4.7

A0305XT

22

82223C

11R223C

2.2

A0309XT

22

82223C

11R223C

2.2

A0312XT

47

82473C

11R473C

1

A0315XT

220

82474C

11R474C

0.22

A0503XT

10

82103C

11R103C

4.7

A0505XT

10

82103C

11R103C

4.7

A0305NXT

10

82103C

11R103C

4.7

A0509XT

22

82223C

11R103C

2.2

A0512XT

47

82473C

11R223C

1

A0515XT

220

82474C

11R473C

0.22

A1205XT

10

82103C

11R474C

4.7

A1209XT

22

82223C

11R223C

2.2

A1212XT

47

82473C

11R473C

1

A1215XT

220

82474C

11R474C

0.22

Tolerance

Envelopes

The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to

changes in output loading.