BP5220A Ver la hoja de datos (PDF) - ROHM Semiconductor

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Lista de partido

BP5220A

Step-down DC/DC Converters(Non-isolated)

ROHM Semiconductor 

BP5220A/BP5221A/BP5222A

Data Sheet

BP5222A (Unless otherwise noted : Vi=20V, Io=0.25A, SW=1, Ta=25˚C)

Parameter

Input voltage

Output voltage

Output current

Symbol

Vi

VO

IO

Min.

15

11.2

Typ. Max.

38

12

12.8

0.5

Line regulation

22

50

Load regulation

18

50

Output ripple voltage

29

70

Power conversion efficiency

75

90

Switching frequency

fSW

190

CTL pin ON resistance

RON

4.7

CTL pin OFF resistance

ROFF

200

Unit

V

V

A

mV

mV

mVPP

%

kHz

Conditions

Vi=15V to 38V

Io=0.05A to 0.5A

Io=0.5A

Vo>11.2V

Vo<0.1V, SW=2

Measurement circuit

A Input

V

BP5220A / BP5221A / BP5222A

9

7654321

SW

1

2

+

+

A Output

Vf

f ; Frequency counter

Fig.1

T

Switching frequency=1/T

Output ripple voltage

Please note that output ripple voltage depends on the type and characteristics of the output capacitor.

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3/7

2010.03 - Rev. B

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