BD2220G データシートの表示（PDF） - ROHM Semiconductor
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BD2220G Datasheet PDF : 13 Pages
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BD2220G, BD2221G
●Typical Application Circuit
Controller
Technical Note
10kΩ~
100kΩ
CIN
5V (Typ.)
VIN
VOUT
GND
EN(/EN) /OC
+
CL
-
Ferrite
Beads
Fig.41 Typical application circuit
●Application Information
When excessive current flows owing to output shortcircuit or so, ringing occurs by inductance of power source line to IC,
and may cause bad influences upon IC actions. In order to avoid this case, connect a bypath capacitor CIN by VIN terminal
and GND terminal of IC. 1μF or higher is recommended.
Pull up /OC output by resistance 10kΩ ~ 100kΩ.
Set up value which satisfies the application as CL and Ferrite Beads.
This system connection diagram doesn’t guarantee operating as the application.
The external circuit constant and so on is changed and it uses, in which there are adequate margins by taking into account
external parts or dispersion of IC including not only static characteristics but also transient characteristics.
●Power Dissipation Characteristic
(SSOP5 package)
700
600
675mW
500
400
300
200
100
0
0
25
50
75 85
100
125
150
AMBIENT TEMPERATURE : Ta [℃]
* 70mm x 70mm x 1.6mm Glass Epoxy Board
Fig.42 Power dissipation curve (Pd-Ta curve)
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© 2011 ROHM Co., Ltd. All rights reserved.
10/12
2011.05 - Rev.B
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