BD2246G Datasheet, PDF (11/14 Pages) Rohm – 1ch Small Package High Side Switch ICs for USB Devices and Memory Cards

BD2246G, BD2247G
●Typical Application Circuit
Controller
Technical Note
10kΩ~
100kΩ
CIN
5V (Typ.)
VIN
VOUT
GND
EN(/EN) /OC
+
CL
-
Ferrite
Beads
Fig.44 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. In order to decrease voltage fluctuations of power source line to IC,
connect a low ESR capacitor in parallel with CIN. 10μF ~ 100μF or higher is effective.
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.
When using the circuit with changes to the external circuit constants, make sure to leave an adequate margin for external
components including static and transitional characteristics as well as dispersion of the IC.
●Power Dissipation Characteristic
(SSOP5 package)
700
600
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.45 Power Dissipation Curve (Pd-Ta Curve)
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11/13
2011.05 - Rev.A