BD2045AFJ, BD2055AFJ

Technical Note

6/12

www.rohm.com

2009.05 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.

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Waveform data

Regarding the output rise/fall and over current detection characteristics of BD2055AFJ, refer to the characteristic of BD2045AFJ.

TIME (2ms/div.)

Fig.30 Over current response

Ramped load

(BD2045AFJ)

TIME (2ms/div.)

Fig.31 Over current response

Enable to shortcircuit

(BD2045AFJ)

(5V/div.)

(5V/div.)

(0.5A/div.)

(5V/div.)

(5V/div.)

(5V/div.)

(0.5A/div.)

(5V/div.)

(5V/div.)

(5V/div.)

(0.5A/div.)

TIME(1ms/div.)

Fig.26 Output rise characteristic

(BD2045AFJ)

(5V/div.)

(5V/div.)

(5V/div.)

(0.5A/div.)

TIME(1ms/div.)

Fig.27 Output fall characteristic

(BD2045AFJ)

(1V/div.)

TIME (2ms/div.)

Fig.28. Inrush current response

(BD2045AFJ)

(0.1A/div.)

(1V/div.)

TIME (20ms/div.)

Fig.29 Over current response

Ramped load

(BD2045AFJ)

(5V/div.)

(5V/div.)

(0.5A/div.)

TIME (2ms/div.)

Fig.32 Over current response

Enable to shortcircuit

(BD2045AFJ)

(5V/div.)

(5V/div.)

(0.5A/div.)

TIME (1s/div.)

Fig.33 Over current response

Enable to shortcircuit

(BD2045AFJ)

(5V/div.)

(5V/div.)

(0.5A/div.)

Thermal Shutdown

(5V/div.)

TIME (10ms/div.)

(BD2045AFJ)

(5V/div.)

(5V/div.)

(0.5A/div.)

TIME (10ms/div.)

(BD2045AFJ)

(5V/div.)

(5V/div.)

(5V/div.)

(0.5A/div.)