BD4155FV_10 Datasheet, PDF(4/17 Page) Rohm – Power Switch IC for ExpressCard

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BD4155FV_10 Datasheet, PDF (4/17 Pages) Rohm – Power Switch IC for ExpressCard

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BD4155FV

âReference data

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

5.0ms/div

Fig.1 Card Assert/ De-assert

(Active)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

5.0ms/div

Fig.4 System ActiveâStandby

(No Card)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.7 Wakeup Wave Form

(StandbyâActive)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.10 Power Down Wave Form

(ActiveâStandby)

www.rohm.com

Technical Note

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

5.0ms/div

Fig.2 Card Assert/De-assert

(Standby)

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.5 Wakeup Wave Form

(Card Assert)

SPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.8 Power Down Wave Form

(Card De-assert)

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

PERST#(2V/div)

500Î¼s/div

Fig.11 PERST# Wave Form

(Card Assert/ De-assert)

4/16

SYSR(2V/div)

V3(2V/div)

RV3AUX=13.2Î©

RV15=3Î©

V15(1V/div)

5.0ms/div

Fig.3 System ActiveâStandby

( Card Present)

CPUSB#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.6 Wakeup Wave Form

(USB2.0 Assert)

CPUSB#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Î¼s/div

Fig.9 Power Down Wave Form

(USB2.0 De-assert)

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

PLL_CLKREQ(2V/div)

5.0ms/div

Fig.12 PLL_CLKREQ# Wave Form

(Card Assert/ De-assert)

2010.04 - Rev.B

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