BD4157MUV Datasheet, PDF(6/25 Page) Rohm – Power Switch IC for ExpressCardTM

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BD4157MUV Datasheet, PDF (6/25 Pages) Rohm – Power Switch IC for ExpressCardTM

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BD4157MUV

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

PERST#(2V/div)

5.0ms/div

Fig.13 PERST# Wave Form

(Card Assert/ De-assert)

CPUSB#(2V/div)

V3(2V/div)

V3AUX(2V/div)

RCLKEN(2V/div)

5.0ms/div

Fig.16 RCLKEN Wave Form

(USB2.0 Assert/ De-assert)

V3_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Âµs/div

Fig.19 Output Voltage

(V3_IN:OFFâON)

V3_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

RV3=3.3Î©

RV3AUX=13.2Î©

V15(1V/div) RV15=3Î©

500Âµs/div

Fig.22 Output Voltage

(V3_IN:ONâOFF)

www.rohm.com

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

RCLKEN(2V/div)

5.0ms/div

Fig.14 RCLKEN Wave Form

(Card Assert/ De-assert)

PERST_IN#(2V/div)

V3(2V/div)

V3AUX(2V/div)

PERST#(2V/div)

1.0ms/div

Fig.17 PERST# Wave Form

(PERST_IN# Input)

V3AUX_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Âµs/div

Fig.20 Output Voltage

(V3AUX_IN:OFFâON)

V3AUX_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

RV3=3.3Î©

RV3AUX=13.2Î©

RV15=3Î©

500Âµs/div

Fig.23 Output Voltage

(V3AUX_IN:ONâOFF)

6/24

Technical Note

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

PERST#(2V/div)

5.0ms/div

Fig.15 PERST# Wave Form

(USB2.0 Assert/ De-assert)

PERST_IN#(2V/div)

V3(2V/div)

V3AUX(2V/div)

RCLKEN(2V/div)

1.0ms/div

Fig.18 RCLKEN Wave Form

(PERST_IN# Input)

V15_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500Âµs/div

Fig.21 Output Voltage

(V15_IN:OFFâON)

V15_IN(2V/div)

V3(2V/div)

V3AUX(2V/div)

RV3=3.3Î©

V15(1V/div)

RV3AUX=13.2Î©

RV15=3Î©

500Âµs/div

Fig.24 Output Voltage

(V15_IN:ONâOFF)

2011.06 - Rev.A

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