BD4154FV(2009) View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BD4154FV
(Rev.:2009)

Power Switch IC for ExpressCard™

ROHM Semiconductor 

BD4154FV

●Reference 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 Active⇔Standby

(No Card)

EN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500μs/div

Fig.7 Wakeup Wave Form

(Shut Down→Active)

CPUSB#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500µs/div

Fig.10 Power Down Wave Form

(USB2.0 De-assert)

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

Technical Note

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

5.0ms/div

Fig.2 Card Assert/De-assert

(Standby)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

RV3=3.3Ω

RV3AUX=13.2Ω

RV15=3Ω

V15(1V/div)

5.0ms/div

Fig.3 System Active⇔Standby

( Card Present)

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500μs/div

Fig.5 Wakeup Wave Form

(Card Assert)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500μs/div

Fig.8 Wakeup Wave Form

(Standby→Active)

EN(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500µs/div

Fig.11 Power Down Wave Form

(Active→Shut Down)

4/15

CPUSB#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500μs/div

Fig.6 Wakeup Wave Form

(USB2.0 Assert)

CPPE#(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

500µs/div

Fig.9 Power Down Wave Form

(Card De-assert)

SYSR(2V/div)

V3(2V/div)

V3AUX(2V/div)

V15(1V/div)

5.0ms/div

Fig.12 Power Down Wave Form

(Active→Standby)

2009.05 - Rev.A

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