BD4154FV_10 ROHM [Rohm], BD4154FV_10 Datasheet - Page 8

• Manufacturer Part Number: BD4154FV_10
• Description: Power Switch IC for ExpressCard
• Manufacturer: ROHM [Rohm]

●Timing Chart
BD4154FV
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Primary
OFF
Stand-by Status
ON Status
From ON to Stand-by Status
From Stand-by to ON Status
ON
ON
System Status
SYSR=L
CP#=H⇔L
SYSR=L
CP#=L
Auxiliary
OFF
ON
ON
V15=V3=OFF
System Status
V3AUX=OFF
SYSR=H⇔L
CP#=H
⇔
ExpressCard
SYSR=H
CP#=H
Asserted Before This
Asserted After This
ExpressCard
Power ON/OFF Status of ExpressCard
De-asserted
De-asserted
Don’t care
Asserted
SYSR=H
CP#=L
SYSR=H
CP#=L
CP#=H→L
SYSR=L→H
CP#=L→H
SYSR=H→L
TM
:SYSR=L
:SYSR=H
:SYSR=H→L
:SYSR=L→H
Module Status
TM
States Transition Diagram
V15=V3=ON
V3AUX=ON
8/15
Card Asserted Status
Card De-asserted Status
From De-asserted to Asserted Status
From Asserted to De-asserted Status
Primary(+3.3V and +1.5V)
SYSR=H→L
CP#=L
SYSR=L→H
CP#=L
TM
OFF
OFF
OFF
OFF
OFF
ON
Power Switch Status
Card Status
SYSR=L
CP#=L→H
V15=V3=OFF
V3AUX=ON
Auxiliary(3.3V Aux)
Technical Note
2010.04 - Rev.B
OFF
OFF
OFF
OFF
ON
ON
:CP#=L
:CP#=H
:CP#=H→L
:CP#=L→H