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AN12945A Datasheet - Page 13

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AN12945A
Technical Data (continued)
Control sequence at power On/Off
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
At power on
1.
At power ON,as for the timing of each control pin, it much more recommends a procedure below the purpose of the pop
noise measure in changing.
Control sequence
1. Power supply (V
CCSP
2. Standby control: ON → OFF
3. SP power save control: ON → OFF
Control timing
V
(Pin 5)
CCSP
V
(Pin 14)
CC
Standby control
(Pin 13)
SP power save control
(Pin 12)
Power supply On
Note) *: The time to rise usually voltage, after standby control cancellation. It depend on the capacitance value of V
It is a recommendable value as for C=1.0uF.
): OFF → ON
, V
CC
Standby control cancellation
(Control voltage: Low → High)
SDF00041BEB
As for the occurrence of time-lag
between V
-On and V
-On,
CC
CCSP
no problem.
Until standby cancellation, wait for
V
and V
to rise usually
CC
CCSP
voltage.
Time-lag : more than 1.0 sec
*
SP power save cancellation
(Control voltage: Low → High)
and V
.
REF
REFSP
13

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