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LA4629 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
View to exact match
LA4629 Datasheet PDF : 6 Pages
1 2 3 4 5 6
Block Diagram
ch1
Input 9
RNf1
PRE GND 12
RNf2
LA4629
STBY
6
Standby SW
ch1 input
amplifier
Rf1
REF
amplifier
Rf2
VCC
2
Output
amplifier
TSD protector
ch1
3 Output
5 POWER GND
ch2
Input 10
ch2 input
amplifier
Pop noise prevention block
8
P.P
Pin Functions
1. Standby switch function (pin 6)
Output
amplifier
Ripple filter
7
Filter
ch2
1 Output
ILA00076
Applied standby
voltage Vx
Rx
STBY
6
+
The inflowing current at an
applied voltage of 1.5 V, i.e.
the point when the amplifier
turns on, is approximately
750 µA.
2 k
ILA00075
STBY pin applied voltage: 5 V
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of 4.7 k
STBY pin applied voltage: 12 V
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of 14 k(12 k).
STBY pin applied voltage: Other value (Vx)
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of (Vx - 1.5 V)/750 µA.
• If a microcontroller output signal is applied directly, insert a resistor in series
and adjust the current to a level optimal for the drive capability of the
microcontroller.
2. Input pins (pins 9 and 10)
The input pin voltage is about 2 VBE (1.4 V).
The input pin impedance is about 30 k.
• Although the recommended value for the input capacitor is 0.22 µF, the starting time can be modified by changing the
value of this capacitor. (The time from the point a voltage is applied to the standby pin to the point sound is emitted.)
Input capacitor 1.0 µF 2.2 µF 3.3 µF 4.7 µF 10 µF
Starting time (ts) 0.2 s 0.3 s 0.5 s 0.65 s 1.5 s
No.6502-3/6
 

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