LA4725 SANYO [Sanyo Semicon Device], LA4725 Datasheet - Page 3

• Manufacturer Part Number: LA4725
• Description: 2-Channel BTL Power Amplifier 30 W+30 W with Standby Switch for Car Stereos
• Manufacturer: SANYO [Sanyo Semicon Device]

OFF
Block Diagram and Sample Application Circuit
ON
+5V
2.2 F/6V
2.2 F/6V
10k
IN2
C1
R1
C4
This catalog provides information as of March, 1997. Specifications and information herein are subject to
change without notice.
1
3
4
6
No products described or contained herein are intended for use in surgical implants, life-support systems,
aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and
the like, the failure of which may directly or indirectly cause injury, death or property lose.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guarant-
eed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees
are made or implied regarding its use or any infringements of intellectual property rights or other rights of
third parties.
33 F/6V
100 F/16V
Pop noise
prevention
circuit
Not impose any responsibilty for any fault or negligence which may be cited in any such claim or
subsidiaries and distributors and all their officers and employees, jointly and severally, against any
and all claims and litigation and all damages, cost and expenses associated with such use:
litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of
their officers and employees jointly or severally.
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates,
+
Ripple
filter
Standby
SW
5
BIAS
circuit
2
+
–
+
–
C3
IN
IN
0.47 F/6V
Predriver
Predriver
Predriver
Predriver
+
7
C10
Power
Power
Power
Power
LA4725
Thermal
shutdown
Overvoltage/
surge protector
Load short
protector
Load short
protector
V CC
Output pin-to-V CC
short protector
Output pin-to-GND
short protector
Output pin-to-GND
short protector
Output pin-to-V CC
short protector
14
Power
GND2
13
12
11
10
9
8
(Polyester film
**
**
**
**
**
capacitor)
C5
OUT1
OUT1
OUT2
OUT2
R2
2.2
R3
2.2
R4
2.2
R5
2.2
C6
C7 0.1 F
C8 0.1 F
C9 0.1 F
No.5715-3/3
+
0.1 F
2200 F
–
+
–
+
V CC
A07429
R L
4
R L
4