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LA4525 Datasheet(PDF) 8 Page - Sanyo Semicon Device

Part # LA4525
Description  For Radio Cassette Recorders Dual AF Power Amplifier
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4525 Datasheet(HTML) 8 Page - Sanyo Semicon Device

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LA4525
PS No. 4022-8/8
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
• The voltage gain is fixed internally to 40dB in dual mode and 46dB in BTL mode. These values cannot be altered by
connecting external components.
• Phase correction capacitance (600pF/TOTAL) is incorporated in the internal stages. Oscillation damping components
(R and C) are also incorporated in the output pin circuits.
• Power consumption
Note that the 8-pin DIP does not have a heat dissipating surface and that the power dissipation ratings are critical. The
maximum power dissipation of the device is 1.25W, and 1.5W when the device is mounted on the recommended PCB.
The actual power dissipated depends on the supply voltage and the load conditions. Ensure that the device is kept within
its maximum rating. For AC supplies, transformer tappings may need to be adjusted to keep the device within
maximum ratings.
VCC
2
Pd max =
π2RL
+ ICCO × VCC
Note
For BTL mode operation, the value of RL used in the calculation should be 1/2 the actual value.
• If the speaker plug jacks short to ground when connected, a protection resistor should be inserted in the output line.
• If the device is operated at or near its rated values, these values can be exceeded by small changes in operating
conditions, leading to device breakdown. Accordingly, ensure that a safety margin is maintained so as not to exceed the
maximum ratings.
• Check the PCB surface after soldering to ensure that no pins have been accidentally shorted. Any short between pins
could cause poor operating characteristics or permanently damage the device when power is applied.
• If making the PCB, check the printed wiring to ensure that no feedback loops occur between input and output.
This catalog provides information as of April, 2008. Specifications and information herein are subject to
change without notice.


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