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Ordering number : EN5725
Monolithic Linear IC
LA4285
Overview
Audio Output for TV application
3W Monaural Power Amplifier
The LA4285 is a 3W monaural power amplifier IC. The LA4285 features a built-in electronic volume control circuit and only requires a minimal number of external components and thus is optimal for use as the audio output power amplifier in TV sets.
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Functions
* 3W monaural power amplifier (VCC = 16V, RL = 8) * Electronic volume control circuit * Input selector switch
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Thermal resistance Operating temperature Storage temperature Symbol VCC max Pd max j-c Topr Tstg Conditions Rg = 0 (No signal) With a infinity large heat sink Ratings 24 7.0 10.0 -20 to +75 -40 to +150 Unit V W C/W C C
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Recommended load resistance Symbol VCC RL Conditions Ratings 16 8 Unit V
Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein.
N1506 MS PC B8-2419 No.5725-1/3
LA4285
Electrical Characteristics at Ta = 25C, VCC = 16V, RL = 8, f = 1kHz
Parameter Quiescent current Voltage gain Total harmonic distortion Output noise voltage Output power Maximum attenuation Input resistance Symbol ICCO VG THD VNO PO ATT Ri Rg = 0, V5 = 0V VO = 0dBm, V5 = 5V PO = 1W, V5 = 5V Rg = 0, V5 = 0V, DIN AUDIO THD = 10%, V5 = 5V VIN = 100mVrms, V5 = 0V, DIN AUDIO 2.5 -70 30 Conditions min 18 32.0 Ratings typ 35 34.0 0.6 0.05 3.0 -80 40 50 max 70 36.0 1.2 0.5 mA dB % mV W dBm k Unit
Package Dimensions
unit : mm (typ) 3046D
8
Pd max -- Ta
Infinity large heat sink (jc=10C/W)
7.00
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25.2 24.0 3.6 3.6
Allowable power dissipation, Pd max - W
6
50x50x1.5mm3
4
5.00
16.7 max
3.00 2
(8.4)
14.0
No heat sink
1.94 1.16
(1.17)
2.54
1.3
0.5
3.5
1
10
1.6 min
0 --20
0
20
40
60
80
100
0.45
1.6
Ambient temperature, Ta - C
SANYO : SIP10F
No.5725-2/3
LA4285
Block Diagram
VCC
+ 1000F
10
A DC VOL B AMP
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1 + 1F EXT + 1F
2
3
4 +5V
5
6
7
8
9 POWER OUT + 0.1F 100F
INT
PRE GND
INT/EXT SW 10F
+
+ 47F 1.0
DC VOL
D.C
NF
POWER GND
Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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. In the event that any or all SANYO Semiconductor products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission of SANYO Semiconductor Co., Ltd. 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 product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor 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.
This catalog provides information as of November, 2006. Specifications and information herein are subject to change without notice. PS No.5725-3/3

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