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Ordering number : ENA5718
Monolithic Linear IC
LA4227
Overview
Audio Output for Radio Cassette Recorders
3W x 2ch Power Amplifier
LA4227 is a 3W 2-channel power amplifier. This IC requires few external components and is ideal for power amplifier used for radio cassette players/recorders.
Functions
* 3W x 2 channel (VCC = 9V, RL = 3) * Standby switch on chip * Thermal shutdown protector on chip Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Conditions Rg = 0 (No signal) Arbitrarily large heat sink Ratings 20 4.0 -20 to +75 -55 to +150 Unit V W C C
Operating Conditions at Ta=25C
Parameter Recommended supply voltage Operating voltage range Operating load resistance range Symbol VCC VCC op RL op Bridge Not exceeding the maximum ratings Conditions Ratings 9 4.2 to 18 3 to 8 8 unit V 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 usingany 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.
83006 / 42706 MS JK B8-7553, B8-4892, B8-3581 No.A5718-1/4
LA4227
Electrical Characteristics at Ta = 25C, VCC = 9V, RL = 4, f = 1kHz, Rg = 600, RNF = 43
Parameter Quiescent current Voltage gain Voltage gain difference Total harmonic distortion Output power Symbol ICCO VG VG THD PO1 PO2 PO3 Output noise voltage VNO1 VNO2 Channel separation Ripple rejection Standby current Input resistance Chsep SVRR Ist Ri 21 30 PO = 0.25W (VO = 1V) THD = 10% RL = 3, THD = 10% Bridge, RL = 8, THD = 10% Rg = 0, DIN AUDIO Rg = 10k, DIN AUDIO VO = 0dBm, Rg = 10k Vr= 150mV, Rg = 0, fr = 100Hz, DIN AUDIO 45 40 0.2 2.0 2.5 3.0 (4.7) 0.3 0.4 55 52 10 1.0 2.0 Rg = 0 VO = 0dBm Conditions min 10 43.0 Ratings typ 20 45.0 max 40 47.0 2.0 1.0 mA dB dB % W W W mV mV dB dB A k Unit
Package Dimensions
unit : mm 3022B
19.0 12 7
7.62 6.45
1
5.12 3.6
6 1.25
0.51min (3.46) 3.5 4.26max
(0.61) 2.54
0.5 3.81
1.3
SANYO : DIP12F(300mil)
0.4
No.A5718-2/4
LA4227
Block Diagram
Application Circuit Example
No.A5718-3/4
LA4227
Recommended board Cu-foiled pattern (Actual size)
25.0 10.7
8.7
53.0
25.0 10.7 12.0
8.7
8.0
fin 1
8.0
3.6
0.5
3.6
0.5
fin2
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 April, 2006. Specifications and information herein are subject to change without notice.
PS No.A5718-4/4

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