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Ordering number: ENN6985
Monolithic Linear IC
LA4636
For General Audio Use 11 W 2-Channel BTL AF Power Amplifier
Overview
The LA4636 is a BTL power IC that is pin-compatible with the LA4635A and LA4635B single-end power ICs. It represents a new concept in devices of this type by allowing design editing based on common circuit board pin compatibility for products of different power ranks. The LA4636 also incorporates several protection circuits.
Package Dimensions
unit: mm 3049B-SIP12H
[LA4636]
26.8 (20.0)
4.0
7.0
1.0min
1 (2.4) 2.0 0.5 1.0 12
6.0
13.2max
(8.4)
(R1.7)
(11.8)
0.4 2.0
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Io peak Pd max Topr Tstg No signal Per channel Infinite heat sink Conditions
SANYO: SIP12H
Ratings 24 2.5 25 -20 to +75 -40 to +150
Unit V A W C C
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Recommended load resistance Allowable operating voltage range *1 Symbol VCC RL op VCC op RL = 8 RL = 6 RL = 4 Conditions Ratings 12 4 to 8 5.5 to 20 5.5 to 17 5.5 to 13 Unit V V V V
Set VCC, RL, and output level such that Pd max. is not exceeded for the size of heat sink used. *1: Assuming two-channel output with an IO peak per channel exceeding 1.0 A. If the IO peak per channel is 1.0 A or less, the allowable operating voltage range is 5.5 to 20 V (range not exceeding Pd max.) for all RL values.
Any and all SANYO 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 representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
70102RM (II) No. 6985-1/3
LA4636 Operating Characteristics at Ta = 25C, VCC = 12 V, RL = 4 , f = 1 kHz, Rg = 600
Parameter Quiescent current Standby current Voltage gain Total harmonic distortion Output power Output noise voltage Ripple rejection Channel separation Input resistance Output offset voltage Standby pin voltage Mute pin voltage Mute attenuation Symbol ICCO Ist VG THD P O1 P O2 VNO SVRR CH Sep Ri VN offset VST VM ATTM Rg = 0 Amplifier on (pin 5 voltage) Mute on (pin 6 voltage) VO = 1Vrms, BPF = 20 Hz to 20 kHz VO = 0 dBm PO = 1 W THD = 10% THD = 10%, RL = 6 Rg = 0, BPF = 20 Hz to 20 kHz Rg = 0, fR = 100 Hz, VR= 0 dBm Rg = 10 k, VO = 0 dBm 50 50 14 -300 2.5 1.5 80 90 8 33 Rg = 0 Conditions min 40 Ratings typ 70 0 35 0.06 11 9 0.14 60 60 20 26 +300 10 3 0.3 max 150 10 37 0.2 Unit mA A dB % W W mV dB dB k mV V V dB
Measurement Circuit Diagram
LA4636
PRE GND 3 PWR GND 10
DC 1
IN1 2
IN2 4
STBY 5
R1 22k
MUTE 6
VCC 7
+OUT2 8 RL
--OUT2 9
--OUT1 11 RL
+OUT1 12 Top view
+
C3
+
+
C2
+
C4
Mute 5V
C5
+
1000F 25V
Note: The LA4636 is basically pin-compatible with the LA4635, but there are partial differences in operation and usage, including with regard to externally connected parts.
4.7F 16V
4.7F 16V
47F 25V C1
10F 10V
0.1F
0.1F
0.1F
STBY 5V
2.2
2.2
2.2
VCC
2.2
R4
R5
R2
R3
0.1F
C6
C8
C9
C7
ILA00774
Pin 6 Equivalent Circuit Inside IC
Approximately 1.56V 22k 5V
10F
Imute 6
20k
2k
ILA00775
Signal Mute Function * Connecting a CR of the recommended value (10 F, 22 k) to pin 6 of the IC and applying +5 V turns signal mute on. This function mutes low-frequency popping noises. * The CR is for smoothing during attack and recovery. The 10 F capacitor also performs smoothing after the starting time, so it is necessary even if the signal mute function is not used. If a 22 k external resistor is used, the pin 6 inflow current (Imute) will be approximately 160 A when +5 V is applied. It is possible to change the external resistance value if the voltage applied is changed or to match the capacity of the microprocessor, but the popping noise level could rise if the pin 6 inflow current increases too much. It is therefore important to check the inflow current whenever the resistance value is changed.
2k
No. 6985-2/3
LA4636 Standby Function Pin 5 Equivalent Circuit Inside IC
ISTB=500A or less 15k 5 Standby Pin Voltage VSTB RSTB Approximately 1.4V
ILA00776
30
Pd max -- Ta
Infinite heat sink
AI heat sink Mounting torque 39N*cm F l a t wa s h e r S i l i c o n e gr e a s e applied
Allowable power dissipation, Pd max - W
The IC's pin 5 is the standby pin, and the amplifier turns on when approximately 2 V or more is applied to it. If +5 V is applied directly to pin 5 the inflow current of pin 5 is approximately 240 A. ISTB = 5 V - 1.4 V = 240 A 15 k If the microprocessor is used, an external current limiting resistor (RSTB) should be inserted if necessary (to reduce the inflow current). If a voltage other than that supplied by the microprocessor is applied, the pin 5 inflow current should be limited to 500 A or less using the applied VSTB value by calculating RSTB using the following equation and inserting a resistor if necessary. Applied Voltage (VSTB) - 1.4 V - 15 k RSTB = 500 A
30k
25
20
qjc=3C / W
15 12.5 10
100 100 1.5 mm3 50 50 1.5 mm3
7 5 3.2
Single IC
0 20 40 60 80 100 120 140 160
0 --20
Ambient temperature, Ta - C
ILA00777
Specifications of any and all SANYO 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 Electric 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 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 Electric 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 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 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 July, 2002. Specifications and information herein are subject to change without notice.
PS No. 6985-3/3
1.5k

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