Ordering number: ENN6985 Monolithic Linear IC LA4636 For General Audio Use 11 W 2-Channel BTL AF Power Amplifier Overview Package Dimensions 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. unit: mm 3049B-SIP12H [LA4636] 26.8 4.0 (2.4) (11.8) 13.2max 6.0 (R1.7) 7.0 1 1.0min (8.4) (20.0) 12 2.0 0.5 0.4 1.0 2.0 Specifications SANYO: SIP12H Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage VCC max Maximum output current Allowable power dissipation Conditions Ratings Unit No signal 24 V Io peak Per channel 2.5 A Pd max Infinite heat sink 25 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –40 to +150 °C Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage Conditions VCC Recommended load resistance RL op Allowable operating voltage range VCC op *1 Ratings Unit 12 V 4 to 8 Ω RL = 8 Ω 5.5 to 20 V RL = 6 Ω 5.5 to 17 V RL = 4 Ω 5.5 to 13 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 = 25°C, VCC = 12 V, RL = 4 Ω, f = 1 kHz, Rg = 600 Ω Parameter Symbol Conditions min Quiescent current ICCO Standby current Ist Voltage gain VG Rg = 0 40 VO = 0 dBm 33 Total harmonic distortion THD PO = 1 W Output power P O1 P O2 THD = 10% THD = 10%, RL = 6 Ω Output noise voltage VNO Rg = 0, BPF = 20 Hz to 20 kHz Ripple rejection SVRR Channel separation CH Sep Input resistance 8 VN offset Standby pin voltage VST Mute pin voltage VM Mute attenuation ATTM max Unit 70 150 mA 0 10 µA 35 37 dB 0.06 0.2 11 9 0.14 % W W 0.3 mV Rg = 0, fR = 100 Hz, VR= 0 dBm 50 60 dB Rg = 10 kΩ, VO = 0 dBm 50 60 dB 14 20 Ri Output offset voltage Ratings typ 26 kΩ –300 +300 mV Amplifier on (pin 5 voltage) 2.5 10 V Mute on (pin 6 voltage) 1.5 3 V VO = 1Vrms, BPF = 20 Hz to 20 kHz 80 Rg = 0 90 dB Measurement Circuit Diagram LA4636 IN2 STBY MUTE VCC +OUT2 --OUT2 PWR GND --OUT1 +OUT1 1 2 3 4 5 6 7 8 9 10 11 12 + VCC Approximately 1.56V Imute 2kΩ 2kΩ 10µF 20kΩ 6 5V 0.1µF C9 0.1µF C6 0.1µF C7 0.1µF 2.2Ω R5 2.2Ω R2 2.2Ω R3 2.2Ω 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. ILA00774 Pin 6 Equivalent Circuit Inside IC 22kΩ Top view RL 1000µF 25V C5 Mute 5V R4 STBY 5V C8 10µF 10V + C4 + RL R1 22kΩ + C2 C3 + 4.7µF 16V PRE GND 4.7µF 16V IN1 47µF 25V C1 DC ILA00775 Signal Mute Function • Connecting a CR of the recommended value (10 µF, 22 kΩ) 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 µF capacitor also performs smoothing after the starting time, so it is necessary even if the signal mute function is not used. If a 22 kΩ external resistor is used, the pin 6 inflow current (Imute) will be approximately 160 µA 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. No. 6985-2/3 LA4636 Standby Function Pin 5 Equivalent Circuit Inside IC Approximately 1.4V ISTB=500µA or less 15kΩ 5 RSTB 1.5kΩ 30kΩ Standby Pin Voltage VSTB ILA00776 Pd max -- Ta Allowable power dissipation, Pd max – W 30 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 Infinite heat sink 25 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 µA. ISTB = 5 V – 1.4 V = 240 µA 15 kΩ 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 µA 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 kΩ RSTB = 500 µA 20 qjc=3°C / W 15 100 ¥ 100 ¥ 1.5 mm3 12.5 10 50 ¥ 50 ¥ 1.5 mm3 7 5 3.2 Single IC 0 --20 0 20 40 60 80 100 Ambient temperature, Ta – °C 120 140 160 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