Ordering number: ENN6984 Monolithic Linear IC LA4635B For General Audio Use 2-Channel BTL AF Power Amplifier Overview Package Dimensions The LA4635B is a 2-channel power IC that is pin-compatible with the LA4636. 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. It is compatible with VCC = 9 V and VCC = 12 V specifications and is available in two versions with different voltage gains (LA4635B with VG = 45 dB and LA4635A with VG = 35 dB). unit: mm 3049B-SIP12H [LA4635B] 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 SANYO: SIP12H Specifications 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 VCC Recommended load resistance RL op Allowable operating voltage range Conditions VCC op Ratings Unit 12 V 3 to 8 Ω 5.5 to 22 V * Set VCC, RL, and output level such that Pd max. is not exceeded for the size of heat sink used. 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. 6984-1/3 LA4635B Operating Characteristics at Ta = 25°C, VCC = 12 V, RL = 3 Ω, f = 1 kHz, Rg = 600 Ω Parameter Symbol Conditions min Quiescent current ICCO Standby current Ist Voltage gain VG Rg = 0 18 VO = 0 dBm 43 Total harmonic distortion THD PO = 1 W Output power P O1 P O2 THD = 10% VCC = 9 V, THD = 10% Output noise voltage VNO Rg = 0, BPF = 20 Hz to 20 kHz Ripple rejection SVRR Channel separation CH Sep Input resistance 3.0 2.0 max Unit 35 80 mA 1 10 µA 45 47 dB 0.25 0.8 4.5 2.5 0.15 % W W 0.5 mV Rg = 0, fR = 100 Hz, VR = 0 dBm 45 55 dB Rg = 10 kΩ, VO = 0 dBm 45 55 dB 20 30 Amplifier on (pin 5 voltage) 1.5 5.0 Ri Standby pin voltage Ratings typ VST 40 kΩ V Circuit Application Example LA4635B (Ripple Filter) DC IN1 1 PRE GND IN2 3 4 2 (Popping Noise Eliminator) STBY P.P VCC 5 6 OUT2 NC PWR GND NC OUT1 8 9 10 11 12 7 RL 1000µF 16V + 1000µF 25V 5V + RL 1000µF 16V + 4.7µF 16V + Rx + 1µF 50V + 1µF 50V 100µF 16V Top view + ILA00780 VCC (Reference) Pin 5 Equivalent Circuit Inside IC Rx Ix STBY R2 2kΩ 5 + R1 2kΩ Standby Pin Voltage Vx Ix=max 4.5mA ILA00781 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 20 qjc=3°C / W 15 100 ¥ 100 ¥ 1.5 mm3 * If voltage is to be applied to the Standby pin (pin 5), a resistor (Rx) should be inserted to limit the inflow current, as required. Please refer to the information below. • The amplifier can be turned on and off by controlling the level (high/low) of pin 5. • Applying a signal equal or greater than 1.5 V and 800 µA to pin 5 turns on the amplifier. (If 5 V is applied directly to pin 5 the inflow current of pin 5 is approximately 4.5 mA.) • If a voltage, Vx, exceeding 5 V is to be applied, current limiting resistor (Rx) should be inserted to limit the inflow current to 4.5 mA. (See following equation.) Rx = (Vx – 5 V) / 4.5 mA • If pin 5 is to be controlled by the microprocessor, the pin 5 inflow current (Ix) should be optimized for the capacity of the microprocessor by calculating Rx using the following equation, as a general guideline, and then confirming the inflow current through actual measurement. Rx = (Vx / Ix) – R1 (2 kΩ) 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 Note: The LA4635B is basically pin-compatible with the LA4636, but there are partial differences in operation and usage, including with regard to externally connected parts. No. 6984-2/3 LA4635B 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. 6984-3/3