Ordering number : EN6501A LA4627 Monolithic Linear IC 2-Channel AF Power Amplifier Overview The LA4627 is a 2-channel power amplifier developed for use in radio/cassette player products. The LA4627 reduces the number of required external components by 50% over earlier products (BS/NF capacitors and oscillation prevention RC components) and thus can contribute significantly to space saving in end products. Features * Provided in the DIP12F. * PO : 2.0Wx2 (VCC = 9V, RL = 4) 2.5Wx2 (VCC = 9V, RL = 3) * Standby function built in (supports direct microcontroller control). * Built-in thermal protection circuit. Specifications Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max Rg = 0 22 V Allowable power dissipation Pd max When mounted on the Sanyo-recommended PCB 4.0 W Operating temperature Topr -25 to +75 C Storage temperature Tstg -55 to +150 C Ratings Unit Operating Conditions at Ta = 25C Parameter Symbol Conditions Recommended supply voltage VCC 9 V Recommended load resistance RL 3 Operating voltage range VCC op Recommended operating load resistance RL op Under conditions such that the maximum ratings are not exceeded. 5.0 to 20 V 2.7 to 8.0 Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. O0808 MS JK/42000 RM (IM) No.6501-1/7 LA4627 Electrical Characteristics at Ta = 25C, VCC = 9V, RL = 3, f = 1kHz, Rg = 600 Ratings Parameter Symbol Quiescent current Conditions min typ Unit max ICCO Rg = 0 17 30 Voltage gain VG VO = 0dBm 43 Total harmonic distortion THD PO = 0.33W (VO = 1.0V) Output power PO1 THD = 10% PO2 THD = 10%, RL = 4 Output noise voltage VNO Rg = 0, DIN AUDIO Ripple rejection ratio SVRR Rg = 0, fR = 100Hz, Vr = 0dBm, DIN AUDIO 45 52 dB Channel separation CHsep Rg = 0, VO = 0dBm, DIN AUDIO 50 60 dB Standby current IST Rg = 0 Input resistance Ri Standby pin voltage VST 2.0 70 mA 45 47 dB 0.1 0.8 2.5 2.0 0.15 The pin 1 voltage such that the amplifier is on % W W 0.5 mVrms 1.0 10 A 20 30 40 k 1.5 5.0 V Package Dimensions unit : mm (typ) 3022B Pd max -- Ta Allowable power dissipation, Pd max -- W 7 6.4 Copper heat sink (Fin 1) 6 5.7 Steel heat sink (Fin 1) 4.9 Steel heat sink (Fin 2) 5 4 Mounted on the recommended printed circuit board. 4.0 3 2 1.9 Independent IC 1 0 -20 0 20 40 60 80 Ambient temperature, Ta -- C 25.0 8.7 25.0 53.0 10.7 8.7 3.6 Fin 1 0.5 8.0 8.0 12.0 10.7 3.6 0.5 Fin 2 No.6501-2/7 LA4627 Block Diagram STBY VCC 1 12 Standby SW ch1 Input 7 Output amplifier ch1 input amplifier 11 ch1 Output Rf1 RNf1 PRE GND REF amplifier 4 RNf2 ch2 Input Fin POWER GND TSD protector Rf2 Output amplifier ch2 input amplifier 6 Pop noise prevention block 2 ch2 Output Ripple filter 9 8 P.P Filter 1000F POWER GND RL 12 11 10 Fin VCC OUT1 + 9 8 7 DC (R.F) IN1 1000F 1F + input 1 + input 2 LA4627 PRE GND STBY OUT2 *Rx 4.7k STBY +5V + P.P VCC + 100F + output 1 4.7F Application Circuit Example 1 2 3 Fin 4 IN2 5 6 1F output 2 + 1000F RL Top view Pins 3, 5, 10 must be left open. * Rx : If the STBY pin (pin 1) is used, observe the following : Insert the resistor Rx in series to limit the inflowing current. (The amplifier will be on when a voltage is applied to pin 1.) No.6501-3/7 LA4627 Pin Functions 1. Standby switch function (pin 1) Rx STBY 2k Applied standby voltage Vx + The inflowing current at an applied voltage of 1.5V, i.e. the point when the amplifier turns on, is approximately 750A. 2k 1 STBY pin applied voltage : 5V To hold the pin 1 inflow current to about 750A insert a resistor (Rx) of 4.7k STBY pin applied voltage : 12V To hold the pin 1 inflow current to about 750A insert a resistor (Rx) of 14k (12k). STBY pin applied voltage : Other value (Vx) To hold the pin 1 inflow current to about 750A insert a resistor (Rx) of (Vx - 1.5V)/750A. * If a microcontroller output signal is applied directly, insert a resistor in series and adjust the current to a level optimal for the drive capability of the microcontroller. 2. Input pins (pins 6 and 7) The input pin voltage is about 2VBE (1.4V). The input pin impedance is about 30k. * Although the recommended value for the input capacitor is 0.22F, the starting time can be modified by changing the value of this capacitor. (The time from the point a voltage is applied to the standby pin to the point sound is emitted.) Input capacitor Starting time (ts) 1.0F 2.2F 3.3F 4.7F 10F 0.2s 0.3s 0.5s 0.65s 1.5s No.6501-4/7 LA4627 3. FILTER (decoupling) pin (pin 8) The pin voltage is about 1/2VCC. The recommended value for the filter capacitor is 100F. The pulse noise that occurs when the standby pin is set low (power off) will be degraded if a value under 100F is used. AC voltage (100mV) AC voltage (200mV) Output DC voltage Output DC voltage Filter capasitor = 100F Filter capasitor = 47F 4. P.P (pulse noise) pin (pin 9) VCC * The recommended value for the P.P capacitor is 4.7F. The pulse noise that occurs when the standby pin is set low (power off) will be degraded if a value under 2.2F is used. Furthermore, if a value over 10F is used, the signal may not be cut off and sound may remain audible when the standby pin is set low (power off). 5k VCC - VCE (about 0.3V) - 5.6V + 5.6V 2k 9 5k Pin 9 pin voltage Zener voltage =5.6V To the input amplifier block/bias system 5. MUTE (Muting) The output signal can be controlled by shifting the pin 8 (FILTER) level towards ground with a 300 to 500 resistor. However, note that the degree of suppression is reduced if a value of 750 or more is used. Output AC voltage Output DC voltage Mute ON Mute OFF No.6501-5/7 LA4627 PO -- VCC 10 ICCO -- VCC 140 f = 1kHz THD = 10% Rg = 0 RL = 3 Quiescent current, ICCO -- mA 120 4 R L= Output power, PO -- W 8 6 =3 RL 4 RL =8 2 100 80 60 40 20 6 8 10 12 14 16 18 0 0 20 2 4 6 THD -- f 2 1.0 7 5 3 2 0.1 7 5 3 2 0.01 10 2 3 5 7100 2 3 5 7 1k 2 3 5 710k 2 3 -20 -30 -40 1 CH2 2 1 CH -70 2 3 5 7 1k 2 3 Frequency, f -- Hz 2 3 -2 -4 -6 -8 -10 10 2 3 5 7100 2 3 5 7 1k 2 3 Frequency, f -- Hz 24 VCC = 9V RL = 3 2 3 5 7 2 1.0 3 5 7 10 SVRR -- fR VCC = 9V RL = 3 Rg = 0 Vr = 150mVrms DIN/AUDIO -10 -20 -30 -40 -50 -60 -70 10 5 7100k VCC = 9V RL = 3 VO = 0dBm VG = 45.5dB 0 22 0.1 7 5 3 2 2 3 5 7 100 5 7 10k 2 3 5 7100k 2 3 5 7 1k 2 3 5 7 10k Ripple frequency, fR -- Hz f -- Response 2 Response -- dB 5 7 10k VNO -- Rg 1.0 Output noise voltage, VNO -- mVrms Channel separation, CHsep -- dB -10 5 7100 20 f = 10kHz 1.0 7 5 3 2 0 Ripple rejection ratio, SVRR -- dB VCC = 9V RL = 3 VO = 0dBm Rg = 10k 2 3 18 10 7 5 3 2 CHsep -- f -80 10 16 Output power, PO -- W 0 -60 14 THD -- PO 100 7 5 3 2 0.01 0.1 5 7100k Frequency, f -- Hz -50 12 z VCC = 9V RL = 3 VO = 1Vrms 3 10 100H 10 7 5 8 Supply voltage, VCC -- V Total harmonic distortion, THD -- % Total harmonic distortion, THD -- % Supply voltage, VCC -- V 1kHz 0 4 VCC = 9V RL = 3 DIN/AUDIO 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1k 2 3 5 7 10K 2 3 Signal source resistor, Rg -- 5 7 100K No.6501-6/7 LA4627 Pd -- PO Power dissipation, Pd -- W 5 f = 1kHz Pd = VCCxICC-2xPO 4 3 L V/R V CC =9 2 /RL VCC =3 = 9V = 4 1 0 0.1 2 3 5 7 1.0 2 Output power, PO -- W 3 5 7 10 SANYO Semiconductor Co.,Ltd. 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 Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent 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 Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of October, 2008. Specifications and information herein are subject to change without notice. PS No.6501-7/7