Ordering number : EN1463D Monolithic Linear IC LA4265 3.5W Monaural Power Amplifier Overview LA4265 is a 3.5W monaural power amplifier. Features * Minimum number of external parts required (No input capacitor, bootstrap capacitor required). * High output : 3.5W typ (VCC = 16V, RL = 8, THD = 10%). * Soft clip, causing little harmonic disturbance to radios. * Small pop noise at the time of power switch ON/OFF. * Built-in protector against abnormal modes (Thermal shutdown, overvoltage) Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Maximum supply voltage VCC max Maximum output current IO Peak Allowable power dissipation Pd max Operating temperature Storage temperature Conditions Ratings Unit 25 V 2 A 7.5 W Topr -20 to +75 C Tstg -40 to +150 C With 100x120x1.5mm3 Al heat sink Operating Conditions at Ta = 25C Parameter Symbol Recommended supply voltage VCC Recommended load resistance RL Operating supply voltage range VCC Conditions Ratings Unit 16 V 8 9 to 24 V 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. 82008 MS JK/21500TH (KT)/33194HO/0237KI/8064KI/4034KI, TS No.1463-1/9 LA4265 Electrical Characteristics at Ta = 25C, VCC = 16V, RL = 8, f = 1kHz, Rg = 600, See specified test circuit (based on sample application circuit). Parameter Symbol Ratings Conditions min Quiescent current ICCO Voltage gain VG Qutput power PO THD = 10% Total harmonic distortion THD PO = 0.5W Output noise voltage VNO Rg = 10k, BPF = 20Hz to 20kHz Ripple rejection SVRR Rg = 0, fR = 100Hz, VR = 0.5V Unit typ max 35 50 mA 48 50 52 dB 3.0 3.5 40 W 0.3 1.0 % 0.65 1.5 mV 50 dB Package Dimensions unit : mm (typ) 3018B Allowable power dissipation, Pd max -- W 16.7 max 3.5 0.5 13.5 (8.4) 1.3 1.6 min 2.54 0.45 6 5 50 4 3 (1.17) 10 Al heat sink mounting torque 39N cm Silicone grease applied Thermal resistance between junction and outside air j-c 10C/W m m .5 x1 20 1 7 1 0x 3.6 Infinite heat sink 7.5 10 (R3.6) Pd max -- Ta 8 25.75 max 25.2 24.0 12.0 x5 0x 1.5 mm 3 3 2.5 No h 2 eat s ink 1 0 -20 0 20 40 60 80 100 120 140 160 Ambient temperature, Ta -- C 1.6 SANYO : SIP10FD Block Diagram decoupling 5 clipper diode 3 overvolt. protect. thermal protect. ripple filter 8 VCC input 10 feedback 9 56 input pre driver output 2 output 20k 6 7 phase phase comp comp 1 2 1 GND No.1463-2/9 LA4265 Sample Application Circuit 1 Sample Application Circuit 2 (Recommended circuit) (Circuit with minimum number of external parts) C6 + 100F /25V + 5 3 8 input 10 C1 330pF R1 100k + 2 LA4265 C2 100F/6.3V 7 1 C6 + 100F /25V C4 470F/16V + C3 0.1F * R2 3.3 9 6 VCC C5 470F /25V 5 V + C5 CC 470F /25V 3 8 input VR 30k 10 RL 8 2 LA4265 9 + 6 C2 100F/6.3V * polyester film cap. 7 1 C4 470F/16V + C3 0.1F * R2 3.3 RL 8 * polyester film cap. Sample Printed Circuit Pattern VCC 1 10 470F/16V + input output 330pF + 100F /6.3V 100F 25V + GND 100k + 470F /25V * 0.1F 3.3 GND Cu-foiled area 55x57.5mm2 * Polyester film capacitor f -- Sf Thermal resistance of heat sink, f -- C/W 5 Al heat sink t = 1.5mm 3 2 10 7 5 3 2 2 3 5 7 100 2 3 5 7 1000 2 Area of heat sink, Sf -- cm2 No.1463-3/9 LA4265 Description of External Parts C1 (330pF) : Input short capacitor. Reduces the high frequency noise when the input impedance is increased. Not required when the input impedance is decreased. C2 (100F) : Feedback capacitor. Decreasing the capacitance value lowers the low frequency response. Increasing the capacitance value makes the starting time later. C3 (0.1F : Oscillation blocking capacitor. polyester film Decreasing the capacitance value causes oscillation to occur easily. Use a polyester film capacitor that capacitor) is good in high frequency response and temperature characteristic. The use of an electrolytic capacitor may cause oscillation to occur at low temperatures. C4 (470F) : Output capacitor. Decreasing the capacitance value causes insufficient power at low frequencies. C5 (470F) : Power capacitor. Decreasing the capacitance value causes ripple to occur easily. Locating at a distance from the IC or removing this capacitor may cause oscillation to occur. C6 (100F) : Ripple filter capacitor. Decreasing the capacitance value excessively or removing this capacitor causes ripple to occur. However, increasing the capacitance value does not always cause ripple to be reduced. Decreasing the capacitance value makes the starting time earlier. R1 (100k) : Input bias resistor. Determines the bias (bias of zero potential) to be applied to the input pin and the input impedance. Not required if a variable resistor is also used as this resistor. R2 (3.3) : Resistor connected in series with oscillation blocking capacitor. Prevents phase shift attributable to the oscillation blocking capacitor so that oscillation is hard to occur. Note for Changing Voltage Gain The voltage gain can be reduced by adding an external resistor (RNF) in series with the feedback capacitor. (See VG * RNF characteristic curve). However, it should be noted that various characteristics are also changed (THD-VG, VNO-VG, Vro-VG). The voltage gain must not be reduced to be less than 30dB. Since the frequency response is extended and oscillation is liable to occur when the voltage gain is reduced, high-cut must be made as required. (High-cut is made by connecting a capacitor of approximately 30pF across pins (6) and (7).) External Muting If external muting is required, make the circuit as shown on next page. In this case, the pop noise is similar to that which occurs at the time of power switch ON/OFF. If the value of the series resistor is decreased, more pop noise is heard at the time of attack ; if increased, muting is hard to work. Measure against Fold-back of Output Waveform Since the input pin is zero-biased, the circuit may be saturated at an overinput, causing a part of the output waveform to be folded back (e. g. when the peak input voltage exceeds 600mV). In such a case, the fold-back of the waveform can be prevented by using the built-in diode (also can be prevented by using an external diode). When the built-in diode is used, a resistor must be connected in series with the input pin to cause the diode to conduct no overcurrent (10mA or less). No.1463-4/9 LA4265 Fold-back Output Waveform Fold-back of waveform External muting 200 VCC + 100F mute SW 5 1k 9 10 + 100F + 470F + 2 - 6 Gain adjusting resistor 470F ripple filter 8 Measure against fold-back + 3 7 0.1F polyester film capaciter 3.3 1 RNF RL 8 C High-cut capacitor PO -- VIN f = 1kHz RL = 8 6V 14V 12V =1 2 V CC Output power, PO -- W 3 1.0 7 5 3 2 0.1 7 5 3 2 5 7 2 1.0 3 5 7 2 10 3 5 THD -- PO 10 Total harmonic distortion, THD -- % 10 7 5 7 5 3 2 1.0 f = 10kHz 7 5 100Hz 1kHz 3 2 0.1 7 100 VCC = 16V RL = 8 2 3 5 7 0.1 Input voltage, VIN -- mV PO -- f 6 2 3 5 7 1.0 2 3 5 7 Output power, PO -- W PO -- VCC 8 VCC = 16V RL = 8 RL = 8 f = 1kHz 7 0 F 1 % 10 3 5% 2 4 = 5% C 5 D 3 THD = 105% TH 0 00 1 4= F Output power, PO -- W 6 4 47 Output power, PO -- W 5 2 1 0 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Frequency, f -- Hz 2 3 5 7 100k 0 0 4 8 12 16 20 24 Supply voltage, VCC -- V No.1463-5/9 LA4265 THD -- f 10 5 0 Response -- dB - C6 3 -7 3 7= -6 30pF F 0p 5 F pF 20 7 -4 20p 10pF 1.0 -8 -10 2 No 7 6- -12 C -14 0.1 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7 100k 2 3 5 7 100 2 3 Frequency, f -- Hz 5 7 1k f Response 0 Power dissipation, Pd -- W 20 F =2 100 F C2 -6 -8 -10 5 7 10k 2 3 5 7 100k Pd -- PO RL = 8 f = 1kHz 20V 18V 2V 3 47F Response -- dB 5 VCC = 16V RL = 8 -2 2 3 Frequency, f -- Hz 2 -4 C6 2 No -2 3 pF 10 Total harmonic distortion, THD -- % 7 f Response 2 VCC = 16V RL = 8 PO = 0.5W V CC 2 =2 16V 14V 1.0 7 5 -12 -14 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 3 2 5 7 100k 3 5 7 0.1 2 Frequency, f -- Hz ICC -- PO 1.0 5 7 1.0 2 3 5 7 10 Vpin -- VCC 40 VCC = 16V RL = 8 7 5 30 Pin voltage, Vpin -- V Current dissipation, ICC -- A 3 Output power, PO -- W 3 2 0.1 20 Pin Pins 10 7 (5) (2), (6) 5 2 3 5 7 2 0.1 3 5 7 2 1.0 3 0 5 0 4 Output power, PO -- W 8 12 16 20 Output noise voltage, VNO -- mV 40 30 20 10 0 8 12 16 20 24 Supply voltage, VCC -- V 32 36 VCC = 16V RL = 8 BW = 20Hz to 20kHz 5 3 No 2 28 32 36 C1 With C1 1.0 T ER 7 T FIL OU 5 TE FIL 3 4 28 VNO -- Rg 10 7 0 24 Supply voltage, VCC -- V ICCO -- VCC 50 Quiescent current, ICCO -- mA Pin (6) Pins (7), (9) 3 2 2 3 5 7 1k 2 3 RI N 5 7 10k 2 3 5 7100k Signal source resistance, Rg -- 2 3 5 7 1000k No.1463-6/9 LA4265 VRO -- VCCR 5 2 Output ripple voltage, VRO -- mV Output ripple voltage, VRO -- mV 3 10 7 5 3 2 1.0 7 5 3 2 2 5 7 10 2 3 5 7 100 2 3 5 7 1000 fR = 100Hz Rg = 0 100 7 5 3 2 10 7 5 VCCR = 1V 3 2 0.5V 0.3V 1.0 7 5 3 2 3 VRO -- VCC 3 2 VCC = 16V Rg = 0 fR = 100Hz 2 3 4 8 12 Supply ripple voltage, VCCR -- mV VG -- RNF VCC = 16V RL = 8 f = 1kHz Voltage gain, VG -- dB 50 20 24 28 40 30 20 10 THD -- VG 2 Total harmonic distortion, THD -- % 60 16 Supply voltage, VCC -- V VCC = 16V RL = 8 f = 1kHz 1.0 7 5 3 2 W PO 0.1 =2 W 0.5 7 5 3 0 2 3 5 7 10 2 3 5 7 100 2 3 5 7 1k 2 20 2 3 30 THD -- f 10 7 5 VCC = 16V RL = 8 PO = 0.5W 3 2 1.0 7 5 3 VG = 50dB 2 45dB 40dB 35dB 0.1 7 5 1.0 7 3 2 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7 100k 5 VNO -- VG 0.5V 2 1.0 7 5 0.3V 3 2 10 20 30 40 Voltage gain, VG -- dB k g= 10 R FILTE 0 R OUT 3 2 0.1 7 N RI 5 TE FIL 3 10 20 30 40 50 60 50 ICCO -- Ta 60 VCC = 16V RL = 8 fr = 100Hz Rg = 0 Quiescent current, ICCO -- mA Output ripple voltage, VRO -- mV 3 60 Voltage gain, VG -- dB VRO -- VG VC CR = 50 VCC = 16V RL = 8 BPF = 20Hz to 20kHz Frequency, f -- Hz 5 40 Voltage gain, VG -- dB Output noise voltage, VNO -- mV Total harmonic distortion, THD -- % External feedback resistor, RNF -- 60 Quiescent 50 VC = C 25V 40 14V 30 22V 16V 20 10 0 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient temperature, Ta -- C No.1463-7/9 LA4265 PO -- Ta THD,VG -- Ta 4 THD = 10% 3 5% Total harmonic distortion, THD -- % 5 Output power, VO -- W 1.0 VCC = 16V RL = 8 f = 1kHz 2 1 0 -30 -20 -10 0 10 20 30 40 50 60 70 80 0.9 0.8 VCC = 16V RL = 8 f = 1kHz 48 0.6 47 0.5 46 0.4 0.3 THD 0.2 0.1 -20 -10 0 10 20 30 40 50 60 70 Ambient temperature, Ta -- C Ambient temperature, Ta -- C Pop noise waveform at the time of power switch ON (VCC = 16V, RL = 8, quiescent) Pop noise waveform at the time of power switch OFF (VCC = 16V, RL = 8, quiescent) 1 80 1 Pop noise waveform 0 Pop noise waveform 0 -1 -1 8 eform e wav int ris le po Midd 6 V/div V/div 49 0.7 0 -30 90 50 VG Voltage gain, VG -- dB 6 8 6 4 4 2 2 Middle point fall wa veform 0 S/div S/div 0 on f = 1kHz clip waveform (VCC = 16V, RL = 8, THD = 5%) off f = 10kHz clip waveform (VCC = 16V, RL = 8, THD = 5%) Proper Cares in Using IC * Maximum ratings If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum ratings to be exceeded, thereby leading to breakdown. Allow an ample margin of variation for supply voltage, etc. and use the IC in the range where the maximum ratings are not exceeded. * Pin-to-pin short If power is applied when the space between pins is shorted, breakdown or deterioration may occur. When mounting the IC on the board or applying power, make sure that the space between pins is not shorted with solder, etc. * When used in radio applications When using in radios, allow a sufficient space between IC and bar antenna. No.1463-8/9 LA4265 * Printed circuit pattern When designing the printed circuit pattern, make the power supply, output, and ground lines thick and short and arrange the pattern and parts so that no feedback loop is formed between input and output. Place power capacitor C5, oscillation blocking capacitor C3 as close to IC pins as possible to prevent oscillation from occurring. Refer to the sample printed circuit pattern. * Some plug jacks to be used for connecting to the external speaker can have the both poles short-circuited once when connecting. In this case, the load is short-circuited, which may break down the IC. 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 August, 2008. Specifications and information herein are subject to change without notice. PS No.1463-9/9