Ordering number : ENA0741 Monolithic Linear IC LA42105 Audio Output for TV application BTL 5W × 1ch Power Amplifier Overview The LA42105 is a 5W 1-channel power amplifier IC and optimal for use as the audio output power amplifier in TV application Functions • 5W × 1 channels (VCC = 9.5V, RL = 8Ω, THD = 10%) • Built-in standby function. • Built-in mute function. • Built-in various protection circuit (short to power/short to ground/load shorting/thermal). Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol VCC max Conditions Ratings No signal V 30 W Allowable power dissipation Pd max Maximum output current IO peak 1.0 A Maximum junction temperature Tj max 150 °C 2.5 °C/W Thermal resistance Infinitely large heat sink Unit 16 θjc 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 Allowable operating supply voltage range VCC op Conditions Under conditions such that Ratings Unit 9.5 V 8 Ω 7 to 14 V maximum ratings are not exceeded 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. 53007 MS PC 20070308-S00002 No.A0741-1/7 LA42105 Electrical Characteristics at Ta = 25°C, VCC = 9.5V, RL = 8Ω, f = 1kHz, Rg = 600Ω Parameter Symbol Ratings Conditions min Standby current Ist Quiescent current Amplifier OFF ICCO Output power Rg = 0, RL = OPEN PO Total harmonic distortion Voltage gain 25 THD = 10% THD 4 PO = 1W VG VO = 0dBm max 0 10 μA 50 100 mA 5 0.2 % 32 34 dB 0.2 0.4 mVrms 30 VNO Ripple rejection ratio SVRR Rg = 0, fR = 100Hz, VCCR = 0dBm 40 50 ATT VO = 1Vrms, BPF = 20Hz to 20kHz 80 90 Mute ON *1 1.5 Mute control voltage (pin 7) Rg = 0, BPF = 20Hz to 20kHz Vmute Mute OFF Standby control voltage (pin 6) Vst Amplifier ON *1 dB dB 3.0 V 0 0.5 V 2.5 VCC V 0 0.5 V 39 kΩ Amplifier OFF Input resistance W 0.06 Output noise voltage Mute attenuation value Unit typ Ri 21 30 *1 : Note that the standby pin (pin 6) and MUTE pin (pin 7) incorporate the anti-electrostatic diode allowing the current to flow through the diode when the potential of VCC (pin 9) decreases below that of pin 6 or 7. Package Dimensions unit : mm (typ) 3336 21.6 HEAT SPREADER (20.0) 3.0 (11.0) (11.0) 3.35 12.4 (9.05) (14.55) 17.9 (8.6) (R1.75) 1 (1.91) 0.4 15 1.27 0.7 2.54 2.54 Allowable power dissipation, Pd max – W 40.0 30.0 20.0 Pd max – Ta Aluminum heat sink mounting conditions Tightening torque : 39N.cm silicone grease applied Infinitely large heat sink θjc = 2.5°C/W 5°C/W heat sink 16.7 10°C/W heat sink 10.0 20°C/W heat sink 5.6 0 – 20 0 20 40 60 80 100 120 140 Ambient temperature, Ta – °C SANYO : HZIP15 No.A0741-2/7 LA42105 Block Diagram Standby VCC 6 9 Input amplifier 14 +OUT1 IN1 3 Output amplifier Ri= 30kΩ 13 -OUT1 MUTE 7 VCC/ground shorting protection circuit Load shorting protection circuit Thermal protection circuit PRE GND 4 PWR 11 GND 2 Ripple Filter Test Circuit LA42105 GND (H.S) 1 Ripple Filter 2 IN PRE GND N.C. 3 4 5 STBY MUTE 6 + C2 100μF /25V C1 0.47μF 7 R1 15kΩ VCC N.C. PWR GND N.C. 9 10 11 12 8 + C3 10μF /6.3V -OUT1 +OUT1 13 GND (H.S) 14 15 RL = 8Ω + +5V C5 470μF /25V C4 0.1μF +VCC * Pin 8 : This pin must be left open. * Pins 1 and 15 are connected to the heat sink. They must be connected to power and ground. Pin Voltage Conditions : VCC = 9.5V, STBY = 5V Pin No. 1 2 3 4 5 6 7 8 11 12 GND (H.S) 0 Ripple Filter 9.2 IN Pre GND 0 N.C. STBY Mute N.C. 9 VCC 10 Pin N.C. N.C. - 5 0 - 9.5 - Power GND 0 Pin voltage (V) 0.7 - 13 14 15 -OUT1 +OUT1 GND (H.S) 4.8 4.8 0 No.A0741-3/7 LA42105 External Components C1 C2 C3, R1 C4 C5 : Input coupling capacitors. A value of 0.47μF is recommended. The input pin potential is 0.7V. : Capacitor which sets the starting time of the ripple filter and amplifier. A value of 100μF is recommended. : Capacitor and resistor for muting function. C3 is necessary even when the mute function is not used. : This capacitor increases the oscillator margin. We recommend a value of 0.1μF. : Power supply capacitor. 1. Muting function (pin 7) The muting function is turned on when the pin 7 voltage is 1.5V (minimum) or higher. The VM applied voltage is set so that the pin 7 voltage will be 1.5V or higher. The muting time constant is determined by an C3, R1 circuit, and the component values must be determined by a careful analysis, since they are related to impulse noise that occurs when the muting function is turned on or off. Also note that since C3 affects the occurrence of impulse noise when the amplifier is turned on or off, it will be required if the muting function is not used. Mute VCC R1 15kΩ 1kΩ VM 2kΩ 7 C3 + 10μF /6.3V 20kΩ 7.5kΩ 2. Standby function (pin 6) The amplifier is turned on by applying a level of 2.5V (minimum) or higher to pin 6. Pin 6 control voltage Pin 6 voltage Amplifier Standby 0 to 0.5 Off On 2.5 to VCC On Off The limit resistor RSTB may be inserted if the VSTB applied voltage is comparatively high and there is a need to suppress the pin 6 sink current. Standby VCC 2VBE VS RSTB 15kΩ 6 30kΩ 1.5kΩ No.A0741-4/7 LA42105 Usage Notes 1. This IC includes three short circuit protection circuits : shorting to power (shorts between an output and the power supply), shorting to ground (shorts between an output and ground), and load shorting protection circuits. These protection circuits operate while the corresponding abnormal condition continues, and recover automatically when the abnormal condition is resolved. There are, however, cases where, due to IC usage conditions, one of these protection circuits may lock and continue operating after the problem has been resolved. If this occurs, the protection circuit state can be reset by either switching the IC to standby mode or by temporarily cutting power from the IC. 2. This IC includes a thermal protection circuit that operates if the junction temperature (Tj) rises to 160°C or higher. This circuit gradually reduces the output level. 3. If this IC is operated in the vicinity of any of its maximum ratings, even slight changes in operating conditions could result in a maximum rating being exceeded. Since this could lead to the destruction of the IC, end product designs must include adequate margins in the supply voltage and other parameters so that the IC is always used within ranges such that the maximum ratings are never exceeded. No.A0741-5/7 LA42105 ICCO – VCC 16 RL = open Rg = 0Ω VSTBY = 5V 14 80 Output power, PO – W Quiescent current, ICCO – mA 100 60 40 PO – VCC THD = 10% RL = 8Ω Rg = 600Ω f = 1kHz 12 10 8 6 4 20 2 0 6 8 10 12 14 16 0 6 18 8 3 2 THD – PO VCC = 9.5V RL = 8Ω Rg = 600Ω Total harmonic distortion, THD – % 10 7 5 1 7 5 kH z 3 2 0.1 7 5 z 1kH 100Hz 3 2 0.01 0.1 10 10 7 5 3 2 THD – f 1 7 5 3 2 0.1 7 5 3 2 0.01 2 3 5 7 2 1 3 5 7 10 10 2 3 5 7100 Output noise voltage, VNO – mVrms 0.5 0 Response – dB – 0.5 –1 – 1.5 –2 – 2.5 –3 VCC = 9.5V RL = 8Ω Rg = 600Ω VO = 0dBm (f = 1kHz) – 3.5 –4 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 SVRR – VCC 5 7100 2 3 5 7100k 5 7 10k 2 3 5 7100k 5 7 10k 2 3 0.4 0.3 0.2 0.1 0 RL = 8Ω Rg = 0 fr = 100Hz VCCR = 0dBm CVCC = 0.1μF – 30 – 40 – 50 – 60 – 70 6 2 3 VNO – Rg 0 10 5 7100k Ripple rejection ratio, SVRR – dB Ripple rejection ratio, SVRR – dB – 20 5 7100 VCC = 9.5V RL = 8Ω B.P.F = 20Hz to 20kHz 2 3 – 10 – 20 5 7 100 2 3 5 7 1k 2 3 Resistance for signal generation, Rg – Ω Frequency, f – Hz – 10 2 3 Frequency, f – Hz Response – f 0.5 0 14 VCC = 9.5V RL = 8Ω Rg = 600Ω PO = 1W Output power, PO – W 10 12 Supply voltage, VCC – V 10 Total harmonic distortion, THD – % Supply voltage, VCC – V SVRR – fr VCC = 9.5V RL = 8Ω Rg = 0 VCCR = 0dBm CVCC = 0.1μF – 30 – 40 – 50 – 60 – 70 8 10 12 14 Supply voltage, VCC – V 16 18 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7100k Ripple frequency, fr – Hz No.A0741-6/7 LA42105 4 Pd – PO 3 2 1 0 0.1 2 3 5 7 1 ATT – Mute Pin 10 VCC = 9.5V RL = 8Ω Rg = 600Ω f = 1kHz Pd = VCC×ICC-PO Mute attenuation value, Mute ATT – dB Allowable power dissipation, Pd – W 5 2 Output power, PO – W 3 5 7 10 0 – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 VCC = 9.5V RL = 8Ω Rg = 600Ω f = 1kHz VO = 1Vrms (VMUTE = 0V) B.P.F. =20Hz to 20kHz – 100 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Mute pin – V 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 May, 2007. Specifications and information herein are subject to change without notice. PS No.A0741-7/7