Ordering number : ENA4A LA4 Monolithic Linear IC Audio Output for TV application W ch Power Amplifier Overview LA4 is W -channel AF power amplifier intended for televisions. Functions W channels (, ) Standby function Pop noise reduction function Ripple filter Thermal protection circuit LA4 series is power IC which made Pin compatible altogether in to W. They consist of four kinds of power ICs (mono, stereo, mono with volume function, stereo with volume function. They realized PCB layout communalization of an audio power block of TV). Channel Model name P O Volume Monaural Stereo LA4 W LA4 W LA4 W LA4 W LA4 W LA4 W LA4 W 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. 4 MS PC//4 MS JK B- No.A4-/
LA4 Specifications Maximum Ratings at Ta = C Parameter Symbol Conditions Ratings unit Maximum supply voltage V CC max No signal 4 V Allowable power dissipation Pd max Infinitely heat sink W Maximum junction temperature Tj max C Thermal resistance θjc C/W Operating temperature Topr - to + C Storage temperature Tstg -4 to + C Operating Conditions at Ta = C Parameter Symbol Conditions Ratings unit Recommended supply voltage V CC V Recommended load resistance R L Ω Allowable operating voltage range V CC op. to V Electrical Characteristics at Ta = C,,, f = khz, Rg=Ω Parameter Symbol Conditions Ratings min typ max Standby current I STB Amplifier off μa Quiescent current I CCO Rg = ma Output power P O THD = % 4 W Total harmonic distortion THD P O = W..4 % Voltage gain VG V O = dbm db Output noise voltage V NO Rg =, BPF = Hz to khz.. mvrms Ripple rejection SVRR Rg =, f R = Hz, V CC R = dbm db Channel separation CH Sep. Rg = kω, V O = dbm db Standby control voltage V STB -H Amplifier on. V (The Pin voltage) V STB -L Amplifier off. V Input resistance Ri 9 kω Unit Package Dimensions unit : mm B C. (.)..4.. (.). (.9). min (.). (.).4max 4..4..4. min Allowable power dissipation, Pd max - W 4. Infinite heat sink..mm.mm. 4 No heat sink. Pd max - Ta Al heat sink Mounting Torque 9N cm Flat washer Silicone greas applird θj= C/W - 4 4 Ambient temperature, Ta - C SANYO : SIPH No.A4-/
LA4 Block Diagram Standby VCC Input amplifier Output amplifier IN OUT PRE GND REF amplifier Thermal protection circuit Power GND IN 4 OUT Input amplifier Output amplifier Ripple Filter Block Pop noise prevention Block Ripple Filter P.P Application Circuit Example LA4 Ripple Filter IN PRE GND PWR IN STB P.P V CC OUT N.C. GND N.C. OUT N.C. 4 9 C + C4 + C μf 4.μF μf /V C C /V /V + C 4μF + C 4μF * μf * μf + /V /V /V /V R L R L No.A4-/
External Components LA4 C, C : Input coupling capacitors, which are recommended to be.μf or less. The input pin voltage VBE ( about.4v). Determine the polarity orientation of these capacitors based on the DC current from the circuit connected to the LA4 front end. C : The recommended value for the Ripple filter capacitor is μf. C4 : The recommended value for the P.P capacitor 4.μF. It is a capacitor for there being small Pop sound. C : Power supply capacitor. C, C : The recommended value for the output capacitor is 4μF.. Standby Function (Pin ) By means of controlling pin to high and low, the power Supply can be set to ON and OFF. Control Voltage of pin Pin voltage Amplifier Standby to. OFF ON. to. ON OFF When the impression voltage of VS is high, I want to stop pin inflow current. Restriction resistance (RSTB) is inserted in a case. VS = V, RSTB =.kω pin inflow current = about µa pin voltage = about.v V S R STB kω kω. Ripple filter and Mute function (Pin ) Pin voltage is approx. / VCC The recommended value for the Ripple filter capacitor is µf. Muting : The output signal can be controlled by connecting pin (Ripple filter) to ground via a resistance of to Ω. If resistance is higher than Ω, the suppression ratio will decrease.. Input Pin (Pin,4) Voltage at the input pins is approx. VBE(about.4V) Determine the polarity orientation of these capacitors based on the DC current from the circuit Connected to the LA4 front end. Input resistance is approx. kω (typ) The recommended value for the input capacitor is.µf. 4. P.P (Pin ) The Pin is Terminal for there being small pop sound at the time of power supply ON/OFF. C4 recommends 4.µF. When capacitance is higher µf, the sound will not be cut off when setting the power supply OFF. kω VCC Pin voltage = V CC VCE (about.v).v +.V C4 + 4.μF kω No.A4-4/
LA4 Usage Notes. Lightening (power supply - output short-circuit) and ground fault (GND - output short-circuit) protective circuits are not incorporated. Due care must be taken during handling of the product.. The thermal protective circuit is incorporated and activated when the junction temperature (Tj) rises above about C. This circuit controls the output gradually to the attenuated condition.. Always ensure the sufficient margin for the supply voltage, etc. to operate the product within the area where the maximum rating will never be exceeded. Namely, the maximum rating may be exceeded due to the slight change in conditions, resulting in damage, if the product is used around the maximum rating. No.A4-/
LA4 Quiescent current, ICCO ma 4 Rg = ICCO VCC Output power, P O W 4 Rg = Ω f = khz THD = % PO VCC Total harmonic distortion, THD % Response db Output noise voltage, VNO mvrms 4 4 4 4 4 Supply voltage, V CC V Supply voltage, V CC V V CC = V Rg = Ω.... k k k Output power, PO W Frequency, f Hz 4 Response f 4 Rg = Ω VO = dbm (at f = khz) k k k k k k Frequency, f Hz Frequency, f Hz. V CC = V DIN AUDIO.. THD PO khz khz Hz VNO Rg k k k 4 4 4 Resistance for signal generation, Rg Ω Supply voltage, V CC V Total harmonic distortion, THD % Channel separation, CH Sep. db Ripple rejection ratio, SVRR db. 4 4 V CC = V Rg = Ω P O = W VO = dbm Rg = kω ch ch ch ch THD f CH Sep. f SVRR VCC Rg = Ω fr = Hz V CC R = dbm CV CC = μf No.A4-/
LA4 Ripple rejection ratio, SVRR db 4 SVRR fr Rg = Ω VCCR = dbm CVCC = μf Ripple rejection ratio, SVRR db 4 SVRR VCCR Rg = Ω fr = Hz CVCC = μf SVRR = log (VO/VCCR) k k..4....4... Ripple frequency, fr Hz Power supply ripple voltage, VCCR Vrms Pd PO Rg = Ω f = khz Power dissipation, Pd W 4. Output power, PO W 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,. Specifications and information herein are subject to change without notice. PS No.A4-/