Ordering number : ENA0714 Monolithic Linear IC LA42205 Audio Output for TV application 5W × 2ch Power Amplifier Overview The LA42205 is a 5W 2-channel power amplifier IC and optimal for use as the audio output power amplifier in TV application Functions • 5W × 2 channels (VCC = 9.5V, RL = 8Ω) • Built-in standby function. • Built-in mute function. • Built-in various protection circuit (short to VCC/short to ground/load shorting/overheating). Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol VCC max Conditions Ratings No signal Unit 16 V W Allowable power dissipation Pd max Infinitely large heat sink 30 Maximum output current IO peak Per channel 1.0 A Maximum junction temperature Tj max 150 °C 2.5 °C/W Thermal resistance 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 20070205-S00003 No.A0714-1/7 LA42205 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 Rg = 0, RL = OPEN Output power PO1 THD = 10% Total harmonic distortion THD PO = 1W Voltage gain VG Output noise voltage VNO Ripple rejection ratio SVRR Channel separation CH.Sep Mute attenuation value 4 Vmute Vst Input resistance Ri 0 10 μA 70 140 mA 5 W 0.2 % 32 34 dB 0.2 0.4 mVrms 30 Rg = 0, fR = 100Hz, VCCR = 0dBm 40 50 dB Rg = 10kΩ, VO = 0dBm 50 60 dB VO = 1Vrms, BPF = 20Hz to 20kHz 80 90 dB Mute ON *1 1.5 3.0 0 0.5 V 2.5 VCC V Mute OFF Standby control voltage (pin 6) max 0.06 Rg = 0, BPF = 20Hz to 20kHz ATT Mute control voltage (pin 7) 35 VO = 0dBm Unit typ Amplifier ON *1 Amplifier OFF 0 21 30 V 0.5 V 39 kΩ *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.A0714-2/7 LA42205 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 10 +OUT2 IN2 5 Output amplifier Ri= 30kΩ 12 -OUT2 Input amplifier 2 Ripple Filter Test Circuit LA42205 GND (H.S) 1 Ripple Filter 2 IN1 PRE GND IN2 3 4 5 + C3 100μF /25V C1 0.47μF STBY MUTE 6 C2 0.47μF VCC +OUT2 7 R1 15kΩ 8 9 10 PWR GND -OUT2 -OUT1 +OUT1 11 12 13 14 GND (H.S) 15 RL = 8Ω + C4 10μF /6.3V RL = 8Ω + +5V C6 470μF /25V C5 0.1μF +VCC * Pin 8 : NC. 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 Pin GND (H.S) 0 Ripple Filter 9.2 IN1 Pre GND 0 IN2 STBY Mute N.C. 0.7 5 0 - Pin voltage (V) 0.7 9 10 11 12 13 14 15 VCC +OUT2 Power -OUT2 -OUT1 +OUT1 GND GND (H.S) 9.5 4.8 0 4.8 4.8 4.8 0 No.A0714-3/7 LA42205 External Components C1, C2 C3 C4, R1 C5 C6 : Input coupling capacitors. A value of 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. C4 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 C4, 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 C4 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 C4 + 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.A0714-4/7 LA42205 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.A0714-5/7 LA42205 ICCO – VCC 12 RL = open Rg = 0Ω VSTBY = 5V 120 10 Output power, PO – W Quiescent current, ICCO – mA 140 100 80 60 40 PO – VCC THD = 10% RL = 8Ω Rg = 600Ω f = 1kHz 8 6 4 2 20 0 6 8 10 12 14 16 0 6 18 8 10 7 5 3 2 THD – PO (ch1) VCC = 9.5V RL = 8Ω Rg = 600Ω 1 7 5 3 2 10kHz 0.1 7 5 1kHz 100Hz 3 2 0.01 0.1 2 3 5 7 2 1 3 10 5 7 10 7 5 3 2 THD – PO (ch2) 1 7 5 3 2 10kHz 0.1 7 5 1kHz 100Hz 3 2 0.01 0.1 10 2 3 THD – f ch2 ch1 0.1 7 5 –2 – 2.5 VCC = 9.5V RL = 8Ω Rg = 600Ω VO = 0dBm (f = 1kHz) 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k 10 2 3 5 7 100 Frequency, f – Hz 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k 2 3 5 7100k Frequency, f – Hz VNO – Rg 0 VCC = 9.5V RL = 8Ω B.P.F = 20Hz to 20kHz Channel separation, CH Sep. – dB Output noise voltage, VNO – mVrms 10 – 1.5 –4 0.01 0.3 ch2 ch1 0.1 0 10 7 ch2 –1 – 3.5 0.2 5 ch1 –3 3 2 0.4 3 – 0.5 3 2 5 7 100 2 1 0 1 7 5 2 3 7 Response – f 0.5 VCC = 9.5V RL = 8Ω Rg = 600Ω PO = 1W 10 5 Output power, PO – W Response – dB Total harmonic distortion, THD – % 3 2 14 VCC = 9.5V RL = 8Ω Rg = 600Ω Output power, PO – W 10 7 5 12 Supply voltage, VCC – V Total harmonic distortion, THD – % Total harmonic distortion, THD – % Supply voltage, VCC – V – 10 CH Sep. – f VCC = 9.5V RL = 8Ω Rg = 10kΩ VO = 0dBm – 20 – 30 – 40 – 50 – 60 ch1→ch2 ch2→ch1 – 70 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 Resistance for signal generation, Rg – Ω 5 7100k 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Frequency, f – Hz No.A0714-6/7 LA42205 SVRR – VCC 0 RL = 8Ω Rg = 0 fr = 100Hz VCCR = 0dBm CVCC = 0.1μF – 10 – 20 Ripple rejection ratio, SVRR – dB Ripple rejection ratio, SVRR – dB 0 – 30 – 40 – 50 ch1 and ch2 is similar – 60 – 10 – 20 SVRR – fr VCC = 13V RL = 8Ω Rg = 0 VCCR = 0dBm CVCC = 0.1μF – 30 – 40 ch1 and ch2 is similar – 50 – 60 – 70 – 70 6 8 10 12 14 16 10 2 3 5 7 100 Supply voltage, VCC – V ATT – Mute Pin 10 Allowable power dissipation, Pd – W Mute attenuation value, Mute ATT – dB 0 ch1 and ch2 is similar – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 VCC = 9.5V RL = 8Ω Rg = 600Ω f = 1kHz VO = 1Vrms (Mute pin = 0V) B.P.F. =20Hz to 20kHz – 100 0.5 0.6 0.7 0.8 0.9 1.0 Mute pin – V 1.1 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k Ripple frequency, fr – Hz 1.2 1.3 1.4 8 Pd – PO VCC = 9.5V RL = 8Ω Rg = 600Ω f = 1kHz Pd = VCC×ICC-2PO 6 Pd 4 2 0 0.1 2 3 5 7 1 2 3 5 7 10 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. 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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.A0714-7/7