LA4282 Audio Power Amplifier Class AB, 10W × 2-Channel Overview The LA4282 is the IC for 2-channel SE power amplifier that is developed for TVs and monitors audio system. High power and low distortion are realized. This IC incorporate various functions (muting function, and various protection circuit) necessary for audio system. www.onsemi.com Features High-power 2-channel AF power amplifier Low distortion Minimum number of external parts required (no bootstrap capacitor required) Low pop noise at the time of power supply ON/OFF Good ripple rejection (58dB typ) Wide operating voltage range External muting available On-chip protector against abnormality (thermal shutdown, overvoltage) SIP12 26.8 mm x 11.8 mm GENERIC MARKING DIAGRAM* XXXXXXXXXX YMDDD Typical Applications Home Stereo TV SPECIFICATION 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 Conditions XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data (Note 1) Ratings Unit Quiescent 45 4 A With heat sink 25 W 20 to 75 C Topr V Storage temperature 40 to 150 C Tstg 1. Stresses exceeding those listed in the Absolute Maximum Rating table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. RECOMMENDED OPERATING RANGE at Ta = 25C Parameter Recommended supply voltage Symbol Conditions Ratings VCC op Unit 32 V 10 to 40 V Recommended load resistance 8 RL 2. Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. © Semiconductor Components Industries, LLC, 2015 July 2015- Rev. 0 1 Ordering Code: LA4282-E Package SIP12 (Pb-Free / Halogen Free) Shipping (Qty / packing) 20 / Fan-Fold (Note 2) VCC ORDERING INFORMATION † For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF Publication Order Number: LA4282/D LA4282 ELECTRICAL CHARACTERISTICS at Ta 25C, VC = 32V, RL = 8Ω, f = 1kHz, Rg = 600Ω, See Test Circuit. Parameter Quiescent current Voltage gain Voltage gain difference Output power Symbol Conditions (Note3) Ratings min typ Unit max ICCO (1) Quiescent 30 60 100 mA ICCO (2) Muting switch On 30 56 100 mA 38 40 VG VG PO (1) THD = 1% 9.0 10.0 10.0 11.5 42 dB 1.5 dB W PO (2) THD = 3% Total harmonic distortion THD PO = 2W 0.05 0.20 % Output noise voltage VNO Rg = 10k, BW = 20Hz to 20kHz 0.25 1.0 mV Ripple rejection Crosstalk SVRR CT W Rg = 10k, fR = 100Hz, VR = 0dBm 45 58 dB Rg = 10k 45 60 dB Muting Muting switch On, VIN = 5dBm 35 dBm VO (MT) 3. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. PACKAGE DIMENSIONS unit : mm SIP12 26.8x11.8 / SIP12H CASE 127AM ISSUE A www.onsemi.com 2 LA4282 Pd max -- Ta Allowable power dissipation, Pd max -- W 28 25.0 24 Tightening torque 39N•cm With silicone grease applied With arbitrarily large heat sink 20 16 With 200×200×1.5mm3AI board 15.0 12 With 100×100×1.5mm3AI board 10.4 8 With 50×50×1.5mm3AI board 5.0 4 Independent IC 2.9 0 0 -20 20 40 60 80 Ambient temperature, Ta -- °C 100 JK428203 Pin Assignment and Block Diagram 30kΩ 300Ω + CH1 Thermal Over Voltage Protector Ripple Filter + - CH2 30kΩ 300Ω 1 NF1 2 3 4 IN1 RIPPLE PRE FILTER GND VCC Mute Circuit 5 6 IN2 NF2 7 8 9 10 OUT2 MUTE POWER VCC GND2 www.onsemi.com 3 11 12 OUT1 POWER GND1 LA4282 Test Circuit 56kΩ MT/SW 8 input1 + 10 C1 + 4.7μF C2 + + 2 CH1 1 C9 + 11 - 100μF * 12 4 9 C3 + input2 VCC C10 470μF/50V 100μF C4 + 6 - 5 + * CH2 7 C8 0.1μF 1000μF/25V RL 8Ω R2 2.2Ω R1 2.2Ω C7 0.1μF C6 + RL 8Ω 1000μF/25V 4.7μF *Polyester film capacitor 3 + C5 100μF/25V www.onsemi.com 4 LA4282 12 8 6 =1 0% 10 8 6 3% 10 PO -- VCC RL = 4Ω f = 1kHz Dual Operation TH D Output power, PO -- W 1% D= 12 TH Output power, PO -- W 14 14 3% 16 PO -- VCC RL = 8Ω f = 1kHz Dual Operation 10% 18 4 4 2 2 0 10 0 20 30 40 Supply voltage, VCC -- V 10 1% 8 6 4 VCC = 32V RL = 8Ω Dual Operation 5 7 100 2 3 40 20 5 7 10k 2 3 5 7 100k JK428206 Hz ) (RL = 8Ω Noise level Mute ON RL = 100Ω -100 -60 -50 -30 -40 -20 -10 Input voltage, VIN -- dBm f = 10kHz 0.1 0.01 1kHz 2 3 5 THD = 10% 1.0 5 3 2 5 3 7 10 2 3 5 7 2 100 3 5 7 1000 JK428209 THD -- f VCC = 32V RL = 8Ω Dual Operation 2 1.0 7 5 3 2 PO = 4W 0.1 7 5 2W 3 10Hz 0.1 VCC = 35V 32V 30V Input voltage, VIN -- mV Total harmonic distortion, THD -- % Total harmonic distortion, THD -- % 5 3 2 5 7 10k 2 3 5 7 100k JK428207 PO -- VIN 3 1.0 5 5 7 1k 2 3 f = 1kHz 5 3 2 3 2 5 7 100 2 3 JK428208 THD -- PO 5 10 2 3 3 2 5 0 VCC = 32V RL = 8Ω Dual Operation 10 VCC = 32V RL = 8Ω 2 VG = 34dΒ Dual Operation 0.1 RL = 8Ω 2 4 10 -40 -70 6 THD = 10% -20 -120 8 5 M -80 1% 3 FF ute O -60 10 Frequency, f -- Hz VO -- VIN 0 40 JK428205 PO -- f THD = 3% 0 5 7 1k 2 3 VCC = 32V f = 1kHz 30 12 2 Frequency, f -- Output signal level, VO -- dBm Output power, PO -- W 3% 10 2 3 20 14 THD = 10% 12 2 10 16 Output power, PO -- W Output power, PO -- W 14 0 Supply voltage, VCC -- V PO -- f 16 0 0 50 JK428204 5 7 1.0 2 3 5 Output power, PO -- W 7 10 2 3 2 10 JK428210 www.onsemi.com 5 2 3 5 100 2 3 5 1k 2 3 Frequency, f -- Hz 5 10k 2 3 5 100k JK428211 LA4282 Response -- f 2 ICC -- PO 5 VCC = 32V Dual Operation 3 0 Current dissipation, ICC -- A 2 -4 -6 VCC = 32V VO = 0dBm RL = 8Ω VG = 40dB / 1kHz -8 2 3 5 2 3 100 5 1k 2 3 5 2 3 10k Frequency, f -- Hz 1% 3% 0% =1 TH D Output power, PO -- W 8 6 4 2 10 0 20 30 40 Supply voltage, VCC -- V 3 V 5V V CC 7 =3 25V 5 THD = 10% V 20 3 2 1.0 5 7 0.1 2 3 5 7 1.0 2 3 5 7 10 Output power, PO -- W 3 2 7 5 T -OU FILTER 3 2 -IN FILTER 0.1 7 5 5 7 10 2 3 5 JK428213 Pd -- PO THD = 10% 35V 10 7 V CC 5 = 40V 32V 30V 25V 3 2 5 7 0.1 2 3 5 2 7 1.0 3 5 7 10 2 3 5 JK428215 Pd -- PO f = 1kHz Dual Operation RL = 16Ω 3 2 THD = 10% 10 35V 7 VCC 5 = 40V 3 32V 30V 25V 2 5 7 0.1 2 3 5 2 7 1.0 3 5 7 10 Output power, PO -- W JK428216 1.0 3 2 1.0 5 VCC = 32V RL = 8Ω BW = 20Hz to 20kHz 3 Output noise voltage, VNO -- mV 2 2 7 1.0 Output power, PO -- W VNO -- Rg 5 5 5 32 10 3 f = 1kHz Dual Operation RL = 8Ω 3 1.0 50 30V 2 2 JK428214 Pd -- PO f = 1kHz Dual Operation RL = 4Ω 5 7 0.1 Output power, PO -- W Allowable power dissipation, Pd -- W Allowable power dissipation, Pd -- W 5 0.1 5 10 0 2 JK428212 f = 1kHz RL = 16Ω Dual Operation 12 3 2 5 100k PO -- VCC 14 5 3 Allowable power dissipation, Pd -- W -10 8Ω 16Ω Ω =4 5 2 3 5 JK428217 VRO -- VR 5 Output ripple voltage, VRO -- mVms Response -- dB -2 RL 1.0 VCC = 32V RL = 8Ω 3 2 1.0 7 Rg = 10kΩ 5 Rg = 3 0 2 0.1 7 2 3 5 1k 2 3 5 10k 2 3 5 100k Signal source resistance, Rg -- Ω 2 3 5 5 5 7 JK428218 www.onsemi.com 6 0.1 2 3 5 7 1.0 2 Ripple voltage, VR -- Vrms 3 5 7 10 JK428219 LA4282 VRO -- VCC 100 70 CH1 CH2 3 60 2 Crosstalk, C.T -- dB Output ripple voltage, VRO -- mV 5 CT -- f 80 Rg = 10kΩ fR = 100Hz 10 5 3 2 VR = 0.775Vrms (0dBm) 1.0 30 10 0.245Vrms (−10dBm) 3 2 40 20 5 0 10 20 30 Supply voltage, VCC -- V 40 50 CH2 CH1 50 VCC = 32V RL = 8Ω Rg = 10kΩ VO = 0dBm 0 10 JK428220 2 3 5 100 2 3 5 1k 2 3 Frequency, f -- Hz 5 10k 2 3 5 100k JK428221 ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. 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