Ordering number : ENA5718 Monolithic Linear IC Audio Output for Radio Cassette Recorders LA4227 3W × 2ch Power Amplifier Overview LA4227 is a 3W 2-channel power amplifier. This IC requires few external components and is ideal for power amplifier used for radio cassette players/recorders. Functions • 3W × 2 channel (VCC = 9V, RL = 3Ω) • Standby switch on chip • Thermal shutdown protector on chip Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol VCC max Pd max Conditions Ratings Rg = 0 (No signal) Arbitrarily large heat sink Unit 20 V 4.0 W Operating temperature Topr -20 to +75 °C Storage temperature Tstg -55 to +150 °C Operating Conditions at Ta=25°C Parameter Recommended supply voltage Operating voltage range Operating load resistance range Symbol Conditions Ratings VCC VCC op unit 9 Not exceeding the maximum ratings RL op Bridge V 4.2 to 18 V 3 to 8 Ω 8 Ω Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before usingany SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. 83006 / 42706 MS JK B8-7553, B8-4892, B8-3581 No.A5718-1/4 LA4227 Electrical Characteristics at Ta = 25°C, VCC = 9V, RL = 4Ω, f = 1kHz, Rg = 600Ω, RNF = 43Ω Parameter Symbol Ratings Conditions min Quiescent current ICCO Voltage gain VG Rg = 0 VO = 0dBm Voltage gain difference ∆VG Total harmonic distortion THD Output power PO1 PO = 0.25W (VO = 1V) THD = 10% PO2 RL = 3Ω, THD = 10% PO3 Bridge, RL = 8Ω, THD = 10% Output noise voltage typ Unit max 10 20 40 mA 43.0 45.0 47.0 dB 2.0 dB 0.2 2.0 1.0 % 2.5 W 3.0 W (4.7) W VNO1 Rg = 0, DIN AUDIO VNO2 Rg = 10kΩ, DIN AUDIO Channel separation Chsep VO = 0dBm, Rg = 10kΩ 45 55 dB Ripple rejection SVRR Vr= 150mV, Rg = 0, fr = 100Hz, DIN AUDIO 40 52 dB Standby current Ist Input resistance Ri 21 30 0.3 1.0 mV 0.4 2.0 mV 10 µA kΩ Package Dimensions unit : mm 3022B 19.0 12 0.4 7.62 6.45 7 (0.61) 2.54 5.12 3.6 6 1.25 1.3 0.5 0.51min (3.46) 3.5 4.26max 1 3.81 SANYO : DIP12F(300mil) No.A5718-2/4 LA4227 Block Diagram Application Circuit Example No.A5718-3/4 LA4227 Recommended board Cu-foiled pattern (Actual size) 25.0 8.7 25.0 53.0 10.7 8.7 3.6 fin 1 0.5 8.0 8.0 12.0 10.7 0.5 3.6 fin2 Specifications of any and all SANYO Semiconductor 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. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of April, 2006. Specifications and information herein are subject to change without notice. PS No.A5718-4/4