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LA4743A Datasheet(PDF) 1 Page - Sanyo Semicon Device |
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LA4743A Datasheet(HTML) 1 Page - Sanyo Semicon Device |
1 / 9 page Ordering number : ENN6629 O3100RM (OT) No. 6629-1/9 Overview The LA4743A is a 45 W 4-channel power amplifier IC for car stereo systems. It features a built-in bridge circuit and the ability to radically reduce the number of external components required. It is also pin compatible with the LA4743B, which differs in the amount of gain provided. Features • Maximum output power: 45 W × 4 channels (VCC = 14.4 V, 4 Ω load, 1 kHz) • 40 W × 4 channels (V CC = 13.7 V, 4 Ω load, 1 kHz) • Requires only seven external components and does not require an oscillation prevention RC circuit, a noise filter, or a BS capacitor. Functions • Muting function • Built-in standby switch • Full complement of built-in protection circuits, including protection from shorting to VCC, shorting to ground, load shorting, overvoltages, and overheating. Package Dimensions unit: mm 3236-HZIP25 2.0 2.0 29.2 2.60 (1.0) 25.6 0.53 R1.7 0.4 4.5 4.0 4.0 SANYO: HZIP25 [LA4743A] LA4743A SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 45 W Four-Channel (Bridge Circuit) Power Amplifier Monolithic Linear IC Any and all SANYO 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 representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein. Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max1 Signal present 18 V VCC max2 No signal (for 1 minute) 26 V Maximum output current IOpeak 4.5/ch A Allowable power dissipation Pd max With an arbitrarily large heat sink 50 W Operating temperature Topr –40 to +85 °C Storage temperature Tstg –40 to +150 °C Package thermal resistance θjc 1 °C/W Specifications Maximum Ratings at Ta = 25°C |
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