LA4743A Datasheet | SANYO

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 ponents required. It is also pin patible with the LA4743B, which differs in the amount of gain provided. Package Dimensions unit: mm 3236-HZIP25 [LA4743A] 29.2 25.6 4.5 Features - Maximum output power: 45 W × 4 channels (VCC = 14.4 V, 4 Ω load, 1 k Hz) - 40 W × 4 channels (VCC = 13.7 V, 4 Ω load, 1 k Hz) - Requires only seven external ponents and does not require an oscillation prevention RC circuit, a noise filter, or a BS capacitor. R1.7 14.4 17.4 3.3 10.2 0.4 4.0 4.0 2.60 2.0 (1.0) 2.0 Functions - Muting function - Built-in standby switch - Full plement of built-in protection circuits, including protection from shorting to VCC, shorting to ground, load shorting, overvoltages, and overheating. SANYO: HZIP25 Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Package thermal resistance Symbol VCC max1 VCC max2 IOpeak Pd max Topr Tstg θjc With an arbitrarily large heat sink Signal present No signal (for 1 minute) Conditions Ratings 18 26 4.5/ch 50 - 40 to +85 - 40 to +150 1 Unit V V A W °C °C °C/W 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...