LM4668

LM4668 10W High-Efficiency Mono BTL Audio Power Amplifier October 2004 LM4668 10W High-Efficiency Mono BTL Audio Power Amplifier General Description The LM4668 is a high efficiency switching audio power amplifier primarily designed for demanding applications in flat panel monitors and TV’s. It is capable of delivering 6W to an 8Ω mono BTL load with less than 1% distortion (THD+N) from a 12VDC power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4668 features a micro-power, active-low shutdown mode, an internal thermal shutdown protection mechanism, and short circuit protection. The LM4668 contains advanced transient (“pop and click”) suppression circuitry that eliminates noises that would otherwise occur during turn-on and turn-off transitions. Key Specifications j Power Output BTL (VDD = 14V, fIN = 1kHz, THD+N = 10%, RL = 8Ω) j Quiescent Power Supply Current j Efficiency (VDD = 12V, fIN = 1kHz, 10W (typ) 30mA (typ) 79% (typ) 0.15mA (typ) 30dB (typ) RL = 8Ω, POUT = 6W) j Shutdown Current j Fixed Gain Features n Soft-start circuitry eliminates noise during turn-on transition n Low current shutdown mode n Low quiescent current n 6W BTL output, RL = 8Ω n Short circuit protection n Fixed, internally set gain of 30dB Applications n Flat Panel Monitors n Flat Panel TVs n Computer Sound Cards Connection Diagrams LD Package MH Package 20089102 Top View Order Number LM...