LM4817 - National Semiconductor

LM4817 1W Stereo Audio Amplifier

The LM4817 combines a bridge-connected (BTL) stereo audio power amplifier with a low dropout voltage regulator (LDO). The audio amplifier delivers 1.0W to a 8Ω load with a less than 1.0% THD+N while operating on a 5V power supply. With VLIM set to 1.0V, the amplifier outputs are clamped to 6Vp-p, ± 800mV. With the LM4817’s adjustable low-dropout (LDO) CMOS l.

Features

an externally controlled micropower shutdown mode and thermal shutdown protection. It also utilizes circuitry that reduces "clicks and pops" during device turn-on and return from shutdown. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount package. Key Specifications n n n n n n n n n n n PO (BTL): VDD = 5V, THD+N ≤ 1%, RL = 8Ω 1.0W(typ) Power supply range (amplifier) 3.0V to 5.5V Power supply range (LDO) 2.5V to 6.0V Shutdown current 0.07µA (typ) LDO output current 300mA (min) LDO dropout voltage (IO.