Texas Instruments LM4952
The LM4952 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 3.1 watts per channel to a 4Ω single-ended load with less than 1% THD+N when powered by a 12VDC power supply. The LM4952 does not require bootstrap capacitors or snubber circuits.FEATURES
1●23 Pop & Click Circuitry Eliminates Noise During Turn-on and Turn-off Transitions
● Low Current, Active-low Shutdown Mode
● Low Quiescent Current
● Stereo 3.8W Output, RL = 4Ω
● DC-controlled Volume Control
● Short Circuit Protection
APPLICATIONS
● Flat Panel Monitors● Flat Panel TV's
● Computer Sound Cards KEY SPECIFICATIONS
● Quiscent Power Supply Current 18mA (typ)
● POUT @ VDD = 12V, RL = 4Ω, 10% THD+N 3.8W (typ)
● Shutdown current 55μA (typ)
DESCRIPTION
Eliminating external feedback resistors, an internal, DC-controlled, volume control allows easy and variable gain adjustment. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Therefore, it is ideally suited for display applications requiring high power and minimal size. The LM4952 features a low-power consumption active-low shutdown mode. Additionally, the LM4952 features an internal thermal shutdown protection mechanism along with short circuit protection.