The LM4962 is a compact 5mm x 5mm audio amplifier chip that integrates a built-in boost converter, designed to efficiently drive both ceramic speakers and stereo speaker systems. It features an audio power amplifier that supports mono ceramic speaker configurations. The chip operates on a 3.2V DC power supply and can deliver a 15V peak-to-peak output for bridged load (BTL) applications, maintaining a low THD+N level of less than 1%. This makes it ideal for high-quality audio performance in space-constrained designs. Additionally, the LM4962 includes overcurrent and overvoltage protection mechanisms to safeguard the internal boost converter. A soft-start function is also integrated into the DC/DC converter, ensuring smooth power-up and reducing stress on the system.
The LM4953 is another audio amplifier solution that uses a charge pump to drive ceramic speakers, requiring only eight external components for operation. It comes in a smaller 3mm x 4mm package, yet still offers a powerful combination of an audio amplifier and charge pump. This chip can boost a 3.6V supply voltage to provide up to 12.6V peak-to-peak for a 2µF + 30W bridge load, with distortion and noise levels remaining under 1%. Its efficiency and performance make it a great choice for portable and low-power audio applications.
Both the LM4962 and LM4953 include a low-power shutdown mode and internal thermal protection, eliminating the need for additional startup capacitors or transient voltage suppression circuits. They also feature a "switch/sense" noise suppression circuit to minimize interference. Their unity gain is highly stable and can be easily adjusted using an external gain-setting resistor, offering flexibility for different audio configurations. These features make both chips reliable and easy to integrate into a wide range of audio systems.
Strontium Carbonate,High Purity Strontium Carbonate,High Whiteness Strontium Carbonate,White Powder Strontium Carbonate
Shenzhou Jiaxin Chemical Co.,Ltd , https://www.jiaxinbaso4.com