LM4938MH/NOPB

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The LM4938MH/NOPB is a low voltage audio power amplifier designed to meet the needs of low power, portable multimedia systems and is one of the most versatile audio power amplifiers available. This amplifier offers very low current consumption, low cost, and a great sounding solution to provide a high quality audio experience. It is especially suitable for use in portable audio products, such as cell phones and MP3 players which require a high quality audio experience.

The LM4938MH/NOPB is a 2 Watt bridged-mode audio power amplifier and includes a variety of features that make it the ideal choice for a wide range of portable audio applications. It features low quiescent current, high power efficiency, and an adjustable gain that can be adjusted to match the needs of the application. The LM4938MH/NOPB also includes thermal overload protection, short circuit protection, and over-temperature protection for safety, and offers protection against back EMF.

The LM4938MH/NOPB is capable of delivering 2.5W of continuous power into an 8 ohm speaker, with greater than 90% efficiency. It can also operate in bridge-tied load (BTL) mode to deliver higher output power of up to 4W, with 87% efficiency into a 4 ohm speaker. In addition, the LM4938MH/NOPB has built-in thermal shutdown and current limiting protection which helps protect the device and connected components from thermal damage.

The LM4938MH/NOPB also provides a wide supply voltage range of 1.8V to 5.5V. This makes the device ideal for portable devices that use Li-ion batteries or other low voltage power sources. This amplifier can also be used with higher voltage supplies, such as 12V, to provide even more power and efficiency.

The LM4938MH/NOPB is a single-ended amplifier that relies on a single stage class-D circuit to provide amplification. This type of amplifier provides high efficiency as it does not require pre-amplification or negative feedback. The LM4938MH/NOPB operates with a switching frequency of 1.4 MHz and has a very low distortion factor of 0.04%. This ensures excellent sound quality and allows the device to provide a wide frequency response, with a bandwidth of 20 Hz to 30 kHz.

The LM4938MH/NOPB is generally employed in portable audio applications such as cell phones, mp3 players, portable media players, and low power portable audio/video applications. It is also suitable for use in portable wireless speakers, portable game consoles, PDAs, and other multimedia applications.

The LM4938MH/NOPB is a great choice for low power audio applications that require high efficiency, low distortion, and portable operation. It is one of the most versatile audio power amplifiers available and is perfect for portable audio products requiring a high quality audio experience for their users.

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