Texas Instruments

LM4889MM  

Audio Amplifiers

LM4889MM Description

The LM4889MM from Texas Instruments is a monolithic Class AB audio power amplifier designed for portable and low-voltage applications. Housed in an 8-VSSOP package, it delivers 1W of continuous output power into an 8Ω load with a supply voltage range of 2.2V to 5.5V, making it ideal for battery-powered devices. As part of TI’s Boomer® series, it combines efficiency with high-quality audio performance. The device is obsolete but remains relevant for legacy designs, offering robust thermal protection and depop circuitry to minimize audible artifacts during power transitions.

LM4889MM Features

• Output Power: 1W per channel into 8Ω, suitable for small speakers or headphones.
• Low Voltage Operation: 2.2V–5.5V supply range optimizes battery life in portable electronics.
• Integrated Protection: Features thermal shutdown and depop circuitry to prevent damage and reduce turn-on/off noise.
• Shutdown Mode: Reduces quiescent current to <1µA, extending battery life in standby.
• Surface-Mount Design: Compact VSSOP-8 package saves PCB space in space-constrained applications.
• REACH & ECCN Compliance: Meets environmental and export control standards (EAR99, REACH Unaffected).

LM4889MM Applications

• Portable Audio Devices: MP3 players, handheld gaming consoles, and Bluetooth speakers.
• Mobile Phones & Tablets: Auxiliary audio amplification for improved sound output.
• IoT & Wearables: Low-power audio solutions for smartwatches or wireless earbuds.
• Legacy Systems: Maintenance or repair of older designs requiring a proven Class AB amplifier.

Conclusion of LM4889MM

The LM4889MM excels in low-voltage, compact audio amplification, offering a balance of performance and efficiency. While obsolete, its thermal protection, depop features, and shutdown mode make it a reliable choice for legacy or low-power audio systems. Engineers valuing space savings and battery longevity in portable designs may still find this IC advantageous despite newer alternatives.

LM4889MM Documents

Download datasheets and manufacturer documentation for LM4889MM

Datasheets :

LM4889      

UNKNOWN TYPE :

8-VSSOP      

HTML Datasheet :

LM4889      

PCN Design/Specification :

VSSOP Pkg Copper Wire 07/Jun/2013