LM4844 Datasheet | National Semiconductor

Description The LM4844 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it bines a stereo speaker amplifier delivering 495m W per channel into an 8Ω load and a stereo OCL headphone amplifier delivering 33m W per channel into a 32Ω load. It integrates the audio amplifiers, volume control, mixer, power management control, and National 3D enhancement all into a single package. In addition, the LM4844 routes and mixes the stereo and mono inputs into 10 distinct output modes. The LM4844 is controlled through an I2C patible interface. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external ponents. The LM4844 is available in a very small 2.5mm x 2.9mm 30bump micro SMD (TL) package. Features - - - - - - - - Stereo speaker amplifier Stereo OCL headphone amplifier Independent Left, Right, and Mono volume controls National 3D enhancement I2C patible interface Ultra low shutdown current Click and Pop Suppression circuit 10 distinct output modes Applications - - - - - Cell Phones PDAs Portable Gaming Devices Internet Appliances Portable DVD, CD, AAC, and MP3 Players Key Specifications -  POUT, Stereo BTL, 8Ω, 3.3V, 1% THD+N 495m W (typ) 33m W (typ) 0.1μA (typ) -  POUT HP, 32Ω, 3.3V, 1% THD+N -  Shutdown Current, 3.3V Boomer® is a registered trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation .national. Block Diagram .. FIGURE 1. Audio Sub-System Block Diagram .national. Connection Diagrams 30 Bump Micro SMD (TL) Package .. Top View (Bump-side down) Order Number LM4844TL See NS Package Number TLA30CZA Micro SMD (TL) Marking Top View XY = 2 Digit Date Code TT = Die Traceability G = Boomer Family F3 = LM4844TL .national. Pin Connection (TL) Pin A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 D1 D2 D3 D4 D5 E1 E2 E3 E4 E5 F1 F2 F3 F4 F5 RLS+...