LM49151

TI Confidential - NDA Restrictions LM49151 www.ti.com SNAS482F – MARCH 2009 – REVISED MARCH 2013 LM49151 Boomer™ Audio Power Amplifier Series Mono Class D Audio Subsystem with Earpiece Driver, Ground Referenced Headphone Amplifiers, Speaker Protection and No Clip with Clip Control Check for Samples: LM49151 FEATURES 1 23 E2S Class D Amplifier Ground Referenced Outputs — Eliminates Output Coupling Capacitors I2C Programmable No Clip Function with Clip Control Voltage Limiter Speaker Protection I2C Volume and Mode Control Ear Piece Amplifier Advanced Click-and-Pop Suppression Low Supply Current Micro-Power Shutdown 20-bump DSBGA Package APPLICATIONS Mobile Phones PDAs Notebook PCs Portable Electronics Devices MP3 Players KEY SPECIFICATIONS Output Power at VDD = 3.3V THD+N ≤ 1% – LS Mode, RL = 8Ω 520mW (Typ) – HP Mode, RL = 32Ω 40mW (Typ) Output Power at VDD = 5V THD+N ≤ 1% – LS Mode, RL = 8Ω 1.25W (Typ) – HP Mode, RL = 32Ω 42mW (Typ) Output Offset – LS Mode 15 6mV (Typ) – HP Mode 15 2mV (Typ) DESCRIPTION The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. The LM49151 combines a 1.25W mono E2S class D amplifier, 125mW Class AB earpiece driver, 42mW/channel stereo ground referenced headphone drivers, volume control, input mixer/multiplexer, and speaker protection into a single device. The LM49151 class D speaker amplifier features Texas Instruments' unique Automatic Level C...