LM4929 Series

40-mW, mono, analog input headphone amplifier

Catalog

40-mW, mono, analog input headphone amplifier

Part	Features	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Type	Output Type	Mounting Type	Package / Case	Package / Case [x]	Package / Case [x]	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplied Contents	Utilized IC / Part	Board Type	Amplifier Type
Texas Instruments LM4929MM/NOPB	Shutdown Thermal Protection	16 Ohm 80 mW	2	85 °C	-40 °C	10-VSSOP	Class AB	Headphones 2-Channel (Stereo)	Surface Mount	10-MSOP 10-TFSOP	3 mm	0.118 in	5.5 V	2 V
Texas Instruments LM4929MMBD		16 Ohm 80 mW	2					Headphones 2-Channel (Stereo)					5.5 V	2 V	Board(s)	LM4929	Fully Populated	Class AB
Texas Instruments LM4929MMX/NOPB	Shutdown Thermal Protection	16 Ohm 80 mW	2	85 °C	-40 °C	10-VSSOP	Class AB	Headphones 2-Channel (Stereo)	Surface Mount	10-MSOP 10-TFSOP	3 mm	0.118 in	5.5 V	2 V

Catalog

40-mW, mono, analog input headphone amplifier

Key Features

• OCL outputs — No DC Blocking CapacitorsExternal Gain-Setting CapabilityAvailable in Space-Saving VSSOP PackageUltra Low Current Shutdown Mode2V - 5.5V OperationUltra Low NoiseKey SpecificationsPSRR at 217Hz and 1kHzOutput Power at 1kHz with VDD= 2.4V,1% THD+N into a 16Ω load, 65dB (Typ)Output Power at 1kHz with VDD= 3V,1% THD+N into a 16Ω load, 25 mW (Typ)Shutdown current, 40 mW (Typ), 2.0µA (Max)Output Voltage change on releasefrom Shutdown VDD= 2.4V, RL= 16Ω, 1mV (Max)Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.OCL outputs — No DC Blocking CapacitorsExternal Gain-Setting CapabilityAvailable in Space-Saving VSSOP PackageUltra Low Current Shutdown Mode2V - 5.5V OperationUltra Low NoiseKey SpecificationsPSRR at 217Hz and 1kHzOutput Power at 1kHz with VDD= 2.4V,1% THD+N into a 16Ω load, 65dB (Typ)Output Power at 1kHz with VDD= 3V,1% THD+N into a 16Ω load, 25 mW (Typ)Shutdown current, 40 mW (Typ), 2.0µA (Max)Output Voltage change on releasefrom Shutdown VDD= 2.4V, RL= 16Ω, 1mV (Max)Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

Description

The LM4929 is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16Ω load or 25mW per channel into a 32Ω load at 1% THD+N from a 3V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4929 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4929 is configured for OCL (Output Capacitor-Less) outputs, operating with no DC blocking capacitors on the outputs. The LM4929 features a low-power consumption shutdown mode with a faster turn on time. Additionally, the LM4929 features an internal thermal shutdown protection mechanism. The LM4929 is unity gain stable and may be configured with external gain-setting resistors. The LM4929 is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16Ω load or 25mW per channel into a 32Ω load at 1% THD+N from a 3V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4929 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4929 is configured for OCL (Output Capacitor-Less) outputs, operating with no DC blocking capacitors on the outputs. The LM4929 features a low-power consumption shutdown mode with a faster turn on time. Additionally, the LM4929 features an internal thermal shutdown protection mechanism. The LM4929 is unity gain stable and may be configured with external gain-setting resistors.