LM4928 Series

1.2-W, stereo, analog input Class-AB audio amplifier with RF suppression

Catalog

1.2-W, stereo, analog input Class-AB audio amplifier with RF suppression

Part	Utilized IC / Part	Board Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplied Contents	Amplifier Type	Max Output Power x Channels @ Load [x]	Output Type	Features	Mounting Type	Supplier Device Package	Package / Case	Type	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments LM4928TLBD	LM4928	Fully Populated	2.4 V	5.5 V	Board(s)	Class AB	2 2.2 W 4 Ohm	2-Channel (Stereo)
Texas Instruments LM4928TL/NOPB			2.4 V	5.5 V			2 2.2 W 4 Ohm	2-Channel (Stereo)	Depop Differential Inputs Shutdown Thermal Protection	Surface Mount	16-DSBGA	16-WFBGA DSBGA	Class AB	85 °C	-40 °C
Texas Instruments LM4928SDX/NOPB			2.4 V	5.5 V			2 2.2 W 4 Ohm	2-Channel (Stereo)	Depop Differential Inputs Shutdown Thermal Protection	Surface Mount	14-WSON (4x3)	14-WFDFN Exposed Pad	Class AB	85 °C	-40 °C

Catalog

1.2-W, stereo, analog input Class-AB audio amplifier with RF suppression

Key Features

• RF Suppression CircuitryFully Differential AmplificationAvailable in Space-Saving DSBGA and WSON PackagesUltra Low Current Shutdown ModeCan Drive Capacitive Loads up to 100pFImproved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions2.4 - 5.5V OperationNo Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors RequiredKey SpecificationsImproved PSRR at 217Hz, 90dB (Typ)Output Power at 5.0V @ 1% THD+N (8Ω),1.2W (Typ)Output Power at 3.0V @ 1% THD+N (8Ω), 400mW (Typ)Shutdown Current, 0.1µA (Typ)Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.RF Suppression CircuitryFully Differential AmplificationAvailable in Space-Saving DSBGA and WSON PackagesUltra Low Current Shutdown ModeCan Drive Capacitive Loads up to 100pFImproved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions2.4 - 5.5V OperationNo Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors RequiredKey SpecificationsImproved PSRR at 217Hz, 90dB (Typ)Output Power at 5.0V @ 1% THD+N (8Ω),1.2W (Typ)Output Power at 3.0V @ 1% THD+N (8Ω), 400mW (Typ)Shutdown Current, 0.1µA (Typ)Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

Description

The LM4928 is an stereo fully differential stereo audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication devices. It is capable of delivering 1.2 watts of continuous average power to a 8Ω load with less than 1% distortion (THD+N) from a 5VDCpower supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4928 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. The LM4928 features a low-power consumption shutdown mode. To facilitate this, shutdown may be enabled by logic low. Additionally, the LM4928 features an internal thermal shutdown protection mechanism. The LM4928 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4928 is an stereo fully differential stereo audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication devices. It is capable of delivering 1.2 watts of continuous average power to a 8Ω load with less than 1% distortion (THD+N) from a 5VDCpower supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4928 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. The LM4928 features a low-power consumption shutdown mode. To facilitate this, shutdown may be enabled by logic low. Additionally, the LM4928 features an internal thermal shutdown protection mechanism. The LM4928 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.