LM4879 Series

1.1-W, mono, analog input Class-AB audio amplifier with ultra-low current shutdown mode

Catalog

1.1-W, mono, analog input Class-AB audio amplifier with ultra-low current shutdown mode

Part	Supplier Device Package	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Features	Mounting Type	Type	Output Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case [x]	Package / Case [x]
Texas Instruments LM4879ITL/NOPB	9-DSBGA	9-WFBGA DSBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879MM/NOPB	10-VSSOP	10-MSOP 10-TFSOP	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V	3 mm	0.118 in
Texas Instruments LM4879ITP	8-DSBGA	8-UFBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879ITPX/NOPB	8-DSBGA	8-UFBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879IBP/NOPB	8-uSMD	8-VFBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879MMX/NOPB	10-VSSOP	10-MSOP 10-TFSOP	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V	3 mm	0.118 in
Texas Instruments LM4879IBL	9-DSBGA	9-TFBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879IBPX	8-uSMD	8-VFBGA	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V
Texas Instruments LM4879SDX/NOPB	8-WSON (4x4)	8-WDFN Exposed Pad	85 °C	-40 °C	1 1.1 W	Depop Shutdown Thermal Protection	Surface Mount	Class AB	1-Channel (Mono)	5.5 V	2.2 V

Catalog

1.1-W, mono, analog input Class-AB audio amplifier with ultra-low current shutdown mode

Key Features

• No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors RequiredUnity Gain StableUltra Low Current Shutdown ModeFast Turn On: 80ms (typ), 110ms (max) with 1.0µF CapacitorBTL Output Can Drive Capacitive Loads up to 100pFAdvanced Pop and Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions2.2V - 5.0V OperationAvailable in Space-Saving DSBGA, WSON, and VSSOP PackagesKey SpecificationsPSRR: 5V, 3V at 217Hz: 62dB (typ)Power Output at 5V, 1%THD+N: 1.1W (typ)Power Output at 3V, 1%THD+N: 350mW (typ)Shutdown Current: 0.1µA (typ)All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors RequiredUnity Gain StableUltra Low Current Shutdown ModeFast Turn On: 80ms (typ), 110ms (max) with 1.0µF CapacitorBTL Output Can Drive Capacitive Loads up to 100pFAdvanced Pop and Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions2.2V - 5.0V OperationAvailable in Space-Saving DSBGA, WSON, and VSSOP PackagesKey SpecificationsPSRR: 5V, 3V at 217Hz: 62dB (typ)Power Output at 5V, 1%THD+N: 1.1W (typ)Power Output at 3V, 1%THD+N: 350mW (typ)Shutdown Current: 0.1µA (typ)All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.

Description

The LM4879 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1 watt of continuous average power to an 8Ω BTL 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 LM4879 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements. The LM4879 features a low-power consumption global shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4879 features an internal thermal shutdown protection mechanism. The LM4879 contains advanced pop and click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4879 is unity-gain stable and can be configured by external gain-setting resistors. The LM4879 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1 watt of continuous average power to an 8Ω BTL 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 LM4879 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements. The LM4879 features a low-power consumption global shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4879 features an internal thermal shutdown protection mechanism. The LM4879 contains advanced pop and click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4879 is unity-gain stable and can be configured by external gain-setting resistors.