LM4890 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LM4890
Manufacturer

TI
ChipWorker Part#

CW779010703
RoHS

Lead free / RoHS Compliant
Description

1W Audio Power Amplifier
Documentation

Datasheet

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LM4890 Specifications

Attribute	Attribute Value

Part Number	LM4890
Manufacturer	TI
ChipWorker Part#	CW779010703
Documentation	Datasheet
Case/Package	WSON-10
Output Power	1.2 W
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RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

The LM4890 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 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4890 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 LM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4890 features an internal thermal shutdown protection mechanism.
The LM4890 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.
The LM4890 is unity-gain stable and can be configured by external gain-setting resistors.
Available in Space-Saving Packages: DSBGA, VSSOP, SOIC, and WSON
Ultra Low Current Shutdown Mode
BTL Output Can Drive Capacitive Loads
Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
2.2 - 5.5V Operation
No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
Thermal Shutdown Protection
Unity-Gain Stable
External Gain Configuration Capability
## Key Specifications
PSRR at 217Hz, VDD = 5V (Fig. 1): 62dB(typ.)
Power Output at 5.0V & 1% THD: 1W(typ.)
Power Output at 3.3V & 1% THD: 400mW(typ.)
Shutdown Current: 0.1μA(typ.)
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