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See Technical Specifications

LM4890M/NOPB +BOM

1 Watt Audio Power Amplifier

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM4890M/NOPB
Datasheet:

LM4890M/NOPB Datasheet (PDF)
Series:

Boomer®
Type:

Class AB
Output Type:

1-Channel (Mono)
Max Output Power x Channels @ Load:

1W x 1 @ 8Ohm
EDA/CAD Models:

Request Free CAD Models for LM4890M/NOPB

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Tel: +852 95804164

LM4890M/NOPB General 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 5V_DC 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.

Key Features

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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Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersAudio Amplifiers	Series	Boomer®
Type	Class AB	Output Type	1-Channel (Mono)
Max Output Power x Channels @ Load	1W x 1 @ 8Ohm	Voltage - Supply	2.2V ~ 5.5V
Features	Depop, Shutdown, Thermal Protection	Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)	Base Product Number	LM4890

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AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty

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Ratings and Reviews

J**n 02/23/2024

Corresponds to the description i recommend the seller.

N**o 12/25/2023

Shawls drove 20 days. Packed well-in a postal duster bag and wrapped with a duster. Executed qualitatively, miniature (11 by 21,5mm). Checked-work. By default, the jumpers are sealed at 12 volts, but at the back of each scarf there is a jumper scheme to get 5, 8, 9 and 12 volts respectively. Thanks to the seller. I recommend to buy.

A**n 05/21/2023

I was hoping to get a new original. Got used. There are traces of dismantling and a little gary. I hope it will work.

R**r 08/03/2022

Great company. Prompt and reliable!