Specification	LM4990ITL/NOPB

Max Output Power x Channels @ Load	4 Ohm, 2 W, 1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	1-Channel (Mono)
Package / Case	DSBGA, 9-WFBGA
Supplier Device Package	9-DSBGA
Type	Class AB
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.2 V

LM4990 Series

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case	Type	Mounting Type	Output Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Board Type	Amplifier Type	Supplied Contents	Utilized IC / Part
Texas Instruments LM4990ITL/NOPB	5.5 V	2.2 V	9-WFBGA DSBGA	Class AB	Surface Mount	1-Channel (Mono)	9-DSBGA	85 °C	-40 °C	1 2 W 4 Ohm
Texas Instruments LM4990ITLBD	5.5 V	2.2 V				1-Channel (Mono)				1 2 W 4 Ohm	Fully Populated	Class AB	Board(s)	LM4990
Texas Instruments LM4990LD/NOPB	5.5 V	2.2 V	10-WFDFN Exposed Pad	Class AB	Surface Mount	1-Channel (Mono)	10-WSON (3x4)	85 °C	-40 °C	1 2 W 4 Ohm
Texas Instruments LM4990LDX/NOPB	5.5 V	2.2 V	10-WFDFN Exposed Pad	Class AB	Surface Mount	1-Channel (Mono)	10-WSON (3x4)	85 °C	-40 °C	1 2 W 4 Ohm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.50
		10	$ 1.34
		25	$ 1.27
		100	$ 1.04
	Digi-Reel®	1	$ 1.50
		10	$ 1.34
		25	$ 1.27
		100	$ 1.04
	Tape & Reel (TR)	250	$ 0.47
		500	$ 0.42
		1250	$ 0.39
Texas Instruments	SMALL T&R	1	$ 1.11
		100	$ 0.85
		250	$ 0.63
		1000	$ 0.45

Description

General part information

LM4990 Series

The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (NGZ and DGQ only) to a 4Ω BTL load with less than 1% distortion (THD+N+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 LM4990 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 LM4990 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown pin to be driven in a likewise manner to enable shutdown.

Documents

Technical documentation and resources

LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level datasheet (Rev. E)

Data sheet