Specification	LM4667ITL/NOPB

Features	Short-Circuit Protection, Shutdown, Depop, Differential Inputs
Max Output Power x Channels @ Load	8 Ohm, 1.3 W
Max Output Power x Channels @ Load [custom]	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 D
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V

LM4667 Series

Part	Features	Supplier Device Package	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load [custom]	Output Type	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Type	Package / Case	Package / Case [x]	Package / Case [x]	Utilized IC / Part	Board Type	Supplied Contents
Texas Instruments LM4667MM	Depop Differential Inputs Short-Circuit Protection Shutdown	10-VSSOP	1.3 W 8 Ohm	1	1-Channel (Mono)	Surface Mount	85 °C	-40 °C	2.7 V	5.5 V	Class D	10-MSOP 10-TFSOP	3 mm	0.118 in
Texas Instruments LM4667MMX/NOPB	Depop Differential Inputs Short-Circuit Protection Shutdown	10-VSSOP	1.3 W 8 Ohm	1	1-Channel (Mono)	Surface Mount	85 °C	-40 °C	2.7 V	5.5 V	Class D	10-MSOP 10-TFSOP	3 mm	0.118 in
Texas Instruments LM4667MMBD/NOPB			1.3 W 8 Ohm	1	1-Channel (Mono)				2.7 V	5.5 V					LM4667	Fully Populated	Board(s)
Texas Instruments LM4667MMBD			1.3 W 8 Ohm	1	1-Channel (Mono)				2.7 V	5.5 V					LM4667	Fully Populated	Board(s)
Texas Instruments LM4667MM/NOPB	Depop Differential Inputs Short-Circuit Protection Shutdown	10-VSSOP	1.3 W 8 Ohm	1	1-Channel (Mono)	Surface Mount	85 °C	-40 °C	2.7 V	5.5 V	Class D	10-MSOP 10-TFSOP	3 mm	0.118 in
Texas Instruments LM4667ITLX/NOPB	Depop Differential Inputs Short-Circuit Protection Shutdown	9-DSBGA	1.3 W 8 Ohm	1	1-Channel (Mono)	Surface Mount	85 °C	-40 °C	2.7 V	5.5 V	Class D	9-WFBGA DSBGA
Texas Instruments LM4667ITL/NOPB	Depop Differential Inputs Short-Circuit Protection Shutdown	9-DSBGA	1.3 W 8 Ohm	1	1-Channel (Mono)	Surface Mount	85 °C	-40 °C	2.7 V	5.5 V	Class D	9-WFBGA DSBGA

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	$ 1.11
		10	$ 1.00
		25	$ 0.95
		100	$ 0.78
	Digi-Reel®	1	$ 1.11
		10	$ 1.00
		25	$ 0.95
		100	$ 0.78
	Tape & Reel (TR)	250	$ 0.73
		500	$ 0.64
		1250	$ 0.51
		2500	$ 0.47
		6250	$ 0.45
		12500	$ 0.43
Texas Instruments	SMALL T&R	1	$ 0.84
		100	$ 0.64
		250	$ 0.47
		1000	$ 0.34

Description

General part information

LM4667 Series

The LM4667 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces parts count, simplifies circuit design, and reduces board area. The LM4667 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4667 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 3V supply, it is capable of driving 8Ω transducer loads at a continuous average output of 450mW with less than 1%THD+N. Its flexible power supply requirements allow operation from 2.7V to 5.5V.

The LM4667 has high efficiency with an 8Ω transducer load compared to a typical Class AB amplifier. With a 3V supply, the IC's efficiency for a 100mW power level is 74%, reaching 84% at 450mW output power.

Documents

Technical documentation and resources

LM4667 Filterless High Efficiency 1.3W Switching Audio Amplifier datasheet (Rev. C)

Data sheet