LM4671ITL/NOPB
Active2.5-W, MONO, ANALOG INPUT CLASS-D SPEAKER AMP WITH EXTERNALLY CONFIGURABLE GAIN
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LM4671ITL/NOPB
Active2.5-W, MONO, ANALOG INPUT CLASS-D SPEAKER AMP WITH EXTERNALLY CONFIGURABLE GAIN
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LM4671ITL/NOPB |
|---|---|
| Features | Differential Inputs, PWM, Shutdown, Depop |
| Max Output Power x Channels @ Load | 2.5 W |
| Max Output Power x Channels @ Load [x] | 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] | 2.4 V |
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 | $ 1.52 | |
| 10 | $ 1.37 | |||
| 25 | $ 1.29 | |||
| 100 | $ 1.10 | |||
| Digi-Reel® | 1 | $ 1.52 | ||
| 10 | $ 1.37 | |||
| 25 | $ 1.29 | |||
| 100 | $ 1.10 | |||
| Tape & Reel (TR) | 250 | $ 1.03 | ||
| 500 | $ 0.90 | |||
| 1250 | $ 0.75 | |||
| 2500 | $ 0.70 | |||
| 6250 | $ 0.67 | |||
| 12500 | $ 0.65 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.39 | |
| 100 | $ 1.07 | |||
| 250 | $ 0.79 | |||
| 1000 | $ 0.56 | |||
Description
General part information
LM4671 Series
The LM4671 is a single supply, high efficiency 2.5W switching audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4671 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.
The LM4671 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power.
Documents
Technical documentation and resources