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Technical Specifications
Parameters and characteristics for this part
| Specification | LM4673SDX/NOPB |
|---|---|
| Features | Short-Circuit and Thermal Protection, Depop, Differential Inputs, PWM, Shutdown |
| Max Output Power x Channels @ Load | 2.65 W, 4 Ohm |
| 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 | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-WSON (3x3) |
| 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 | $ | |
|---|---|---|---|---|
Description
General part information
LM4673 Series
The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D 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 LM4673 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 LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V 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
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