LM4675SD/NOPB
Active2.65-W, MONO, ANALOG INPUT CLASS-D SPEAKER AMP WITH ULTRA-LOW EMI SPREAD SPECTRUM
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LM4675SD/NOPB
Active2.65-W, MONO, ANALOG INPUT CLASS-D SPEAKER AMP WITH ULTRA-LOW EMI SPREAD SPECTRUM
Technical Specifications
Parameters and characteristics for this part
| Specification | LM4675SD/NOPB |
|---|---|
| Features | Short-Circuit and Thermal Protection, Depop, Differential Inputs, PWM, Shutdown |
| Max Output Power x Channels @ Load | 2.7 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 | 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 | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.09 | |
| 10 | $ 1.88 | |||
| 25 | $ 1.77 | |||
| 100 | $ 1.51 | |||
| 250 | $ 1.42 | |||
| 500 | $ 1.24 | |||
| Digi-Reel® | 1 | $ 2.09 | ||
| 10 | $ 1.88 | |||
| 25 | $ 1.77 | |||
| 100 | $ 1.51 | |||
| 250 | $ 1.42 | |||
| 500 | $ 1.24 | |||
| Tape & Reel (TR) | 1000 | $ 0.88 | ||
| Texas Instruments | SMALL T&R | 1 | $ 1.73 | |
| 100 | $ 1.33 | |||
| 250 | $ 0.98 | |||
| 1000 | $ 0.70 | |||
Description
General part information
LM4675 Series
The LM4675 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A spread spectrum, filterless PWM architecture reduces EMI and eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4675 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 2.2W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The wide band spread spectrum architecture of the LM4675 reduces EMI-radiated emissions due to the modulator frequency.
The LM4675 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 89% at 400mW output power.
Documents
Technical documentation and resources
