LM4674SQ/NOPB
ActiveAUDIO AMP SPEAKER 2-CH STEREO 2.5W CLASS-D 16-PIN WQFN EP T/R
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LM4674SQ/NOPB
ActiveAUDIO AMP SPEAKER 2-CH STEREO 2.5W CLASS-D 16-PIN WQFN EP T/R
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LM4674SQ/NOPB |
|---|---|
| Features | Shutdown, Differential Inputs, PWM, Depop, Short-Circuit Protection |
| Max Output Power x Channels @ Load | 2.5 W |
| Max Output Power x Channels @ Load [x] | 2 |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | 2-Channel (Stereo) |
| Package / Case | 16-WFQFN Exposed Pad |
| Supplier Device Package | 16-WQFN (4x4) |
| 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 | $ 1.79 | |
| 10 | $ 1.61 | |||
| 25 | $ 1.52 | |||
| 100 | $ 1.29 | |||
| 250 | $ 1.21 | |||
| 500 | $ 1.06 | |||
| Digi-Reel® | 1 | $ 1.79 | ||
| 10 | $ 1.61 | |||
| 25 | $ 1.52 | |||
| 100 | $ 1.29 | |||
| 250 | $ 1.21 | |||
| 500 | $ 1.06 | |||
| Tape & Reel (TR) | 1000 | $ 0.88 | ||
| 2000 | $ 0.82 | |||
| 5000 | $ 0.79 | |||
| 10000 | $ 0.76 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.48 | |
| 100 | $ 1.14 | |||
| 250 | $ 0.84 | |||
| 1000 | $ 0.60 | |||
Description
General part information
LM4674 Series
The LM4674 is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4674 is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V.
The LM4674 features high efficiency compared to conventional Class AB amplifiers. When driving an 8Ω speaker from a 3.6V supply, the device features 85% efficiency at PO= 500mW. Four gain options are pin selectable through the G0 and G1 pins.
Documents
Technical documentation and resources
