Mono filterless Class-D audio amplifier delivers up to 3 W into a 4 Ω load from a 5 V supply at 10% THD+N. The amplifier operates from a 2.8 V to 5.5 V supply and uses differential inputs to reduce noise and RF rectification. It provides up to 93% efficiency with an 8 Ω load and includes short-circuit protection, thermal shutdown, and a shutdown mode below 1 µA. The device is supplied in a compact 9-pin U-FLGA1515-9 package and is rated for -25°C to +85°C ambient operation.
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| Amplifier Class | Class-D |
| Channels | 1 mono |
| Output Power at 10% THD+N, 4Ω, 5V | 3.0W |
| Output Power at 1% THD+N, 4Ω, 5V | 2.4W |
| Output Power at 10% THD+N, 8Ω, 5V | 1.75W |
| Supply Voltage | 2.8 to 5.5V |
| Operating Ambient Temperature | -25 to +85°C |
| Junction Temperature Range | -40 to +125°C |
| Efficiency, 8Ω, 10% THD | 93 typ% |
| Efficiency, 4Ω, 10% THD | 86 typ% |
| THD+N, 1W, 8Ω, 5V | 0.17 typ% |
| Power Supply Ripple Rejection at 1kHz | -70 typdB |
| Dynamic Range | 95 typdB |
| Quiescent Current | 5 typmA |
| Shutdown Current | 1 maxµA |
| Switching Frequency | 400 typkHz |
| Input Impedance | 28.5 typkΩ |
| Package | U-FLGA1515-9 |
| RoHS | Fully RoHS compliant |
| Lead Free | Totally lead-free |
| Halogen/antimony Free | Green device |
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