
Component
LM386 Amplifier
The LM386 is a low-voltage audio power amplifier IC designed for consumer applications. It offers internally set gain, low distortion, and wide voltage supply range, making it ideal for portable audio projects.
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About LM386 Amplifier
The LM386 is a monolithic power amplifier designed specifically for low-voltage consumer applications. It is internally configured for a gain of 20 (26dB), which can be easily increased to 200 (46dB) by adding a single external capacitor between pins 1 and 8. This versatile IC operates from a supply voltage range of 4V to 15V, making it perfect for battery-powered devices. It can drive loads as low as 4 ohms, delivering up to 0.5 watts of power. Key features include low quiescent power consumption (24mW at 6V), minimal external component count, and a wide bandwidth. Common applications include small audio amplifiers in toys, intercoms, portable radios, and TV sound systems. Choose the LM386 for its reliability, ease of use, and cost-effectiveness in low-power audio amplification projects.
Technical Specifications
| Supply Voltage | 4V to 15V |
|---|---|
| Quiescent Current | 4mA (typical) |
| Output Power | 0.5W (typical at 8Ω, 9V) |
| Gain Internally Set | 20 (200 with external capacitor) |
| Bandwidth | 300 kHz (typical) |
| Total Harmonic Distortion | 0.2% (typical) |
| Input Resistance | 50 kΩ |
| Operating Temperature | 0°C to 70°C |
| Package Type | DIP-8, SOIC-8 |
| Load Impedance | 4Ω to 32Ω |
Alternative Components
TDA2822
PAM8403
LM386N-4
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