LM386 Low Voltage Audio Amplifier IC
The LM386 is a low-voltage power amplifier designed for consumer electronics applications. It features a fixed internal gain of 20, minimizing the need for external components. However, by adding an external resistor and capacitor between pins 1 and 8, the gain can be adjusted anywhere between 20 and 200.
The amplifier has ground-referenced inputs, and its output is automatically biased to half of the supply voltage. With a very low quiescent power consumption of just 24 mW when powered by a 6V supply, the LM386 is an ideal choice for battery-powered devices, offering efficient performance in portable applications.
Features
Battery Operation
Minimum External Parts
Wide Supply Voltage Range: 4 V–12 V or 5 V–18 V
Low Quiescent Current Drain: 4 mA
Voltage Gains from 20 to 200
Ground-Referenced Input
Self-Centering Output Quiescent Voltage
Low Distortion: 0.2% (AV = 20, VS = 6 V, RL = 8 Ω, PO = 125 mW, f = 1 kHz)
Available in 8-Pin MSOP Package
| Parameter | Specification |
| Part number | LM386 |
| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (Max) | Mono |
| Power stage supply (Min) (V) | 4 |
| Power stage supply (Max) (V) | 18 |
| Output power (W) | 0.325 |
| Load (Min)(ohms) | 4 |
| THD + N @ 1 kHz (%) | 0.2 |
| Iq (Typ) (mA) | 4 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (Min) (V) | 4 |
| Analog supply (Max )(V) | 18 |
| PSRR (dB) | 50 |
| Operating temperature range (C) | 0 to 70 |
| Rating | See Data Sheet |
Package Includes
1 x LM386 Low Voltage Audio Amplifier IC
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