Texas Instruments LM386M-1 325mW Single Channel Audio Amplifier IC, SOIC-8

The Texas Instruments LM386M-1/NOPB is a versatile, wide Vin low power audio amplifier designed specifically for low voltage consumer applications, offering exceptional efficiency and simplicity.

With its gain internally set to 20, it minimises the need for external components, keeping your circuit design clean and cost-effective. For applications requiring higher amplification, the gain can be easily increased to any value from 20 to 200 by simply adding an external resistor and capacitor between pins 1 and 8. The inputs are ground referenced, and the output automatically biases to half the supply voltage, simplifying integration and ensuring stable operation.

A standout feature is its remarkably low power consumption. The quiescent power drain is only 24mW when operating from a 6-volt supply, making the LM386M-1 an ideal choice for battery-powered devices where longevity is critical. This amplifier is a green product, manufactured without antimony or bromine (no Sb/Br).

Supplied in a compact SOIC (Small Outline Integrated Circuit) surface-mount package with 8 pins, it is perfect for space-constrained PCB designs. Its robust performance across a supply voltage range of 4V to 12V provides excellent flexibility for various project requirements.

Key Specifications

• Output Power: 325mW into an 8-ohm load.
• Amplifier Class: High-quality AB class for efficient audio amplification.
• Channels: A single mono channel configuration.
• Load Impedance: Optimised for 8-ohm speakers.
• Operating Temperature Range: 0°C to 70°C, suitable for most consumer environments.
• Package: Compact SOIC surface-mount package, 8 pins.
• Dimensions: 33mm (Width) x 43mm (Height) x 15mm (Depth).
• Weight: A lightweight 0.215 grams.

With its combination of low external part count, battery-friendly operation, and reliable performance, the LM386M-1 is a cornerstone IC for a