1 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

2 Applications
• AM-FM Radio Amplifiers
• Portable Tape Player Amplifiers
• Intercoms
• TV Sound Systems
• Line Drivers
• Ultrasonic Drivers
• Small Servo Drivers
• Power Converters

3 Description
The LM386M-1 and LM386MX-1 are power amplifiers
designed for use in low voltage consumer
applications. The gain is internally set to 20 to keep
external part count low, but the addition of an external
resistor and capacitor between pins 1 and 8 increases
the gain to any value from 20 to 200.
The inputs are ground referenced while the output
automatically biases to one-half the supply voltage.
The quiescent power drain is only 24 mW when
operating from a 6-V supply, making the LM386M-1
and LM386MX-1 prefered for battery operation.