SNAS545D may   2004  – august 2023 LM386

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 LM386 with Gain = 20
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Gain Control
          2. 9.2.1.2.2 Input Biasing
        3. 9.2.1.3 Application Curve
      2. 9.2.2 LM386 with Gain = 200
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
      3. 9.2.3 LM386 with Gain = 50
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curve
      4. 9.2.4 Low Distortion Power Wienbridge Oscillator
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
        3. 9.2.4.3 Application Curve
      5. 9.2.5 LM386 with Bass Boost
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
        3. 9.2.5.3 Application Curve
      6. 9.2.6 Square Wave Oscillator
        1. 9.2.6.1 Detailed Design Procedure
        2. 9.2.6.2 Application Curve
      7. 9.2.7 AM Radio Power Amplifier
        1. 9.2.7.1 Design Requirements
        2. 9.2.7.2 Detailed Design Procedure
        3. 9.2.7.3 Application Curve
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
    2. 12.2 Documentation Support
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
  14.   Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
  • P|8
  • DGK|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

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.

Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
LM386N-1 PDIP (8) 9.60 mm × 6.35 mm
LM386N-3 PDIP (8) 9.60 mm × 6.35 mm
LM386N-4 PDIP (8) 9.60 mm × 6.35 mm
LM386M-1 SOIC (8) 4.90 mm × 3.90 mm
LM386MX-1 SOIC (8) 4.90 mm × 3.90 mm
LM386MMX-1 VSSOP (8) 3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
GUID-4B697621-F723-46FA-9846-4CD16B510D78-low.gif Schematic