component
LM386MMX-1
Public Made by Adomby adom
Texas Instruments Audio Power OpAmps, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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LM386MMX-1
Texas Instruments · Audio Power OpAmps · VSSOP-8
LM386MMX-1 from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GAIN | passive | Gain setting pin; with pins 1 and 8 open the internal 1.35-kΩ resistor sets gain to 20 (26 dB), and a capacitor from pin 1 to 8 raises gain up to 200 (46 dB). |
| 2 | -INPUT | input | Inverting input, ground-referenced and biased to ground with a 50-kΩ resistor. |
| 3 | +INPUT | input | Noninverting input, ground-referenced and biased to ground with a 50-kΩ resistor. |
| 4 | GND | power_in | Ground reference. |
| 5 | VOUT | output | Amplifier output, automatically biased to half the supply voltage and able to drive loads from 4 Ω to 32 Ω. |
| 6 | VS | power_in | Power supply voltage, 4 V to 12 V for the LM386MMX-1, with a capacitor to GND recommended close to the pin. |
| 7 | BYPASS | passive | Bypass decoupling path, typically connected to ground through a 10 µF capacitor. |
| 8 | GAIN | passive | Gain setting pin; a resistor and capacitor between pins 1 and 8 set gain from 20 to 200. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage (absolute maximum) | VCC | 15 | V | LM386N-1/-3, LM386M-1 | 4 | ||
| Package Dissipation | 0.595 | W | LM386MM-1 | 4 | |||
| Input Voltage | VI | -0.4 | 0.4 | V | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| ESD HBM | V(ESD) | -1000 | 1000 | V | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 | 4 | |
| ESD CDM | V(ESD) | -1000 | 1000 | V | Charged-device model (CDM), per JEDEC specification JESD22-C101 | 4 | |
| Supply Voltage | VCC | 4 | 12 | V | 4 | ||
| Speaker Impedance | 4 | Ω | 4 | ||||
| Analog input voltage | VI | -0.4 | 0.4 | V | 4 | ||
| Operating free-air temperature | TA | 0 | 70 | °C | 4 | ||
| Junction-to-ambient thermal resistance | RθJA | 169.3 | °C/W | DGK (VSSOP) 8 | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 73.1 | °C/W | DGK (VSSOP) 8 | 4 | ||
| Junction-to-board thermal resistance | RθJB | 100.2 | °C/W | DGK (VSSOP) 8 | 4 | ||
| Junction-to-top characterization parameter | ψJT | 9.2 | °C/W | DGK (VSSOP) 8 | 4 | ||
| Junction-to-board characterization parameter | ψJB | 99.1 | °C/W | DGK (VSSOP) 8 | 4 | ||
| Operating Supply Voltage | VS | 4 | 12 | V | LM386N-1, -3, LM386M-1, LM386MM-1 | 5 | |
| Quiescent Current | IQ | 4 | 8 | mA | VS = 6 V, VIN = 0 | 5 | |
| Output Power | POUT | 250 | 325 | mW | VS = 6 V, RL = 8 Ω, THD = 10% (LM386N-1, LM386M-1, LM386MM-1) | 5 | |
| Voltage Gain | AV | 26 | dB | VS = 6 V, f = 1 kHz | 5 | ||
| Voltage Gain (10 µF pin 1 to 8) | AV | 46 | dB | 10 µF from Pin 1 to 8 | 5 | ||
| Bandwidth | BW | 300 | kHz | VS = 6 V, Pins 1 and 8 Open | 5 | ||
| Total Harmonic Distortion | THD | 0.2 | % | VS = 6 V, RL = 8 Ω, POUT = 125 mW, f = 1 kHz, Pins 1 and 8 Open | 5 | ||
| Power Supply Rejection Ratio | PSRR | 50 | dB | VS = 6 V, f = 1 kHz, CBYPASS = 10 μF, Pins 1 and 8 Open, Referred to Output | 5 | ||
| Input Resistance | RIN | 50 | kΩ | 5 | |||
| Input Bias Current | IBIAS | 250 | nA | VS = 6 V, Pins 2 and 3 Open | 5 |
CAD (KiCad official)
- Symbol:
LM386MMX-1 - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
lm386mmx-1-etched.step/lm386mmx-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm386mmx-1.step/lm386mmx-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (34 pp, sha256
0fbdb3de058ef6b0, retrieved 2026-10-23, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).