component
LM3578AMX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM3578AMX
Texas Instruments · DC-DC Converters · SOIC-8
LM3578AMX from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | -INPUT | input | Inverting comparator input with an internal 1.0V reference; input current should be limited to less than 5 mA if driven above the reference voltage. |
| 2 | +INPUT | input | Non-inverting comparator input with an internal 1.0V reference; input current should be limited to less than 5 mA if driven above the reference voltage. |
| 3 | OSC | passive | Timing capacitor pin; a single external capacitor from this pin sets the oscillator switching frequency (fOSC = 8x10^-5/C1) from <1 Hz to 100 kHz. |
| 4 | GND | power_in | Ground reference pin for the device. |
| 5 | EMITTER | output | Emitter of the output switching transistor, rated -1V to +50V with respect to ground; must not be pulled more than 1V below ground (0.6V for TJ >= 100C). |
| 6 | COLLECTOR | output | Collector of the output switching transistor, rated -0.3V to +50V with respect to ground, capable of switching up to 750 mA with saturation voltage less than 0.9V. |
| 7 | CURRENT LIMIT | input | Current limit sense input that may be referenced to either ground or VIN; activates cycle-by-cycle current limiting when pulled 110 mV away from the reference (80 mV min to 160 mV max). |
| 8 | VIN | power_in | Supply voltage input, operating from 2V to 40V (total supply voltage absolute maximum 50V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM3578AMX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm3578amx-etched.step/lm3578amx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3578amx.step/lm3578amx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
6b628780505f380b, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(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).