component
LM3477MMX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, VSSOP-8-0.65mm. Pinout cross-checked by two models against the datasheet, 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
markdownLM3477MMX
Texas Instruments · DC-DC Converters · VSSOP-8-0.65mm
LM3477MMX from Texas Instruments, in a VSSOP-8-0.65mm. 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 | ISEN | input | Current sense input pin; the voltage across the external sense resistor is fed into this pin, and the programmed current limit and hysteretic threshold depend on it. |
| 2 | COMP/SD | input | Compensation pin with an RC network for control-loop compensation, and pulling this pin below 0.65V shuts the device down. |
| 3 | FB | input | Feedback pin; the output voltage must be set with a resistor divider so that 1.270V appears at this pin. |
| 4 | GND | power_in | Ground pin. |
| 5 | SW | passive | Switch node that connects to the source of the external MOSFET and serves as the reference for the bootstrap capacitor on CB. |
| 6 | DR | output | Drive pin that connects to the gate of the external MOSFET. |
| 7 | CB | passive | Bootstrap pin; a capacitor must be connected between CB and SW (pin 5), and the voltage developed across it provides the gate drive for the external MOSFET. |
| 8 | VIN | power_in | Power supply input pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM3477MMX - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files:
lm3477mmx-etched.step/lm3477mmx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3477mmx.step/lm3477mmx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
e8ebe7c28eb86758, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).