component
LMR61428XMMX
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
markdownLMR61428XMMX
Texas Instruments · DC-DC Converters · VSSOP-8-0.65mm
LMR61428XMMX 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 | PGND | power_in | Power ground return for power stage circuits. |
| 2 | EN | input | Active-low shutdown input; regulator disabled below 0.15×VDD, enabled above 0.7×VDD; absolute maximum rating -0.5V to 10V. |
| 3 | FREQ | input | Frequency programming input; external resistor connected between FREQ and VDD sets switching frequency from 300kHz to 2MHz; 100µA maximum current rating. |
| 4 | FB | input | Output voltage feedback input from resistor divider for regulated output voltage 1.24V to 14V; typical pin voltage 1.24V; absolute maximum rating -0.5V to 10V. |
| 5 | SGND | power_in | Signal ground for feedback and control circuits. |
| 6 | VDD | power_in | Power supply input for internal control circuitry; operating range 2.5V to 5V; absolute maximum rating -0.5V to 10V. |
| 7 | BOOT | power_in | Bootstrap supply input for MOSFET gate driver; operating range 0V to 10V; absolute maximum rating -0.5V to 10V. |
| 8 | SW | output | Drain of internal N-channel MOSFET power switch; boost converter switching node connecting to inductor and freewheeling diode; absolute maximum rating -0.5V to 14.5V with 2.85A peak switch current limit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Power Supply Chip |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LMR61428XMMX - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files:
lmr61428xmmx-etched.step/lmr61428xmmx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmr61428xmmx.step/lmr61428xmmx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (22 pp, sha256
d55e65d8766ee830, retrieved 2026-10-07, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).