component
LM5021MMX-2
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, 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
markdownLM5021MMX-2
Texas Instruments · AC-DC Controllers And Regulators · VSSOP-8-0.65mm
LM5021MMX-2 from Texas Instruments, in a VSSOP-8-0.65mm. 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 | COMP | input | Control input for PWM and Hiccup comparators with 5kΩ internal pull-up resistor for opto-coupler biasing. |
| 2 | VIN | power_in | Input voltage to start-up regulator with 36V internal zener diode clamp. |
| 3 | VCC | power_out | 8.5V nominal regulated output of linear bias supply regulator for controller and gate drive. |
| 4 | OUT | output | MOSFET gate driver output capable of 0.3A peak source current and 0.7A peak sink current. |
| 5 | GND | power_in | Ground return. |
| 6 | CS | input | Current sense input with 0.5V threshold for cycle-by-cycle current limiting and 90ns leading edge blanking. |
| 7 | RT | output | Oscillator timing resistor pin accepting external resistor to ground for frequency setting and external clock synchronization pulses. |
| 8 | SS | output | Soft-start and hiccup timing pin driven by internal 22µA current source for startup ramp control. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM5021MMX-2 - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files:
lm5021mmx-2-etched.step/lm5021mmx-2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5021mmx-2.step/lm5021mmx-2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
039278930e2432ef, retrieved 2026-09-22, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).