component
MC34063AD
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8. 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
markdownMC34063AD
Texas Instruments · DC-DC Converters · SOIC-8
MC34063AD from Texas Instruments, in a SOIC-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 | Switch Collector | output | High-current internal switch collector output with maximum voltage rating of 40 V; provides switching stage output for DC-DC conversion topologies. |
| 2 | Switch Emitter | output | High-current internal switch emitter output with maximum voltage rating of 40 V; provides return path for the switching stage. |
| 3 | Timing Capacitor | passive | Attach an external timing capacitor to set the oscillator frequency; frequency is inversely proportional to capacitor value. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | Comparator Inverting Input | input | Comparator inverting input for feedback from resistor divider network; internal threshold voltage is 1.25 V with 2% accuracy. |
| 6 | VCC | power_in | Logic and driver supply voltage with operating range from 3 V to 40 V; should be tied to input voltage VIN. |
| 7 | IPK | input | Current-limit sense input with threshold voltage of 250 mV to 350 mV; monitors internal switch current for short-circuit and overcurrent protection. |
| 8 | Driver Collector | output | Darlington pair driver collector output to drive external high-current switch transistor; maximum collector current is 100 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
MC34063AD - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mc34063ad-etched.step/mc34063ad-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc34063ad.step/mc34063ad.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
bad86a3b68c35766, retrieved 2026-10-03, 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).