component
MC34063ADR2G
Public Made by Adomby adom
onsemi DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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MC34063ADR2G
onsemi · DC-DC Converters · SOIC-8
MC34063ADR2G from onsemi, 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 | Switch Collector | output | Collector of the internal NPN output switch transistor Q1; maximum VCE 40 V; saturation voltage ≤1.3 V (Darlington, ISW=1.0 A) or ≤0.7 V (forced β=20, ISW=1.0 A); maximum switch current 1.5 A; connected to Pin 8 for Darlington configuration. |
| 2 | Switch Emitter | output | Emitter of the internal output switch transistor Q1; maximum switch current 1.5 A; the external sense resistor Rsc (= 0.3/Ipk) is placed between this pin and ground to set the peak current limit. |
| 3 | Timing Capacitor | passive | External oscillator timing capacitor CT connection; CT = 1.0 nF yields approximately 33 kHz free-running frequency; CT is calculated as 4.0×10⁻⁵ × ton for converter design. |
| 4 | GND | power_in | Ground reference for the entire device; all internal signals and the 1.25 V reference are referenced to this pin. |
| 5 | Comparator Inverting Input | input | Inverting input of the feedback comparator; threshold voltage 1.25 V typical (1.21 V min, 1.29 V max over full temperature range); an external resistor divider from the regulated output to this pin sets the output voltage via Vout = 1.25×(1 + R2/R1); input bias current −400 nA maximum. |
| 6 | VCC | power_in | Positive power supply voltage input; operating range 3.0 V to 40 V; maximum supply current 4.0 mA (VCC = 5.0 V to 40 V, CT = 1.0 nF); threshold voltage line regulation 5.0 mV maximum (MC34063A) over 3.0 V to 40 V range. |
| 7 | Ipk Sense | input | Peak switch current limit sense input; the oscillator is forced to immediately discharge CT (ending the ON time) when the voltage at this pin reaches 300 mV typical (250 mV min, 350 mV max); the external sense resistor Rsc = 0.3/Ipk(switch) is placed between this pin and the switch current path. |
| 8 | Driver Collector | output | Collector of the internal driver transistor Q2; maximum driver collector current 100 mA, maximum collector voltage 40 V; connected to Pin 1 (Switch Collector) for the Darlington output switch configuration, or used to drive the base of an external NPN/PNP transistor for output currents exceeding 1.5 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
MC34063ADR2G - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mc34063adr2g-etched.step/mc34063adr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc34063adr2g.step/mc34063adr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (17 pp, sha256
f7babf6a0b5180ec, retrieved 2026-09-21, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).