component
MC34063AG-S08-R
Public Unreviewedby Ray
UTC Unisonic Tech DC-DC Converters, SOP-8. Datasheet-verified pinout, 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
markdownMC34063AG-S08-R
UTC Unisonic Tech · DC-DC Converters · SOP-8
MC34063AG-S08-R from UTC Unisonic Tech, in a SOP-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 Darlington output switch transistor (T1). Rated to 40 V, 1.5 A switch current; connects to the inductor in step-up/inverting topologies or to the load in step-down topology. |
| 2 | Switch Emitter | output | Emitter of the internal Darlington output switch transistor (T1). Rated to 40 V, 1.5 A; typically tied to GND in step-up topology or to the inductor/diode node in step-down topology. |
| 3 | Timing Capacitor | passive | External timing capacitor (CT) pin. The selected capacitor value sets the internal oscillator run rate (typ. charge current 31 uA, discharge current 190 uA); CT ~= 4e-5 * tON. |
| 4 | GND | power_in | Device ground reference return for internal logic, oscillator, comparator, and reference. |
| 5 | Comparator Inverting Input | input | Inverting input of the internal error comparator; non-inverting is tied to the 1.25 V (typ., 1.21-1.29 V) bandgap reference. Driven by the output feedback divider (VOUT = 1.25 * (1 + R2/R1)) to set the regulated output and gate the Darlington output switch. |
| 6 | VCC | power_in | Supply voltage input, 3.0 V to 40 V operating range (40 V absolute max). Standby supply current typ. 2.7 mA (max 4.0 mA). |
| 7 | IPEAK Sense | input | Current-limit sense input. Monitors the voltage drop across an external sense resistor placed in series with VCC; trips the current-limit at typ. 300 mV (250-350 mV) to terminate the switch on-time. RS ~= 0.3 / ISW. |
| 8 | Driver Collector | output | Collector of the internal Darlington driver transistor (T2). Rated to 40 V; typically tied to VCC through a base-drive/current-limit resistor for the internal switch, or used to drive an external NPN/PNP boost transistor for load currents >1.5 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
MC34063AG-S08-RMC34063AG-S08-TMC34063AL-D08-TMC34063AG-D08-T
CAD (KiCad official)
- Symbol:
MC34063AG-S08-R - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (9 pp, sha256
9f905b6ede06557e, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).