MC34063AG-S08-R

@@ -0,0 +1,52 @@+# MC34063AG-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-R`+- `MC34063AG-S08-T`+- `MC34063AL-D08-T`+- `MC34063AG-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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175445322633216) (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).++[Datasheet PDF](docs/mc34063ag-s08-r-datasheet.pdf)

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