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AP3842CMTR-E1
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Diodes Incorporated AC-DC Controllers and Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+54@@ -0,0 +1,54 @@+# AP3842CMTR-E1++**Diodes Incorporated** · AC-DC Controllers and Regulators · SOIC-8++AP3842CMTR-E1 from Diodes Incorporated, 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 | COMP | output | Error Amplifier output, made available for external loop compensation (typically an R-C network to VFB). |+| 2 | VFB | input | Inverting input of the Error Amplifier. Normally connected to the switching power supply output through a resistor divider; internal reference is 2.50 V. |+| 3 | ISENSE | input | Current-sense input. A voltage proportional to inductor/switch current is applied here; PWM uses this to terminate output switch conduction on a cycle-by-cycle basis (internal 1 V current-limit threshold). |+| 4 | RT/CT | passive | Oscillator timing pin. Frequency and maximum duty cycle are programmed by connecting resistor RT to VREF and capacitor CT to ground. Operation up to 500 kHz. |+| 5 | GND | power_in | Combined control circuitry and power ground. All voltages are referenced to this pin. |+| 6 | OUTPUT | output | Totem-pole gate-drive output for an external power MOSFET. Peak sink/source currents up to ±1 A. |+| 7 | VCC | power_in | Positive supply of the control IC. Absolute maximum 30 V; UVLO on/off thresholds of 16 V/10 V (AP3842C). |+| 8 | VREF | power_out | 5 V reference output. Provides charging current for the oscillator timing capacitor CT through resistor RT and may be used to bias external circuitry. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `AP3842CMTR-E1`+- `AP3842CMTR-G1`+- `AP3842CMTR-E1CM-E1`+- `AP3842CMTR-E1CM-G1`+- `AP3842CMTR-E1CP-E1`+- `AP3842CMTR-E1CP-G1`++## CAD (KiCad official)++- Symbol: `AP3842CMTR-E1`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](docs/ap3842cmtr-e1-datasheet.pdf) (14 pp, sha256 `becb61c7269e054e`, 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/ap3842cmtr-e1-datasheet.pdf)
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