TP181C33S5

@@ -0,0 +1,47 @@+# TP181C33S5++**TECH PUBLIC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++TP181C33S5 from TECH PUBLIC, in a SOT-23-5. 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 | VIN | power_in | Unregulated supply input. Absolute maximum -0.3 V to +20 V; recommended operating range up to 18 V. Bypass to GND with a 1 uF (1-10 uF) ceramic capacitor (X5R/X7R) close to the pin. For VIN > 12 V hot-plug conditions, an electrolytic or tantalum capacitor is recommended to absorb inrush spikes that could otherwise exceed 30 V. |+| 2 | GND | power_in | Device ground reference for the internal voltage reference and control circuitry. Tie directly to the system ground plane. |+| 3 | CE | input | Chip enable (active high). VCEH >= 1.3 V enables the regulator; VCEL <= 0.7 V disables it. Absolute maximum range is GND-0.3 V to VIN+0.3 V. When CE is low (VCE=0V), the output is actively discharged through an internal ~500 Ohm resistor (RDCHG). |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to GND for mechanical stability. Datasheet marks this pin as 未接 (not connected) for the SOT-23-5 package. |+| 5 | VOUT | power_out | Regulated 3.3 V output (min 3.234 V, max 3.366 V at VIN=4.3 V, IOUT=30 mA). Maximum output current 300 mA; short-circuit current limited to ~40 mA (ISHORT) with over-current protection at ~500 mA (ILIMIT). Requires a 1 uF (1-10 uF) X5R/X7R ceramic output capacitor to GND; absolute max range GND-0.3 V to +7 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TECH PUBLIC |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `TP181C33S5S5`+- `TP181C33S5S3L`+- `TP181C33S5T3`+- `TP181C33S5D6`++## CAD (KiCad official)++- Symbol: `TP181C33S5`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TECH PUBLIC datasheet](docs/tp181c33s5-datasheet.pdf) (9 pp, sha256 `a7941e6e5dad4048`, 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/tp181c33s5-datasheet.pdf)

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