MCP1804T-5002I

@@ -0,0 +1,49 @@+# MCP1804T-5002I++**Microchip Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++MCP1804T-5002I from Microchip Tech, in a SOT-89-3. 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. Operating range 2.0V to 28.0V (VIN ≥ VR + 2.0V for regulation). Recommended input capacitor 0.1-1 µF ceramic (X7R) placed close to the pin to keep source impedance low (<10 Ω) and maintain LDO stability. |+| 2 | GND | power_in | Regulator ground / reference terminal. Carries only the LDO bias current (50-60 µA typical) - no high load current. Tie to the negative side of both the input and output capacitors and to the load return; minimize voltage drop between this pin and the load's negative rail because VOUT regulation is referenced to it. |+| 3 | NC | unconnected | No internal connection. This pin is a true 'No Connect' - may be left floating or tied to any convenient net for PCB routing. |+| 4 | ~{SHDN} | input | Active-low shutdown input. Logic-high (V_SHDN_H ≥ 1.1V, up to VIN) enables the regulator; logic-low (V_SHDN_L ≤ 0.35V) disables the output and drops the device to ~0.01 µA shutdown current. Absolute-max range VSS−0.3V to +30V. No internal pull-up/pull-down - this pin must be actively driven to VIN or GND (never left floating) to keep the device stable. |+| 5 | VOUT | power_out | Regulated 5.0V ±2% output (this ordering variant is the -50 = 5.0V option). Delivers up to 150 mA continuous; current-limit ~200 mA typical with foldback to ~40 mA into a hard short. Requires 0.1-1 µF ceramic (X7R/X5R), tantalum, or aluminum-electrolytic output capacitor placed close to the pin for stability; larger values improve dynamic load response and PSRR. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip Tech |+| Package | SOT-89-3 |+| Category | Power Management (PMIC) |+| Pins | 5 |++## Ordering variants++Same part, different packaging or reel option.++- `MCP1804T-5002IOT`+- `MCP1804T-5002IMT`+- `MCP1804T-5002IMB`+- `MCP1804T-5002IDB`++## CAD (KiCad official)++- Symbol: `MCP1804T-5002I`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884731190784000) (36 pp, sha256 `f28199ed78f23549`, 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/mcp1804t-5002i-datasheet.pdf)

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