MCP16331T-E

@@ -0,0 +1,46 @@+# MCP16331T-E++**Microchip** · DC-DC Converters · SOT-23-6++MCP16331T-E from Microchip, in a SOT-23-6. 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 | BOOST | passive | Boost pin. Supply for the floating high-side driver used to switch the integrated N-channel MOSFET. An external bootstrap capacitor (typ. 100 nF) is connected between BOOST and SW, and a small blocking diode (e.g. 1N4148) charges it from VOUT. VBOOST - VSW must remain within 3.0V to 5.5V for proper high-side drive. |+| 2 | GND | power_in | Device ground / return pin. Input-cap return, output-cap return and GND trace should be as short as possible to minimize noise on this node. |+| 3 | VFB | input | Output voltage feedback pin. Connect to the midpoint of an external resistor divider from VOUT to GND to program the output voltage. The internal reference is 0.800V typical (0.784V to 0.816V); feedback input bias current is ±3 nA typical. |+| 4 | EN | input | Enable pin. Logic-level input with an internal pull-up to VIN, so the device starts even if EN is left floating. Drive low (VIL ≤ 0.4V) or tie to GND to shut the regulator off (shutdown IQ ≈ 6 µA); drive high (VIH ≥ 1.9V) to enable. Absolute maximum is -0.5V to (VIN + 0.3V). |+| 5 | VIN | power_in | Power supply input pin for the power stage and internal biasing, 4.4V to 50V (54V abs max). Decouple to GND with a 4.7 µF to 20 µF ceramic capacitor placed as close as possible to VIN and GND. Undervoltage lockout starts operation at 4.1V typ (4.4V max) and stops at 3.6V typ (3.0V min). |+| 6 | SW | output | Switch node. Drain of the internal 600 mΩ N-channel high-side MOSFET; connects externally to the inductor, freewheeling Schottky diode (100V) and bootstrap capacitor. Absolute maximum VIN-SW is 54V; BOOST-SW is limited to 6.0V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `MCP16331T-ET-E/CH`+- `MCP16331T-ET-E/MNY`++## CAD (KiCad official)++- Symbol: `MCP16331T-E`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip datasheet](docs/mcp16331t-e-datasheet.pdf) (44 pp, sha256 `bfd74d5f66667f16`, retrieved 2026-08-17, tier: manufacturer)+- **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/mcp16331t-e-datasheet.pdf)

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