# MCP1501-20E

**Microchip Tech** · Voltage Reference · SOIC-8

MCP1501-20E from Microchip Tech, 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 | OUT | output | Buffered V_REF output. Sources/sinks up to 20 mA (30 mA absolute max). Nominal 2.048V for the MCP1501-20 variant. In the SOT-23 package the internal feedback connection is made on-die; the output driver is tristated in shutdown. |
| 2 | GND | power_in | System ground / power supply return. Must be tied to system ground. |
| 3 | GND | power_in | System ground / power supply return. Must be tied to system ground. |
| 4 | SHDN | input | Active-low shutdown digital input. Drive low to place the device in shutdown (output tristated). Device must be fully powered up before SHDN is asserted. Drive high (up to V_DD) for normal operation. |
| 5 | GND | power_in | System ground / power supply return. Must be tied to system ground. |
| 6 | VDD | power_in | Power supply input, 2.25V to 5.5V for the MCP1501-20 variant (absolute max 5.5V). Recommend a 0.1 µF decoupling capacitor placed very close to this pin. Also serves as the internal reference input rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `MCP1501-20ET-E/CHY`
- `MCP1501-20EE/SN`
- `MCP1501-20EE/MNY`

## CAD (KiCad official)

- Symbol: `MCP1501-20E`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `mcp1501-20e-etched.step` / `mcp1501-20e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp1501-20e.step` / `mcp1501-20e.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590200497094631424) (39 pp, sha256 `f13d94a440c9f052`, 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/mcp1501-20e-datasheet.pdf)