MCP1700

@@ -0,0 +1,47 @@+# MCP1700++**Microchip Technology** · 250 mA low-quiescent LDO · SOT-23++A 250 mA low-dropout regulator built for battery-powered designs, in SOT-23. What sets it apart is its quiescent current: just 1.6 uA typical, so it barely drains a coin cell or Li-ion when the load is idle. It is offered in fixed output voltages (this page is the 3.3 V MCP1700-3302), holds good line and load regulation, and needs only small 1 uF ceramic input and output capacitors for stability. The dropout is modest for the class, so keep the input at least a couple hundred millivolts above the output at full load. Input up to 6 V.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Regulator ground. Tie to the negative side of the output and input capacitors. Only the LDO bias current (1.6 µA typical) flows out of this pin; the LDO output regulation is referenced to this pin. |+| 2 | VOUT | power_out | Regulated output voltage (1.2 V to 5.0 V depending on ordering suffix). Connect to the positive side of the load and to the positive terminal of a 1 µF ceramic output capacitor. Delivers up to 250 mA (VR ≥ 2.5 V) or 200 mA (VR < 2.5 V). |+| 3 | VIN | power_in | Unregulated input supply voltage, 2.3 V to 6.0 V. Connect a 1 µF ceramic (or tantalum/aluminum electrolytic) input capacitor close to this pin to ensure stable LDO operation. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Low-quiescent LDO regulator |+| Output current | 250 mA |+| Quiescent current | 1.6 µA typ |+| Output voltage | 3.3 V (fixed, this variant) |+| Dropout | 178 mV at 200 mA |+| Input voltage | 2.3-6 V |+| Capacitors | 1 µF ceramic in/out |+| Package | SOT-23 (3-lead) |++## Ordering variants++- `MCP1700T-3302E/TT (SOT-23, 3.3 V)`+- `MCP1700-3002E/TO (TO-92, 3.0 V)`++## CAD (KiCad official)++- Symbol: `Regulator_Linear:MCP1700x-330xxTT`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Technology datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/MCP1700-Low-Quiescent-Current-LDO-20001826E.pdf) (30 pp, sha256 `808bac85cf4d3fea`, 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/mcp1700-datasheet.pdf)

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