TD6811

@@ -0,0 +1,47 @@+# TD6811++**Techcode Semicon** · DC-DC Converters · TSOT-23-5++TD6811 from Techcode Semicon, in a TSOT-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 | RUN | input | Run Control Input. Forcing this pin above 1.5V enables the part; forcing it below 0.3V shuts down the device. In shutdown, all functions are disabled, drawing <1uA supply current. Do not leave RUN floating. |+| 2 | GND | power_in | Ground pin. Return for the internal power stage and control circuitry; must provide a low-impedance return to the input decoupling capacitor. |+| 3 | SW | output | Switch Node connection to the external inductor. Connects to the drains of the internal main P-channel and synchronous N-channel power MOSFET switches. Peak SW current rated 1.8A. |+| 4 | VIN | power_in | Main Supply Pin, 2.5V to 5.5V input range. Must be closely decoupled to GND (Pin 2) with a 2.2uF or greater ceramic capacitor. |+| 5 | VFB/VOUT | input | Dual-function feedback pin. On the adjustable version (TD6811, blank suffix) this is VFB, which receives the feedback voltage from an external resistive divider across the output and regulates to the 0.6V internal reference. On fixed-output versions (TD6811-12/-15/-18) it is VOUT, connecting directly to the output rail so an internal resistive divider sets 1.2V/1.5V/1.8V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Techcode Semicon |+| Package | TSOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `TD6811T`+- `TD6811T12`+- `TD6811T15`+- `TD6811T18`++## CAD (KiCad official)++- Symbol: `TD6811`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: TSOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Techcode Semicon datasheet](docs/td6811-datasheet.pdf) (17 pp, sha256 `abf6be4c3bb33c72`, 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/td6811-datasheet.pdf)

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