AP2900TB-A1

@@ -0,0 +1,45 @@+# AP2900TB-A1++**Wuxi Chipown Micro electronics** · DC-DC Converters · SOT-23-5L++AP2900TB-A1 from Wuxi Chipown Micro electronics, in a SOT-23-5L. 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 | Input supply voltage, 6 V to 40 V operating (42 V absolute max). Requires a low-ESR decoupling capacitor (1 uF X5R/X7R MLCC in parallel with a 100 uF electrolytic recommended) placed as close as possible between VIN and GND to supply AC current to the internal power MOSFETs. |+| 2 | GND | power_in | Ground pin. Common return for internal control circuitry and the low-side synchronous MOSFET source. Recommended to connect to the ground copper plane via vias for good thermal dissipation and noise suppression. |+| 3 | EN | input | Enable input. High level enables the IC, low level disables the IC (shutdown mode). Must not be tied directly to VIN, and must not be connected to VIN through a series resistor. Drive voltage must be kept below 5 V. Internally pulled up by an approximate 50 uA current source to ~4.5 V, so the IC auto-starts if EN is left floating. If an external pull-down resistor is used to disable, it must be < 4.7 kΩ to guarantee a valid low. |+| 4 | FB | input | Feedback input. Connect to the midpoint of the external output feedback divider to program the output voltage (VFB reference 1.2 V typ). Route away from the SW switching node to minimize noise pickup. |+| 5 | SW | output | Switch node. Drain of the internal high-side P-MOSFET and source of the low-side N-MOSFET; connect to the external inductor with a short, wide, thick trace to minimize EMI and switching loss. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Wuxi Chipown Micro electronics |+| Package | SOT-23-5L |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `AP2900TB-A1TB-A1`++## CAD (KiCad official)++- Symbol: `AP2900TB-A1`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Wuxi Chipown Micro electronics datasheet](docs/ap2900tb-a1-datasheet.pdf) (14 pp, sha256 `c213c0743d731535`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/ap2900tb-a1-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "ap2900tb-a1",+  "version": "0.1.0",+  "type": "component",+  "description": "Wuxi Chipown Micro electronics DC-DC Converters, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "ap2900tb-a1"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "ap2900tb-a1.kicad_sym",+    "ap2900tb-a1.kicad_mod",+    "ap2900tb-a1.glb",+    "ap2900tb-a1.step",+    "ap2900tb-a1.lbr",+    "docs/hero.png",+    "docs/ap2900tb-a1-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file