TMI3257I

@@ -0,0 +1,41 @@+# TMI3257I++**TMI** · DC-DC Converters · SOT-563++TMI3257I from TMI, in a SOT-563. 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 | IN | power_in | Power supply input pin. Accepts 4.5V to 18V (absolute max 20V). Bypass with a low-ESR ceramic capacitor (e.g. 22µF) close to the pin. Also feeds the internal LDO and high-side switch drain. |+| 2 | LX | output | Switching node output. Connects to the external inductor and the low side of the bootstrap capacitor. Absolute max -0.3V to 20V (transient -5V to 22V for <10ns). |+| 3 | GND | power_in | Device ground reference and low-side MOSFET source return. Tie to the system ground plane with a low-impedance connection. |+| 4 | BS | passive | Bootstrap capacitor pin for the floating high-side gate driver supply. A ~0.1µF capacitor must be connected between LX and BS. Absolute max BS voltage 23V. |+| 5 | EN | input | Enable input. Drive high (>~1.1V rising threshold, 100mV hysteresis) to enable the IC; drive low to enter micro-power shutdown. Do not leave EN floating. Absolute max 20V. |+| 6 | FB | input | Output voltage feedback input. Connect to the center of the external resistor divider from VOUT to GND; regulated to VREF = 0.807V typ. Absolute max -0.3V to 6V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TMI |+| Package | SOT-563 |+| Category | PMIC |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `TMI3257I`+- Footprint: `Package_TO_SOT_SMD:SOT-563`+- 3D model: SOT-563 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TMI datasheet](docs/tmi3257i-datasheet.pdf) (15 pp, sha256 `b71a605a61ddbb09`, 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/tmi3257i-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "tmi3257i",+  "version": "0.1.0",+  "type": "component",+  "description": "TMI DC-DC Converters, SOT-563. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "tmi3257i"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "tmi3257i.kicad_sym",+    "tmi3257i.kicad_mod",+    "tmi3257i.glb",+    "tmi3257i.step",+    "tmi3257i.lbr",+    "docs/hero.png",+    "docs/tmi3257i-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file