UMC4NTR

@@ -0,0 +1,46 @@+# UMC4NTR++**ROHM** · Battery Management · SOT-353++UMC4NTR from ROHM, in a SOT-353. 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 | DTr2_B | input | Base input of DTr2 (PNP, DTA114Y-equivalent) through internal 10kΩ series resistor R1. 47kΩ R2 sits between base and emitter. Absolute-max VIN = −40V / +6V. |+| 2 | DTr2_E | passive | Emitter of DTr2 (PNP). Typically connected to VCC (positive supply) in a high-side switch topology. Absolute-max VCC = −50V. |+| 3 | DTr1_B | input | Base input of DTr1 (NPN, DTC114E-equivalent) through internal 47kΩ series resistor R1. 47kΩ R2 sits between base and emitter (R2/R1 ≈ 1). Absolute-max VIN = +40V / −10V. |+| 4 | DTr1_E | passive | Emitter of DTr1 (NPN). Typically connected to GND in a low-side switch topology. |+| 5 | DTr1_C/DTr2_C | output | Collector output. In dual DTR packages such as UMC4N the two collectors are frequently brought out on a shared or adjacent pin; check ROHM's specific UMC4N pinout for whether pin 5 is DTr1 collector only, DTr2 collector only, or common. Absolute-max IO/IC ≈ 100mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ROHM |+| Package | SOT-353 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `UMC4NTR`+- `UMC4NTREMC4T2R`+- `UMC4NTRFMC4AT148`++## CAD (KiCad official)++- Symbol: `UMC4NTR`+- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`+- 3D model: SOT-353 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ROHM datasheet](docs/umc4ntr-datasheet.pdf) (3 pp, sha256 `1297e7ec9f8c13b4`, 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/umc4ntr-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "umc4ntr",+  "version": "0.1.0",+  "type": "component",+  "description": "ROHM Battery Management, SOT-353. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "umc4ntr"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "umc4ntr.kicad_sym",+    "umc4ntr.kicad_mod",+    "umc4ntr.glb",+    "umc4ntr.step",+    "umc4ntr.lbr",+    "docs/hero.png",+    "docs/umc4ntr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file