TPS3839

@@ -0,0 +1,46 @@+# TPS3839++**Texas Instruments** · Voltage supervisor / reset IC · SOT-23-3++Ultralow-power (150 nA typical) supply voltage supervisor in a 3-pin SOT-23 package. It watches VDD against a fixed threshold and drives an active-low, push-pull RESET that can directly drive an MCU reset pin: RESET is asserted while VDD is below the threshold (plus a reset time delay) and released once the supply is good. It runs from 0.9 to 6.5 V and needs no external components. The default brown-out / power-good watchdog for battery devices where every nanoamp counts.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Ground reference for the supervisor. Connect to the system ground plane. |+| 2 | RESET | output | Active-low reset output with push-pull drive; capable of directly driving input pins. RESET is asserted low whenever VDD is below the factory-trimmed threshold voltage and remains low for the reset delay (t_d = 200 ms typ) after VDD rises above the threshold plus hysteresis. Absolute maximum RESET pin current is +/-10 mA. |+| 3 | VDD | power_in | Input supply voltage, 0.9 V to 6.5 V (absolute max 7 V). Bypass to GND with a 0.1 uF ceramic capacitor placed close to the device. Supply current is 150 nA typical. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Voltage supervisor / reset IC |+| Quiescent current | 150 nA typ (ultralow power) |+| Supply (VDD) | 0.9-6.5 V (abs max 7 V) |+| RESET output | Active-low, push-pull |+| Threshold | Fixed (factory-set option) |+| External parts | None required |+| Package | SOT-23-3 |+| Body (L×W×H) | 2.9 × 1.3 × 1.1 mm |++## Ordering variants++- `TPS3839xxxDBVR (SOT-23, tape & reel)`++## CAD (KiCad official)++- Symbol: `Power_Supervisor:TPS3839DBZ`+- 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:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tps3839.pdf) (35 pp, sha256 `5f9a9581d1b8df7f`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tps3839-datasheet.pdf)

@@ -0,0 +1,35 @@+{+  "slug": "tps3839",+  "version": "0.1.0",+  "type": "component",+  "description": "TI ultralow-power voltage supervisor, SOT-23. 150 nA, push-pull active-low RESET, VDD 0.9-6.5 V. Datasheet-verified.",+  "tags": [+    "component",+    "supervisor",+    "reset-ic",+    "voltage-monitor",+    "sot-23",+    "texas-instruments"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "tps3839.kicad_sym",+    "tps3839.kicad_mod",+    "tps3839.glb",+    "docs/hero.png",+    "docs/tps3839-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file