TPS3820-50DBVR

@@ -0,0 +1,46 @@+# TPS3820-50DBVR++**Texas Instruments** · Supervisor and Reset ICs · SOT-23-5++TPS3820-50DBVR from Texas Instruments, in a SOT-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 | RESET | output | Active-low reset output, push-pull. Driven low while VDD is below the 4.55 V threshold (VIT-) and held low for the reset delay period (typ 200 ms) after VDD recovers, or during a manual/watchdog reset. VOL = 0.4 V max at IOL = 3 mA; VOH = VDD - 1.5 V at IOH = -120 uA. |+| 2 | GND | power_in | Ground reference for the device. |+| 3 | MR | input | Manual reset input, active low. Pulling MR low forces RESET low; RESET stays low as long as MR is low and for the reset delay after MR returns high. Internal ~52 kOhm pull-up to VDD; leave open or tie to VDD if unused. VIL <= 0.3 x VDD, VIH >= 0.7 x VDD. |+| 4 | WDI | input | Watchdog input. If WDI stays high or low longer than the watchdog timeout (typ 200 ms for TPS3820) a reset is triggered; a rising or falling edge on WDI clears the timer. Tie to high impedance if unused to avoid spurious resets. VIL <= 0.3 x VDD, VIH >= 0.7 x VDD. |+| 5 | VDD | power_in | Supply input and monitored voltage. Operating range 1.1 V to 5.5 V (absolute max 6 V); monitored against the fixed 4.55 V negative-going threshold for the -50 variant. Bypass with a 0.1 uF ceramic near the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `TPS3820-50DBVRDBVR`+- `TPS3820-50DBVRDBVT`++## CAD (KiCad official)++- Symbol: `TPS3820-50DBVR`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](docs/tps3820-50dbvr-datasheet.pdf) (35 pp, sha256 `f0ddd0a85e54c699`, 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/tps3820-50dbvr-datasheet.pdf)

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