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RT9193-28GB
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Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+48@@ -0,0 +1,48 @@+# RT9193-28GB++**Richtek Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++RT9193-28GB from Richtek Tech, 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 | VIN | power_in | Power input voltage. Operating range 2.5V to 5.5V (absolute max 6V). Bypass with a 1uF ceramic (X7R) capacitor to GND close to the pin. |+| 2 | GND | power_in | Ground reference for the regulator. Must be connected to system ground. |+| 3 | EN | input | Chip Enable (Active High). High-impedance TTL-compatible input; VIH >= 1.2V enables, VIL <= 0.4V shuts down (IBSD ~0-100nA). A 100kOhm pull-down to GND is recommended when the driving signal may float. EN input range 0V to 5.5V. |+| 4 | BP | passive | Reference Noise Bypass. May be left floating; for lowest output noise (typ 100uVRMS, 10Hz-100kHz) connect a 22nF capacitor from BP to GND. |+| 5 | VOUT | power_out | Regulated output voltage. Fixed 2.8V (RT9193-28 option) at up to 300mA with 220mV dropout. Requires a 1uF ceramic (X7R) output capacitor for stability; current-limited to typ 400mA with thermal shutdown at 165degC. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Richtek Tech |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `RT9193-28GBB`+- `RT9193-28GBU5`+- `RT9193-28GBJ5`+- `RT9193-28GBQW`+- `RT9193-28GBF`++## CAD (KiCad official)++- Symbol: `RT9193-28GB`+- 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:** [Richtek Tech datasheet](docs/rt9193-28gb-datasheet.pdf) (14 pp, sha256 `b14e82017ba100e6`, 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/rt9193-28gb-datasheet.pdf)
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