RH791A

@@ -0,0 +1,41 @@+# RH791A++**RONGHE Microelectronics** · USB Converters · SOT-23-5L++RH791A from RONGHE Microelectronics, in a SOT-23-5L. 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 | NC | unconnected | No connect. Pin is not internally bonded; leave floating or tie as convenient during PCB layout. |+| 2 | GND | power_in | Negative supply / ground return for the device. Connect to the system 0 V rail. |+| 3 | VDD | power_in | Positive supply, 4.5-5.5 V (typ. 5.0 V). Typical operating current 140 uA. A ~500 Ω-1 kΩ series resistor from VBUS and a 1 uF bypass cap to GND are recommended to guard against AC-DC overshoot up to 7-9 V. |+| 4 | DP | bidirectional | USB D+ data line to the downstream USB connector. Driven to 2.7 V (Divider3, 12 W Apple) typical; also supports 1.2 V (Samsung), short-to-DM (BC1.2 DCP / CTIS YD/T 1591-2009). ESD >6.5 kV HBM. |+| 5 | DM | bidirectional | USB D- data line to the downstream USB connector. Driven to 2.7 V (Divider3, 12 W Apple) typical; also supports 1.2 V (Samsung), short-to-DP (BC1.2 DCP / CTIS YD/T 1591-2009). ESD >6.5 kV HBM. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | RONGHE Microelectronics |+| Package | SOT-23-5L |+| Category | Interface |+| Pins | 5 |++## CAD (KiCad official)++- Symbol: `RH791A`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [RONGHE Microelectronics datasheet](docs/rh791a-datasheet.pdf) (7 pp, sha256 `858bd6993b5b7770`, 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/rh791a-datasheet.pdf)

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