RT9711AGB

@@ -0,0 +1,83 @@+# RT9711AGB++**Richtek Tech** · AC-DC Controllers and Regulators · SOT-23-5++RT9711AGB 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 | FLG | output | Open-drain fault flag output. Asserts low (typ. 20 Ω pull-down, IFLG_OFF ≤ 1 μA leakage when off) after a 12 ms (typ.) delay when an over-current, thermal-shutdown, or reverse-current fault is detected. Requires an external 10 kΩ-100 kΩ pull-up resistor to the USB controller supply. Absolute-max flag voltage 6.5 V. |+| 2 | GND | power_in | Device ground / return for the internal high-side switch, charge pump, bias, and logic. Tie to the system ground plane close to the CIN and COUT return paths. |+| 3 | EN | input | Chip enable input (active-high on the RT9711A variant). Logic-high (VIH ≥ 2.0 V) turns the internal N-MOSFET switch on; logic-low (VIL ≤ 0.8 V) turns it off. Input range 0 V to 5.5 V, input leakage 0.01 μA typ. Must never be left floating. When disabled the pin is pulled low internally through ~75 Ω (RDS shutdown). |+| 4 | VIN | power_in | Power input to the internal high-side N-MOSFET switch and to the internal bias/charge-pump/UVLO circuitry. Recommended operating range 2.5 V to 5.5 V (absolute max 6.5 V). Decouple locally with a 1 μF CIN capacitor to GND. UVLO releases at ~1.7 V rising. |+| 5 | VOUT | power_out | Switched power output (drain of the internal N-MOSFET) to the downstream USB port/load. Delivers up to 1.5 A continuous (current limit ILIM = 2.5 A typ., 1.6-3.2 A). RDS(on) 80 mΩ typ. at VIN = 5 V, IOUT = 1 A. A low-ESR ≥150 μF aluminum/tantalum bulk capacitor plus a 10 μF ceramic to GND is recommended to meet the USB VBUS 330 mV droop requirement. Can be forced higher than VIN when off (no body diode). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Richtek Tech |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `RT9711AGBAGB`+- `RT9711AGBAPB`+- `RT9711AGBBGB`+- `RT9711AGBBPB`+- `RT9711AGBCGB`+- `RT9711AGBCPB`+- `RT9711AGBDGB`+- `RT9711AGBDPB`+- `RT9711AGBAGBG`+- `RT9711AGBAPBG`+- `RT9711AGBBGBG`+- `RT9711AGBBPBG`+- `RT9711AGBCGBG`+- `RT9711AGBCPBG`+- `RT9711AGBDGBG`+- `RT9711AGBDPBG`+- `RT9711AGBAGJ5`+- `RT9711AGBAPJ5`+- `RT9711AGBBGJ5`+- `RT9711AGBBPJ5`+- `RT9711AGBCGJ5`+- `RT9711AGBCPJ5`+- `RT9711AGBDGJ5`+- `RT9711AGBDPJ5`+- `RT9711AGBAGS`+- `RT9711AGBAPS`+- `RT9711AGBBGS`+- `RT9711AGBBPS`+- `RT9711AGBCGS`+- `RT9711AGBCPS`+- `RT9711AGBDGS`+- `RT9711AGBDPS`+- `RT9711AGBAGF`+- `RT9711AGBAPF`+- `RT9711AGBBGF`+- `RT9711AGBBPF`+- `RT9711AGBCGF`+- `RT9711AGBCPF`+- `RT9711AGBDGF`+- `RT9711AGBDPF`++## CAD (KiCad official)++- Symbol: `RT9711AGB`+- 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/rt9711agb-datasheet.pdf) (17 pp, sha256 `fe8722ee5da59baf`, 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/rt9711agb-datasheet.pdf)