ZLDO1117QG33TA

@@ -0,0 +1,44 @@+# ZLDO1117QG33TA++**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223++ZLDO1117QG33TA from Diodes Incorporated, in a SOT-223. 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 | ADJ/GND | power_in | Ground pin for the fixed-mode (3.3V) variant ZLDO1117QG33TA. In adjustable variants, a resistor divider from this pin to VOUT sets the output voltage; for the fixed 3.3V version this pin is tied to system ground. |+| 2 | VOUT | power_out | Regulated 3.3V output (2% tolerance, up to 1A). A minimum 4.7uF capacitor (0.05Ω <= ESR <= 0.5Ω) must be connected from this pin to ground to ensure stability. A larger output capacitor is recommended for improved AC load response. Also connected to the exposed tab. |+| 3 | VIN | power_in | Input supply pin (-0.03V to +18V absolute max; 2.7V to 18V recommended). Typically a large storage capacitor (0.05Ω <= ESR <= 0.5Ω) is connected from this pin to ground to keep the input from sagging below the minimum dropout voltage during load transients. VIN must remain at least 1.3V above VOUT (1.5V for correct operation) for the device to regulate properly. |+| TAB | VOUT (Tab) | power_out | Exposed metal tab electrically connected to VOUT. Used as the primary thermal path; solder to a copper heat-spreading pad on the PCB. Theta_JC = 16 °C/W and Theta_JA = 107 °C/W for SOT-223. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-223 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `ZLDO1117QG33TA`+- `ZLDO1117QG33TAZLDO1117QK33TC`++## CAD (KiCad official)++- Symbol: `ZLDO1117QG33TA`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/ZLDO1117QG33TA.pdf) (14 pp, sha256 `52a05840bdb17cd6`, 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/zldo1117qg33ta-datasheet.pdf)

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