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H7211-33M5R
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Shanghai Siproin Microelectronics 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+45@@ -0,0 +1,45 @@+# H7211-33M5R++**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++H7211-33M5R from Shanghai Siproin Microelectronics, 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 pin. Operating input voltage range 2.0V to 6.0V (absolute max -0.3V to 7V). Bypass to VSS with a low-ESR ceramic capacitor (typically 1uF to 10uF). |+| 2 | VSS | power_in | Ground reference for the regulator. Common return for input, output, and CE. |+| 3 | CE | input | Chip Enable input. CE high (>=1.5V, up to VIN) enables the regulator; CE low (<=0.3V) puts the device into shutdown (ISTBY typ 0.1uA) and activates the output-capacitor discharge shunt (~80 ohm). |+| 4 | NC | unconnected | No internal connection on the SOT23-5 package. May be left floating or tied to VSS for mechanical stability. |+| 5 | VOUT | power_out | Regulated LDO output. Fixed voltage per orderable suffix (-33 = 3.3V), up to 300mA. Requires a low-ESR ceramic output capacitor (typically 1uF to 10uF); internal 80 ohm discharge shunt pulls VOUT down when CE is low. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Siproin Microelectronics |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `H7211-33M5RM5R`+- `H7211-33M5RDR`++## CAD (KiCad official)++- Symbol: `H7211-33M5R`+- 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:** [Shanghai Siproin Microelectronics datasheet](docs/h7211-33m5r-datasheet.pdf) (9 pp, sha256 `b0219dac2623b496`, retrieved 2026-08-17, tier: lcsc)+- **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/h7211-33m5r-datasheet.pdf)
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