component
H7544-1
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Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout settled in review by an AI reviewer against the manufacturer's datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# H7544-1++**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23++H7544-1 from Shanghai Siproin Microelectronics, in a SOT-23. 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 | GND | power_in | Ground / common return for the regulator. Connect to system ground; single-point ground is recommended per the application circuits. |+| 2 | VIN | power_in | Unregulated input supply. Absolute max 18V; typical operating input up to 15V. A 10uF input decoupling capacitor (C1) to GND is recommended. |+| 3 | VOUT | power_out | Regulated 4.4V output (min 4.312V, typ 4.400V, max 4.488V at IOUT=10mA). Sources up to 150mA. A 10uF output capacitor (C2) to GND is recommended for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Siproin Microelectronics |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `H7544-1TR`+- `H7544-1TG`+- `H7544-1PR`+- `H7544-1PG`+- `H7544-1NR`+- `H7544-1NG`++## CAD (KiCad official)++- Symbol: `H7544-1`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](docs/h7544-1-datasheet.pdf) (12 pp, sha256 `68d89a2084487dc3`, 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/h7544-1-datasheet.pdf)
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