SSP7903P50JR

@@ -0,0 +1,56 @@+# SSP7903P50JR++**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252++SSP7903P50JR from Shanghai Siproin Microelectronics, in a TO-252. 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 | Unregulated input supply. Absolute maximum 40V, minimum operating 2.2V; recommend VIN >= VOUT + 2V for regulation. Bypass to GND with a 10µF (or 2.2-4.7µF ceramic) capacitor close to the pin. |+| 2 | GND | power_in | Device ground reference. Tie to system single-point ground; the TO-252 tab is thermally/electrically tied to this pin and should be soldered to a copper area to improve power dissipation (PD ≈ 1800mW for TO-252). |+| 3 | VOUT | power_out | Regulated 5.0V ±2% output (P50 option). Delivers up to 1A with ~1000mV dropout at 1A (4mV at 1mA), current-limited to ~1.8A with fold-back and short-circuit protection (~120mA short-circuit current). Bypass to GND with a 10µF (or 2.2-4.7µF ceramic) capacitor for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Siproin Microelectronics |+| Package | TO-252 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `SSP7903P50JRJx`+- `SSP7903P50JRJR`+- `SSP7903P50JRJG`+- `SSP7903P50JRPx`+- `SSP7903P50JRPR`+- `SSP7903P50JRPG`+- `SSP7903P50JRPBx`+- `SSP7903P50JRPBR`+- `SSP7903P50JRPBG`+- `SSP7903P50JRFx`+- `SSP7903P50JRFR`+- `SSP7903P50JRFG`+- `SSP7903P50JRFBx`+- `SSP7903P50JRFBR`+- `SSP7903P50JRFBG`++## CAD (KiCad official)++- Symbol: `SSP7903P50JR`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](docs/ssp7903p50jr-datasheet.pdf) (11 pp, sha256 `d1763cb71baebbea`, 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/ssp7903p50jr-datasheet.pdf)

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