component
LM7905S
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# LM7905S++**HGSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-3++LM7905S from HGSEMI, in a TO-263-3. 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. Both input and output voltages are referenced to this pin. |+| 2 | INPUT | power_in | Unregulated negative input supply. For LM7905 operating range is -7.0 V >= VIN >= -20 V (absolute max -35 V). Requires a 2.2 uF input decoupling capacitor to ground. |+| 3 | OUTPUT | power_out | Regulated -5.0 V output (typ.), -4.82 V to -5.18 V over 5 mA to 1.0 A load. Requires >=1.0 uF output capacitor to ground for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | TO-263-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LM7905SS/TR`+- `LM7905ST`+- `LM7905SS2/TR`++## CAD (KiCad official)++- Symbol: `LM7905S`+- Footprint: `Package_TO_SOT_SMD:TO-263-2`+- 3D model: TO-263-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/lm7905s-datasheet.pdf) (10 pp, sha256 `7e5f09b8cf107bcf`, 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/lm7905s-datasheet.pdf)
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