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LM2931CDR2G
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onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+59@@ -0,0 +1,59 @@+# LM2931CDR2G++**onsemi** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8++LM2931CDR2G from onsemi, in a SOIC-8. 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 | Output | power_out | Regulated output. Adjustable from 3.0 V to 24 V, capable of supplying >100 mA with typical dropout of 0.16 V at 100 mA. Requires >=100 uF output capacitor (C_O(ESR) ~0.3 ohm) for stability. |+| 2 | GND | power_in | Ground / device return. Tied together with pins 3, 6, 7 for the SOIC-8 package (also serves as heat-spreader). |+| 3 | GND | power_in | Ground / device return. Tied together with pins 2, 6, 7 for the SOIC-8 package (also serves as heat-spreader). |+| 4 | Adjust | input | Feedback / adjust pin. The reference voltage (Vref = 1.20 V typ) is developed between Output and Adjust across R1. Adjust-pin current is typically 0.2 uA. Set output with Vout = Vref * (1 + R2/R1) + I_Adj*R2. |+| 5 | Output Inhibit | input | Active-high shutdown input. Output-off threshold >=2.50 V (25 C), output-on threshold <=1.90 V (25 C). Threshold current ~30 uA typ (50 uA max) at V_th(OI)=2.5 V. Useful for microprocessor-based enable/disable. |+| 6 | GND | power_in | Ground / device return. Tied together with pins 2, 3, 7 for the SOIC-8 package (also serves as heat-spreader). |+| 7 | GND | power_in | Ground / device return. Tied together with pins 2, 3, 6 for the SOIC-8 package (also serves as heat-spreader). |+| 8 | Input | power_in | Unregulated supply input. Continuous rating 40 Vdc, transient 60 Vpk (<=100 ms load dump), reverse-polarity transient -50 Vpk. Over-voltage shutdown threshold 29.5 V typ (26 V min). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `LM2931CDR2GLM2931CD`+- `LM2931CDR2G`+- `LM2931CDR2GLM2931ACDR2G`+- `LM2931CDR2GNCV2931CDR2G`+- `LM2931CDR2GNCV2931ACDR2G`+- `LM2931CDR2GLM2931CTH`+- `LM2931CDR2GTH SUFFIX`+- `LM2931CDR2GLM2931CTV`+- `LM2931CDR2GTV SUFFIX`+- `LM2931CDR2GLM2931CT`+- `LM2931CDR2GT SUFFIX (Case 314D)`+- `LM2931CDR2GLM2931CD2T`+- `LM2931CDR2GD2T SUFFIX (Case 936A)`++## CAD (KiCad official)++- Symbol: `LM2931CDR2G`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/lm2931c-d.pdf) (23 pp, sha256 `df9ec9ec42038b2b`, 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/lm2931cdr2g-datasheet.pdf)
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