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LMS1587CT-3.3
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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LMS1587CT-3.3
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LMS1587CT-3.3 from Texas Instruments, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference for the fixed 3.3V LMS1587-3.3 (ADJ/GND pin, which is the adjust pin only on the adjustable version), with typical quiescent current of 7.0 mA and 13.0 mA max at VIN = 5V. |
| 2 | OUTPUT | power_out | Regulated 3.3V output (3.235V to 3.365V over 0 to 3A load, 4.75V ≤ VIN ≤ 7V), with current limit of 3.1A min and 4.3A max, which also connects to the metal tab and needs a 10 µF capacitor for stability. |
| 3 | INPUT | power_in | Unregulated supply input requiring at least 4.75V for the 3.3V output (up to 7V in the regulation specs), with dropout of about 1.15V typical at 3A and a 13V absolute maximum input-to-output differential. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-220 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LMS1587CT-3.3 - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
lms1587ct-3-3-etched.step/lms1587ct-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lms1587ct-3-3.step/lms1587ct-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (17 pp, sha256
afbade423e27055f, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# LMS1587CT-3.3
**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LMS1587CT-3.3 from Texas Instruments, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference for the fixed 3.3V LMS1587-3.3 (ADJ/GND pin, which is the adjust pin only on the adjustable version), with typical quiescent current of 7.0 mA and 13.0 mA max at VIN = 5V. |
| 2 | OUTPUT | power_out | Regulated 3.3V output (3.235V to 3.365V over 0 to 3A load, 4.75V ≤ VIN ≤ 7V), with current limit of 3.1A min and 4.3A max, which also connects to the metal tab and needs a 10 µF capacitor for stability. |
| 3 | INPUT | power_in | Unregulated supply input requiring at least 4.75V for the 3.3V output (up to 7V in the regulation specs), with dropout of about 1.15V typical at 3A and a 13V absolute maximum input-to-output differential. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-220 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `LMS1587CT-3.3`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `lms1587ct-3-3-etched.step` / `lms1587ct-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lms1587ct-3-3.step` / `lms1587ct-3-3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lms1587) (17 pp, sha256 `afbade423e27055f`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/lms1587ct-3-3-datasheet.pdf)