component
LM2674M-5.0
Public Made by Adomby adom
UMW DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2674M-5.0
UMW · DC-DC Converters · SOP-8
LM2674M-5.0 from UMW, in a SOP-8. 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 | CB | passive | Boost capacitance terminal, connected to the boost capacitor (application circuit shows CB: 103/50V). |
| 2 | NC | unconnected | Empty port, no internal connection. |
| 3 | NC | unconnected | Empty port, no internal connection. |
| 4 | FB | input | Feedback control terminal; the FB voltage is limited to -0.3 V to VIN, and the reference is 1.21 V on the ADJ version. |
| 5 | ON/OFF | input | Enable terminal: high = ON, low = OFF; the enable terminal voltage is limited to -0.3 V to 6 V, and the enable threshold has hysteresis with TTL shutdown capability. |
| 6 | GND | power_in | Power supply ground terminal. |
| 7 | VIN | power_in | Positive terminal of the power supply; input voltage range is 7 V to 40 V, with an absolute maximum of 45 V. |
| 8 | VSW | output | Power switch output terminal (SW); the switch output voltage is limited to -1 V to VIN, and the internal power switch supports up to 500 mA output current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 4.9 | 5 | 5.1 | V | VIN=7V to 40V, IOUT=20MA to 500MA | 6 |
| Switching frequency | fosc | 225 | 260 | 275 | kHz | 6 | |
| Input voltage | VIN | 7 | 40 | V | 6 | ||
| Input terminal voltage | VIN | 45 | V | 4 | |||
| FB feedback terminal voltage | VFB | -0.3 | V | Upper limit printed as VIN | 4 | ||
| Switch output terminal voltage | VVSW | -1 | V | Upper limit printed as VIN | 4 | ||
| Enable terminal voltage | VON-OFF | -0.3 | 6 | V | 4 | ||
| Thermal resistance, junction to ambient | RJA | 30 | °C/W | SOP8 package, in air without external heat sink | 4 | ||
| Operating temperature range | TJ | -40 | 125 | °C | 4 | ||
| Storage temperature range | TC | -40 | 150 | °C | 4 | ||
| Welding temperature | TH | 260 | °C | 10s | 4 |
CAD (KiCad official)
- Symbol:
LM2674M-5.0 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lm2674m-5-0-etched.step/lm2674m-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2674m-5-0.step/lm2674m-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (14 pp, sha256
8da892f0ae83409e, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).
# LM2674M-5.0
**UMW** · DC-DC Converters · SOP-8
LM2674M-5.0 from UMW, in a SOP-8. 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 | CB | passive | Boost capacitance terminal, connected to the boost capacitor (application circuit shows CB: 103/50V). |
| 2 | NC | unconnected | Empty port, no internal connection. |
| 3 | NC | unconnected | Empty port, no internal connection. |
| 4 | FB | input | Feedback control terminal; the FB voltage is limited to -0.3 V to VIN, and the reference is 1.21 V on the ADJ version. |
| 5 | ON/OFF | input | Enable terminal: high = ON, low = OFF; the enable terminal voltage is limited to -0.3 V to 6 V, and the enable threshold has hysteresis with TTL shutdown capability. |
| 6 | GND | power_in | Power supply ground terminal. |
| 7 | VIN | power_in | Positive terminal of the power supply; input voltage range is 7 V to 40 V, with an absolute maximum of 45 V. |
| 8 | VSW | output | Power switch output terminal (SW); the switch output voltage is limited to -1 V to VIN, and the internal power switch supports up to 500 mA output current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 4.9 | 5 | 5.1 | V | VIN=7V to 40V, IOUT=20MA to 500MA | 6 |
| Switching frequency | fosc | 225 | 260 | 275 | kHz | | 6 |
| Input voltage | VIN | 7 | | 40 | V | | 6 |
| Input terminal voltage | VIN | | | 45 | V | | 4 |
| FB feedback terminal voltage | VFB | -0.3 | | | V | Upper limit printed as VIN | 4 |
| Switch output terminal voltage | VVSW | -1 | | | V | Upper limit printed as VIN | 4 |
| Enable terminal voltage | VON-OFF | -0.3 | | 6 | V | | 4 |
| Thermal resistance, junction to ambient | RJA | | | 30 | °C/W | SOP8 package, in air without external heat sink | 4 |
| Operating temperature range | TJ | -40 | | 125 | °C | | 4 |
| Storage temperature range | TC | -40 | | 150 | °C | | 4 |
| Welding temperature | TH | | | 260 | °C | 10s | 4 |
## CAD (KiCad official)
- Symbol: `LM2674M-5.0`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2674m-5-0-etched.step` / `lm2674m-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2674m-5-0.step` / `lm2674m-5-0.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757270644339810304) (14 pp, sha256 `8da892f0ae83409e`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/lm2674m-5-0-datasheet.pdf)