component
LW5418A23E
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Lewa Micro Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LW5418A23E
Lewa Micro · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
LW5418A23E from Lewa Micro, in a SOT-23-5L. 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 | VIN | power_in | Input supply pin, operating from 1.9V to 5.5V; use the recommended ceramic input capacitor (at least 1µF) placed as close to the pin as possible. |
| 2 | GND | power_in | Ground pin. |
| 3 | EN | input | Enable pin: drive above VEN(HI) (1.5V) to turn the regulator on and below VEN(LO) (0.5V) to put the LDO into shutdown; EN pin voltage is rated 0 to 5.5V. |
| 4 | NC | unconnected | No internal connection; ground this pin for better thermal performance. |
| 5 | VOUT | power_out | Regulated output pin; connect a low-ESR ceramic capacitor (at least 1µF, located within 0.5 inch of the pin) and an internal pulldown discharges OUT in shutdown. Output for this part is 1.8V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Lewa Micro |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 1.9 | 5.5 | V | 5 | ||
| Output Accuracy | VOUT | -1 | 1 | % | IOUT= 1mA | 5 | |
| Current Limit | ILIM | 550 | 700 | mA | 5 | ||
| Quiescent Current | IQ | 10 | 15 | μA | VIN= VEN=VOUT+1V, No Load | 5 | |
| Line Regulation | ΔVOUT/(ΔVIN*VOUT(NOM)) | 0.05 | 0.25 | %/V | VIN= VOUT +1V to 5.5V, IOUT=1mA | 5 | |
| Load Regulation | ΔVOUT | 20 | 60 | mV | 1mA≤IOUT≤500mA | 5 | |
| Input Supply Voltage (absolute maximum) | VIN | -0.3 | 6.5 | V | 4 | ||
| EN Pin Voltage (absolute maximum) | VEN | -0.3 | 6.5 | V | 4 | ||
| VOUT Pin Voltage (absolute maximum) | VOUT | -0.3 | 6 | V | 4 | ||
| ESD Susceptibility, HBM | V(ESD) | -4000 | 4000 | V | HBM, per ANSI/ESDA/JEDEC JS-001 | 4 | |
| Junction Temperature Range (absolute maximum) | TJ | -40 | 150 | ℃ | 4 | ||
| Storage Temperature Range | TSTG | -40 | 150 | ℃ | 4 | ||
| Lead Temperature (Soldering) | TSOLDER | 260 | ℃ | 10s | 4 | ||
| VIN Supply Voltage (recommended) | VIN | 1.9 | 5.5 | V | 4 | ||
| EN Pin Voltage (recommended) | VEN | 0 | 5.5 | V | 4 | ||
| VOUT Pin Voltage (recommended) | VOUT | 1.2 | 5 | V | 4 | ||
| Output Current | IOUT | 0 | 500 | mA | 4 | ||
| Junction Temperature Range (recommended) | TJ | -40 | 125 | ℃ | 4 | ||
| Short Current | ISHORT | 50 | mA | VOUT=0V | 5 | ||
| Shutdown Current | ISHD | 0.1 | μA | VEN=0V | 5 | ||
| EN Pull-Down Current | IEN | 0.15 | μA | VIN=VEN =5.5V | 5 | ||
| EN High Voltage | VENH | 1.5 | V | VIN=1.9V to 5.5V, IOUT=1mA | 5 | ||
| EN Low Voltage | VENL | 0.5 | V | 5 | |||
| Output Discharge Resistance | RDSCHG | 60 | Ω | VIN=5.5V, VEN=0V | 5 | ||
| Thermal Shutdown Temperature | TSD | 160 | ℃ | Temperature rising | 5 | ||
| TSD Hysteresis | △TSD | 20 | ℃ | Temperature falling | 5 | ||
| Junction-to-ambient Thermal Resistance (SOT23-5L) | RθJA | 188 | ℃/W | SOT23-5L, device mounted on FR-4 PCB per JESD51-3 | 4 |
CAD (KiCad official)
- Symbol:
LW5418A23E - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
lw5418a23e-etched.step/lw5418a23e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lw5418a23e.step/lw5418a23e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Lewa Micro datasheet (23 pp, sha256
df31c2e49d16aac8, 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).
# LW5418A23E
**Lewa Micro** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
LW5418A23E from Lewa Micro, in a SOT-23-5L. 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 | VIN | power_in | Input supply pin, operating from 1.9V to 5.5V; use the recommended ceramic input capacitor (at least 1µF) placed as close to the pin as possible. |
| 2 | GND | power_in | Ground pin. |
| 3 | EN | input | Enable pin: drive above VEN(HI) (1.5V) to turn the regulator on and below VEN(LO) (0.5V) to put the LDO into shutdown; EN pin voltage is rated 0 to 5.5V. |
| 4 | NC | unconnected | No internal connection; ground this pin for better thermal performance. |
| 5 | VOUT | power_out | Regulated output pin; connect a low-ESR ceramic capacitor (at least 1µF, located within 0.5 inch of the pin) and an internal pulldown discharges OUT in shutdown. Output for this part is 1.8V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Lewa Micro |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 1.9 | | 5.5 | V | | 5 |
| Output Accuracy | VOUT | -1 | | 1 | % | IOUT= 1mA | 5 |
| Current Limit | ILIM | 550 | 700 | | mA | | 5 |
| Quiescent Current | IQ | | 10 | 15 | μA | VIN= VEN=VOUT+1V, No Load | 5 |
| Line Regulation | ΔVOUT/(ΔVIN*VOUT(NOM)) | | 0.05 | 0.25 | %/V | VIN= VOUT +1V to 5.5V, IOUT=1mA | 5 |
| Load Regulation | ΔVOUT | | 20 | 60 | mV | 1mA≤IOUT≤500mA | 5 |
| Input Supply Voltage (absolute maximum) | VIN | -0.3 | | 6.5 | V | | 4 |
| EN Pin Voltage (absolute maximum) | VEN | -0.3 | | 6.5 | V | | 4 |
| VOUT Pin Voltage (absolute maximum) | VOUT | -0.3 | | 6 | V | | 4 |
| ESD Susceptibility, HBM | V(ESD) | -4000 | | 4000 | V | HBM, per ANSI/ESDA/JEDEC JS-001 | 4 |
| Junction Temperature Range (absolute maximum) | TJ | -40 | | 150 | ℃ | | 4 |
| Storage Temperature Range | TSTG | -40 | | 150 | ℃ | | 4 |
| Lead Temperature (Soldering) | TSOLDER | | | 260 | ℃ | 10s | 4 |
| VIN Supply Voltage (recommended) | VIN | 1.9 | | 5.5 | V | | 4 |
| EN Pin Voltage (recommended) | VEN | 0 | | 5.5 | V | | 4 |
| VOUT Pin Voltage (recommended) | VOUT | 1.2 | | 5 | V | | 4 |
| Output Current | IOUT | 0 | | 500 | mA | | 4 |
| Junction Temperature Range (recommended) | TJ | -40 | | 125 | ℃ | | 4 |
| Short Current | ISHORT | | 50 | | mA | VOUT=0V | 5 |
| Shutdown Current | ISHD | | 0.1 | | μA | VEN=0V | 5 |
| EN Pull-Down Current | IEN | | 0.15 | | μA | VIN=VEN =5.5V | 5 |
| EN High Voltage | VENH | | 1.5 | | V | VIN=1.9V to 5.5V, IOUT=1mA | 5 |
| EN Low Voltage | VENL | | 0.5 | | V | | 5 |
| Output Discharge Resistance | RDSCHG | | 60 | | Ω | VIN=5.5V, VEN=0V | 5 |
| Thermal Shutdown Temperature | TSD | | 160 | | ℃ | Temperature rising | 5 |
| TSD Hysteresis | △TSD | | 20 | | ℃ | Temperature falling | 5 |
| Junction-to-ambient Thermal Resistance (SOT23-5L) | RθJA | | 188 | | ℃/W | SOT23-5L, device mounted on FR-4 PCB per JESD51-3 | 4 |
## CAD (KiCad official)
- Symbol: `LW5418A23E`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `lw5418a23e-etched.step` / `lw5418a23e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lw5418a23e.step` / `lw5418a23e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Lewa Micro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758027052828106752) (23 pp, sha256 `df31c2e49d16aac8`, 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/lw5418a23e-datasheet.pdf)