# LW3150A23E

**Lewa Micro** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

LW3150A23E 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 pin; use the recommended value or a larger ceramic capacitor from IN to ground, placed as close to the device as possible, with an operating supply range of 1.8V to 7.0V. |
| 2 | GND | power_in | Ground pin; the separate VIN and VOUT ground planes should connect only at this pin. |
| 3 | EN | input | Enable pin; drive EN above VEN(HI) (1.5V typ. in the electrical characteristics table) to turn the regulator on and below VEN(LO) (0.5V) to enter shutdown, with EN pin voltage rated 0 to 7.0V. |
| 4 | NC | unconnected | No internal connection; the datasheet says to ground this pin for better thermal performance. |
| 5 | VOUT | power_out | Regulated output pin; connect a low-ESR ceramic capacitor of at least 1μF from OUT to GND, with an internal pulldown that discharges OUT when VEN is below VEN(LOW), and output range 1.2V to 5.0V. |

## 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 | 1.8 |  | 7 | V |  | 5 |
| Output Accuracy | VOUT | -1 |  | 1 | % | IOUT= 1mA | 5 |
| Line Regulation | ΔVOUT/(ΔVIN*VOUT(NOM)) |  | 0.05 | 0.15 | %/V | VIN= VOUT +1.0V to 7.0V, IOUT=1mA | 5 |
| Load Regulation | ΔVOUT |  | 30 | 60 | mV | 1mA≤IOUT≤500mA | 5 |
| Current Limit | ILIM |  | 520 | 700 | mA | Note 1 (guaranteed by design) | 5 |
| Quiescent Current | IQ |  | 40 | 60 | μA | VIN= VEN= VOUT +1V, No Load | 5 |
| Shutdown Current | ISHD |  | 0.1 |  | μA | VIN=7.0V, VEN=0V | 5 |
| Dropout Voltage | VDROP |  | 85 |  | mV | IOUT=100mA, VOUT=5.0V (Note 1, 2) | 5 |
| Dropout Voltage | VDROP |  | 255 |  | mV | IOUT=300mA, VOUT=5.0V (Note 1, 2) | 5 |
| Dropout Voltage | VDROP |  | 450 |  | mV | IOUT=500mA, VOUT=5.0V (Note 1, 2) | 5 |
| Short Current | ISHORT |  | 100 |  | mA | VOUT=0V (Note 1) | 5 |
| EN High Voltage | VENH | 1.5 |  |  | V | VIN=1.8V to 7.0V, IOUT=1mA | 5 |
| EN Low Voltage | VENL |  |  | 0.5 | V |  | 5 |
| Startup Time | TSTR |  | 60 |  | μs | From VEN L→H to 95%*VOUT, COUT=1μF, No Load | 5 |
| Power Supply Rejection Ratio | PSRR |  | 77 |  | dB | VIN= 4.3V, VOUT=3.3V, VPP=0.5V, IOUT=10mA, f=217Hz | 5 |
| Power Supply Rejection Ratio | PSRR |  | 80 |  | dB | VIN= 4.3V, VOUT=3.3V, VPP=0.5V, IOUT=10mA, f=1kHz | 5 |
| Power Supply Rejection Ratio | PSRR |  | 67 |  | dB | VIN= 4.3V, VOUT=3.3V, VPP=0.5V, IOUT=10mA, f=10kHz | 5 |
| Output Voltage Noise | en |  | 92 |  | μVRMS | VIN= 4.3V, VOUT=3.3V, f=10Hz to 100kHz, IOUT=0mA | 5 |
| Output Voltage Noise | en |  | 102 |  | μVRMS | VIN= 4.3V, VOUT=3.3V, f=10Hz to 100kHz, IOUT=10mA | 5 |
| Thermal Shutdown Temperature | TSD |  | 155 |  | ℃ | Temperature rising | 5 |
| TSD Hysteresis | △TSD |  | 20 |  | ℃ | Temperature falling | 5 |
| Output Discharge Resistance | RDSCHG |  | 65 |  | Ω | VIN= 7.0V, VEN=0V | 5 |
| VIN Supply Voltage (recommended) | VIN | 1.8 |  | 7 | V |  | 4 |
| EN Pin Voltage (recommended) | VEN | 0 |  | 7 | V |  | 4 |
| VOUT Pin Voltage (recommended) | VOUT | 1.2 |  | 5 | V |  | 4 |
| Output Current (recommended) | IOUT | 0 |  | 500 | mA |  | 4 |
| Junction Temperature Range (recommended) | TJ | -40 |  | 125 | ℃ |  | 4 |
| VIN Supply Voltage (absolute maximum) | VIN | -0.3 |  | 8 | V |  | 4 |
| EN Pin Voltage (absolute maximum) | VEN | -0.3 |  | 8 | V |  | 4 |
| VOUT Pin Voltage (absolute maximum) | VOUT | -0.3 |  |  | V | Upper limit printed as (VIN+0.3) | 4 |
| ESD Susceptibility, HBM | V(ESD) | -2000 |  | 2000 | V | per ANSI/ESDA/JEDEC JS-001 | 4 |
| Junction-to-ambient Thermal Resistance, SOT23-5L | RθJA |  | 390 |  | ℃/W | Device mounted on FR-4 PCB per JESD51-3 | 4 |
| Junction Temperature Range (absolute maximum) | TJ | -40 |  | 150 | ℃ |  | 4 |
| Storage Temperature Range | TSTG | -40 |  | 150 | ℃ |  | 4 |
| Lead Temperature (Soldering) | TSOLDER |  |  | 260 | ℃ | 10s | 4 |

## CAD (KiCad official)

- Symbol: `LW3150A23E`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `lw3150a23e-etched.step` / `lw3150a23e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lw3150a23e.step` / `lw3150a23e.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/8758012078391209984) (25 pp, sha256 `56df88266c01136c`, retrieved 2026-10-19, 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/lw3150a23e-datasheet.pdf)