component
WL2810D33-4
Public Made by Adomby adom
WILLSEMI(Will Semicon) Linear Voltage Regulators (LDO), XDFN-4-EP(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownWL2810D33-4
WILLSEMI(Will Semicon) · Linear Voltage Regulators (LDO) · XDFN-4-EP(1x1)
WL2810D33-4 from WILLSEMI(Will Semicon), in a XDFN-4-EP(1x1). 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 | VOUT | power_out | Regulated output of the LDO; the datasheet gives an output range of 1.0 V to 3.3 V and a 300 mA output current rating. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | EN | input | Active-high enable; EN logic high voltage (VENH) is 1.2 V minimum and logic low voltage (VENL) is 0.4 V maximum at VIN=5.5 V, and the shutdown current is 1.0 µA maximum with VEN=0 V. |
| 4 | VIN | power_in | Regulator input supply; the operating supply voltage is 2.2 V to 5.5 V, with an absolute maximum VIN range of -0.3 V to 6.5 V. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI(Will Semicon) |
| Package | XDFN-4-EP(1x1) |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage (VOUT>1.5V row, 3.3V variant) | VOUT | 0.98 | 1.02 | V | VOUT>1.5V, IOUT=1mA | 4 | |
| Dropout voltage | VDROP | 220 | 330 | mV | VOUT=3.3V, IOUT=300mA | 4 | |
| Line regulation | ΔVLINE | 0.01 | 0.1 | %/V | VIN=2.7~5.5V, IOUT=1mA | 4 | |
| Load regulation | ΔVLoad | 10 | 30 | mV | VOUT=2.8V , IOUT=1~300mA | 4 | |
| Quiescent current | IQ | 42 | 70 | μA | VOUT=2.8V, IOUT=0 | 4 | |
| Shut-down current | ISHDN | 1 | μA | VEN=0V | 4 | ||
| EN logic high voltage | VENH | 1.2 | V | VIN=5.5V, IOUT=1mA | 4 | ||
| EN logic low voltage | VENL | 0.4 | V | VIN=5.5V, VOUT=0V | 4 | ||
| EN input current | IEN | 1 | μA | VEN= 0 to 5.5V | 4 | ||
| Power supply rejection rate | PSRR | 70 | dB | VIN=(VOUT+1V)DC+0.5VP-P F=217Hz ,Iout=10mA | 4 | ||
| Power supply rejection rate | PSRR | 60 | dB | VIN=(VOUT+1V)DC+0.5VP-P F=10KHz, Iout=10mA | 4 | ||
| Current limit | ILIM | 300 | mA | VEN=VIN | 4 | ||
| Short current | ISHORT | 80 | mA | VEN=VIN, VOUT Short to GND with 1Ω | 4 | ||
| Output noise voltage | eNO | 55 | μVRMS | 10Hz to 100KHz, COUT=1μF | 4 | ||
| Thermal shutdown threshold | TSD | 165 | °C | 4 | |||
| Thermal shutdown hysteresis | ΔTSD | 30 | °C | 4 | |||
| Power dissipation | 400 | mW | TA=25℃ | 3 | |||
| VIN range | -0.3 | 6.5 | V | 3 | |||
| VEN range | -0.3 | V | 3 | ||||
| VOUT range | -0.3 | V | 3 | ||||
| Output current | IOUT | 400 | mA | 3 | |||
| Lead temperature range | 260 | °C | 3 | ||||
| Storage temperature range | -55 | 150 | °C | 3 | |||
| Operating junction temperature range | 150 | °C | 3 | ||||
| ESD HBM | 8000 | V | 3 | ||||
| ESD MM | 400 | V | 3 | ||||
| Operating supply voltage | 2.2 | 5.5 | V | 3 | |||
| Operating temperature range | -40 | 85 | °C | 3 | |||
| Thermal resistance, junction-to-ambient (DFN1x1-4L) | RθJA | 250 | °C/W | DFN1x1-4L package | 3 |
CAD (KiCad official)
- Symbol:
WL2810D33-4 - Footprint:
Package_DFN_QFN:OnSemi_XDFN4-1EP_1.0x1.0mm_EP0.52x0.52mm - 3D model: XDFN-4-EP(1x1) (KiCad packages3D, STEP)
- 3D model files:
wl2810d33-4-etched.step/wl2810d33-4-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);wl2810d33-4.step/wl2810d33-4.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WILLSEMI(Will Semicon) datasheet (12 pp, sha256
e0fad9e03b483a34, retrieved 2026-10-29, 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).