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LW5533A23D

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Lewa Micro Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LW5533A23D

Lewa Micro · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L

LW5533A23D from Lewa Micro, in a SOT-23-3L. 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 pin; the datasheet lists it as ground and recommends a large-area GND plane for thermal performance only on the DFN/SOT89/TO-252 thermal-pad packages, not on SOT23-3L.
2 VOUT power_out Regulated output; VOUT pin voltage is rated 1.8 V to 5.0 V in recommended operation, with output current 0 to 150 mA and absolute maximum VOUT pin voltage of -0.3 V to 6.0 V.
3 VIN power_in Power supply input; recommended supply range is 2.5 V to 40 V, with absolute maximum supply voltage of -0.3 V to 44 V.

Key specifications

Parameter Value
Manufacturer Lewa Micro
Package SOT-23-3L
Category Power Management (PMIC)
Pins 3

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 2.5 40 V 4
Output Voltage accuracy VOUT -1 1 % IOUT=1mA 4
Current Limit ILIM 150 250 mA VIN=5.0V, VOUT=3.3V 4
Quiescent Current IQ 1.3 2 μA VIN=VOUT+1V, No Load 4
Shutdown Current ISHD 0.1 1 μA VIN=12V, VEN=0V 4
Dropout Voltage at IOUT=10mA VDROP 70 mV IOUT=10mA, VOUT=3.3V 4
Dropout Voltage at IOUT=50mA VDROP 350 mV IOUT=50mA, VOUT=3.3V 4
Dropout Voltage at IOUT=100mA VDROP 700 mV IOUT=100mA, VOUT=3.3V 4
Dropout Voltage at IOUT=150mA VDROP 1000 mV IOUT=150mA, VOUT=3.3V 4
Line Regulation SLINE 0.02 0.03 %/V VIN=VOUT+1V to 40V, IOUT=1mA 4
Load Regulation SLOAD 25 50 mV 1mA≤IOUT≤100mA 4
Short Current ISHORT 90 mA VOUT=0V 4
EN High Voltage VENH 1.5 V VIN=12V, IOUT =1mA 4
EN Low Voltage VENL 0.4 V 4
EN High Current IENH 0 0.1 μA VIN=12V 4
EN Low Current IENL 0 0.1 μA VIN=12V, VEN=0V 4
PSRR PSRR 72 dB CIN=None, IOUT=10mA, VIN=4.3V, f=217Hz 4
PSRR PSRR 55 dB CIN=None, IOUT=10mA, VIN=4.3V, f=1KHz 4
PSRR PSRR 88 dB CIN=None, IOUT=10mA, VIN=12V, f=217Hz 4
PSRR PSRR 75 dB CIN=None, IOUT=10mA, VIN=12V, f=1KHz 4
Thermal Shut Down Temperature TSD 165 ℃ Temperature rising 4
TSD Hysteresis △TSD 20 ℃ Temperature falling 4
VIN Supply Voltage VIN 2.5 40 V 3
EN Pin Voltage VEN 0 40 V 3
VOUT pin Voltage VOUT 1.8 5 V 3
Output Current IOUT 0 150 mA 3
Junction Temperature Range (operating) TJ -40 125 ℃ 3
Supply Voltage (absolute maximum) VIN -0.3 44 V 3
EN pin to GND Voltage (absolute maximum) VEN -0.3 44 V 3
VOUT pin Voltage (absolute maximum) VOUT -0.3 6 V 3
ESD Susceptibility, Human-body model V(ESD) -2000 2000 V Human-body model, per ANSI/ESDA/JEDEC JS-001 3
Maximum Power Dissipation SOT23-3L PD 0.69 W SOT23-3L, device mounted on FR-4 PCB 3
Junction Temperature Range (absolute maximum) TJ -40 150 ℃ 3
Storage Temperature Range TSTG -40 150 ℃ 3
Lead Temperature (Soldering) TSOLDER 260 ℃ 10s 3
Junction-to-ambient Thermal Resistance SOT23-3L RθJA 180 ℃/W SOT23-3L, device mounted on FR-4 PCB 3

CAD (KiCad official)

  • Symbol: LW5533A23D
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: lw5533a23d-etched.step / lw5533a23d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lw5533a23d.step / lw5533a23d.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Lewa Micro datasheet (15 pp, sha256 64193ad6e786f784, retrieved 2026-10-17, 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