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LP3984-33B5F

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LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LP3984-33B5F

LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

LP3984-33B5F from LOWPOWER, in a SOT-23-5. 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 Power input voltage; the datasheet's recommended supply input range is 2.5V to 5.5V and the absolute maximum supply input is 6.5V.
2 GND power_in Ground reference pin for the LDO.
3 EN input Active-high chip enable: the regulator turns on when EN is above 1.4V and enters shutdown when EN falls below 0.4V, and it may be tied to VIN for continuous operation.
4 NC unconnected No internal connection; leave unconnected.
5 VOUT power_out Regulated output voltage, rated up to 300mA, which requires a ceramic output capacitor of at least 1µF with ESR above 25mΩ for stability.

Key specifications

Parameter Value
Manufacturer LOWPOWER
Package SOT-23-5
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
Output Voltage Accuracy ΔVOUT -2 2 % IOUT=1mA 4
Quiescent Current IQ 50 130 μA VEN≥1.2V, IOUT=0mA 4
Dropout Voltage VDROP 200 240 mV IOUT=200mA, VOUT>2.8V 4
Dropout Voltage VDROP 300 360 mV IOUT=300mA, VOUT>2.8V 4
Output Loading Current ILOAD 300 mA VEN=VIN, VIN>2.8V 4
Current Limit ILIM 500 mA RLOAD=1Ω 4
Line Regulation ΔVLINE 0.2 %/V VIN=(VOUT+1V) to 5.5V, IOUT=50mA 4
Load Regulation ΔLOAD 2 %/A 1mA<IOUT<300mA 4
Standby Current ISTBY 1 μA VEN=GND, Shutdown 4
EN Input Bias Current IBSD 1 μA VEN=3V 4
EN Logic-Low Voltage VIL 0.4 V VIN=3V to 5.5V, Shutdown 4
EN Logic-High Voltage VIH 1.4 V VIN=3V to 5.5V, Start-Up 4
Output Noise Voltage 300 uVRMS 10Hz to 100kHz, IOUT=200mA, COUT=1µF 4
Power Supply Rejection Rate PSRR -68 dB COUT=1µF, f = 1kHz, IOUT=100mA 4
Power Supply Rejection Rate PSRR -60 dB COUT=1µF, f = 10kHz, IOUT=100mA 4
Thermal Shutdown Temperature TSD 150 ℃ 4
Supply Input Voltage 6.5 V 3
Other Pin Voltage -0.3 V Maximum printed as VIN+0.3V 3
Power Dissipation PD 500 mW TA = 25℃, SOT23-5 3
ESD HBM 2 kV Human Body Model 3
ESD MM 200 V Machine Model 3
Maximum Junction Temperature 150 ℃ 3
Maximum Soldering Temperature 260 ℃ At leads, 10 sec 3
Storage Temperature Range -65 150 ℃ 3
Supply Input Voltage (recommended) 2.5 5.5 V 3
EN Input Voltage 0 V Maximum printed as VIN+0.3V 3
Operation Junction Temperature Range -40 125 ℃ 3
Operation Ambient Temperature Range -40 85 ℃ 3
Thermal Resistance Junction-to-Ambient (SOT23-5) JA 195 ℃/W 3
Thermal Resistance Junction-to-Case (SOT23-5) JC 60 ℃/W 3

CAD (KiCad official)

  • Symbol: LP3984-33B5F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lp3984-33b5f-etched.step / lp3984-33b5f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3984-33b5f.step / lp3984-33b5f.glb are the bare package body.

Provenance

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

  • Datasheet: LOWPOWER datasheet (6 pp, sha256 a1514bb510946b2a, 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