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SL9400L28SE

Public Made by Adom

by adom

Slkor SLKORMICRO Elec 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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SL9400L28SE

Slkor SLKORMICRO Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

SL9400L28SE from Slkor SLKORMICRO Elec, 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 gives an input range of 1.5V to 8V, with an absolute maximum of -0.3V to +9V.
2 GND power_in Ground reference pin for the regulator.
3 EN input Chip enable, active high; the datasheet notes this pin is high impedance.
4 NC unconnected Not connected (the datasheet prints this as 'NO Connected').
5 VOUT power_out Regulated output voltage; the output stage supplies up to 400mA at VOUT=3.3V, with current limiting and short-circuit protection.

Key specifications

Parameter Value
Manufacturer Slkor SLKORMICRO Elec
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
Input Voltage VIN 1.5 8 V 6
Output Voltage Accuracy ΔVOUT -2 2 % IOUT=1mA 6
Line Regulation ΔVLINE 0.01 0.15 % VIN=2.7V~5.5V,IOUT=1mA 6
Shut-down Current ISHDN 1 μA VEN=0V 6
EN Input Current IEN 1 µA VEN= 0~ 5.5V 6
EN Input Threshold Logic Low VIL 0.4 V VIN=5.5V, VOUT=0V 6
EN Input Threshold Logic High VIH 1.2 V VIN=5.5V, IOUT=1mA 6
Quiescent Current IQ 0.5 μA VOUT=3.3V, IOUT=0 6
Dropout Voltage VDROP 180 mV VOUT=3.3V, IOUT=100mA 6
Dropout Voltage VDROP 400 mV VOUT=3.3V, IOUT=200mA 6
Load Regulation ΔVLOAD 200 mV 1mA<IOUT<300mA,VOUT=3.3V 6
Current Limit ILIM 400 mA VIN=VEN=4.5V 6
Short Current ISHORT 35 mA VEN=VIN, VOUT Short to GND with 1Ω 6
Power Supply Rejection Rate PSRR 60 dB VIN=5VDC+0.5VP-P f=1KHz, IOUT=10mA 6
Input Voltage (absolute maximum) VIN -0.3 9 V 5
Maximum Load Current 450 mA 5
Power Dissipation SOT-23-5 400 mW Ratings at 25℃ ambient 5
Thermal Resistance, Junction-to-Ambient SOT-23-5 400 °C/W Junction-to-Ambient 5
Operating Ambient Temperature -40 85 °C 5
Junction Temperature -40 125 °C 5
Storage Temperature Range -55 150 °C 5
Lead Temperature 260 °C 10 s 5

CAD (KiCad official)

  • Symbol: SL9400L28SE
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: sl9400l28se-etched.step / sl9400l28se-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sl9400l28se.step / sl9400l28se.glb are the bare package body.

Provenance

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

  • Datasheet: Slkor SLKORMICRO Elec datasheet (12 pp, sha256 c0ddccefdec3cd70, 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