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L4941BDT-TR

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by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DPAK. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)l4941bdt-trfactory-2.0.0extractor-text
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Contents

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L4941BDT-TR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK

L4941BDT-TR from STMicroelectronics, in a DPAK. 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 OUTPUT power_out Regulated 5 V output; 4.8 V min / 5.2 V max at IO = 5 mA to 1 A, VI = 6-14 V; dropout voltage 450 mV typ / 700 mV max at 1 A.
2 GND power_in Ground reference; electrically common with the exposed thermal tab (RthJC = 8 °C/W for DPAK).
3 INPUT power_in Unregulated positive supply input; VI max 30 V forward, -15 V reverse (with RO = 100 Ω); operating range 6-16 V per electrical characteristics table.
TAB GND power_in Exposed thermal tab, internally connected to GND (pin 2); provides primary thermal path, RthJC = 8 °C/W for DPAK.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package DPAK
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
Forward input voltage VI 30 V 5
Reverse input voltage VIR -15 V RO=100Ω 5
Storage temperature range Tstg -40 150 °C 5
Operating junction temperature range Top -40 150 °C 5
Output voltage VO 4.8 5 5.2 V IO = 5mA to 1A, VI = 6 to 14V 7
Line regulation ∆VO 5 20 mV VI = 6 to 16V, IO = 5 mA 7
Load regulation ∆VO 8 20 mV IO = 5mA to 1A 7
Load regulation ∆VO 5 15 mV IO = 0.5A to 1A 7
Quiescent current Iq 4 8 mA IO = 5 mA, VI = 6V 7
Quiescent current Iq 20 40 mA IO = 1A, VI = 6V 7
Dropout voltage Vd 250 450 mV IO = 0.5A 7
Dropout voltage Vd 450 700 mV IO = 1A 7
Supply voltage rejection SVR 58 68 dB f = 120Hz, IO = 1A 7
Short circuit current Isc 1.6 2 A VI = 14V 7
Short circuit current Isc 1.8 2.2 A VI = 6V 7
Quiescent current change ∆Iq 3 mA IO = 5 mA, VI = 6 to 14V 7
Quiescent current change ∆Iq -10 mA IO = 1A, VI = 6 to 14V 7
Output voltage drift ∆VO/∆T 0.6 mV/°C 7
Output impedance ZO 30 mΩ f = 1KHz, IO = 0.5A 7
Output noise voltage eN 30 µV/VO B = 100Hz to 100KHz 7
Input voltage VI 16 V IO = 5 mA 7
Thermal resistance junction-case (DPAK column) RthJC 8 °C/W 5
Thermal resistance junction-ambient (DPAK column) RthJA 100 °C/W 5

CAD (KiCad official)

  • Symbol: L4941BDT-TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: DPAK (KiCad packages3D, STEP)
  • 3D model files: l4941bdt-tr-etched.step / l4941bdt-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l4941bdt-tr.step / l4941bdt-tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (17 pp, sha256 a9f11781152d98eb, retrieved 2026-10-21, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF