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Generated by kicad-footprint-generator · KiCad file format 20260206

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l4941bdt-tr-etched.glb	Publish 0.1.0 · Ray	13d ago
l4941bdt-tr-etched.step	l4941bdt-tr: factory component page (tier=lcsc) · Ray	13d ago
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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