LM2841YMK-ADJL from Texas Instruments, in a TSOT-23-6L. 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	CB	input	SW FET gate bias voltage; connect the CBOOT capacitor between CB and SW.
2	GND	power_in	Ground connection for the device.
3	FB	input	Feedback pin sets VOUT = VFB(1 + R1/R2), and resistors must be from 100 Ω to 10 kΩ to avoid input bias errors.
4	SHDN	input	Logic-level shutdown input that pulls to GND to disable and high to enable the device, and must not be allowed to float.
5	VIN	power_in	Power input voltage pin with a 4.5-V to 42-V normal operating range.
6	SW	output	Power FET output that connects to the inductor, diode, and CBOOT capacitor.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSOT-23-6L
Category	Power Management (PMIC)
Pins	6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Quiescent current	IQ		16		µA	SHDN = 0 V	5
Quiescent current	IQ			40	µA	SHDN = 0 V; TJ = -40°C to 125°C	5
Quiescent current, device ON not switching	IQ		1.3		mA	Device ON, not switching	5
Quiescent current, device ON not switching	IQ			1.75	mA	Device ON, not switching; TJ = -40°C to 125°C	5
Quiescent current, device ON no load	IQ		1.35		mA	Device ON, no load	5
Quiescent current, device ON no load	IQ			1.85	mA	Device ON, no load; TJ = -40°C to 125°C	5
Switch ON resistance	RDSON		0.9		Ω	See (4)	5
Switch ON resistance	RDSON			1.6	Ω	TJ = -40°C to 125°C	5
Switch leakage current	ILSW		0		µA	VIN = 42 V	5
Switch leakage current	ILSW			0.5	µA	VIN = 42 V; TJ = -40°C to 125°C	5
Switch current limit LM2841	ICL	525			mA	LM2841(5)	5
Switch current limit LM2841	ICL			900	mA	LM2841(5); TJ = -40°C to 125°C	5
Feedback pin bias current	IFB		0.1		µA	LM2840,1,2	5
Feedback pin bias current	IFB			1	µA	LM2840,1,2; TJ = -40°C to 125°C	5
FB pin reference voltage	VFB		0.765		V		5
FB pin reference voltage	VFB	0.747		0.782	V	TJ = -40°C to 125°C	5
Minimum ON-time	tON(min)		100		ns	See (7)	5
Minimum ON-time	tON(min)			150	ns	See (7); TJ = -40°C to 125°C	5
Minimum OFF-time Y option	tOFF(min)		104		ns	Y option	5
Minimum OFF-time Y option	tOFF(min)			200	ns	Y option; TJ = -40°C to 125°C	5
Switching frequency Y option	fSW		1.25		MHz	Y option, VFB = 0.5 V	5
Switching frequency Y option	fSW	0.95		1.5	MHz	Y option, VFB = 0.5 V; TJ = -40°C to 125°C	5
Switching frequency Y option	fSW		0.35		MHz	Y option, VFB = 0 V	5
Maximum duty cycle Y option	DMAX		87		%	Y option	5
Maximum duty cycle Y option	DMAX	81			%	Y option; TJ = -40°C to 125°C	5
Undervoltage lockout on threshold	VUVP		3.7		V	On threshold	6
Undervoltage lockout on threshold	VUVP			4.4	V	On threshold; TJ = -40°C to 125°C	6
Undervoltage lockout off threshold	VUVP		3.5		V	Off threshold	6
Undervoltage lockout off threshold	VUVP	3.25			V	Off threshold; TJ = -40°C to 125°C	6
Shutdown threshold device ON	VSHDN		1		V	Device ON	6
Shutdown threshold device ON	VSHDN	2.3			V	Device ON; TJ = -40°C to 125°C	6
Shutdown threshold device OFF	VSHDN		0.9		V	Device OFF	6
Shutdown threshold device OFF	VSHDN			0.3	V	Device OFF; TJ = -40°C to 125°C	6
Shutdown pin input bias current	ISHDN		0.05		µA	VSHDN = 2.3 V	6
Shutdown pin input bias current	ISHDN			1.5	µA	VSHDN = 2.3 V; TJ = -40°C to 125°C	6
Shutdown pin input bias current	ISHDN		0.02		µA	VSHDN = 0 V	6
Input voltage VIN absolute maximum	VIN	-0.3		45	V		4
SHDN voltage absolute maximum	SHDN	-0.3		45	V	(VIN + 0.3 V) < 45 V	4
SW voltage absolute maximum	SW	-0.3		45	V		4
CB voltage above SW voltage absolute maximum	CB			7	V	CB voltage above SW voltage	4
FB voltage absolute maximum	FB	-0.3		5	V		4
Maximum junction temperature	TJ			150	°C		4
Storage temperature	Tstg	-65		150	°C		4
Operating junction temperature	TJ	-40		125	°C		4
Input voltage	VIN	4.5		42	V		4
SW voltage	SW			42	V		4
Junction-to-ambient thermal resistance	RθJA		121		°C/W	DDC (SOT) 6-pin package	4
Junction-to-case (top) thermal resistance	RθJC(top)		94		°C/W	DDC (SOT) 6-pin package	4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts	copper		to the FB pin, and away from the inductor to minimize coupling noise into the feedback pin. The input bypass capacitor CIN must be placed close to the VIN pin. This reduces copper trace resistance, wh	16

CAD (KiCad official)

Symbol: LM2841YMK-ADJL
Footprint: Package_TO_SOT_SMD:TSOT-23-6
3D model: TSOT-23-6L (KiCad packages3D, STEP)
3D model files: lm2841ymk-adjl-etched.step / lm2841ymk-adjl-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2841ymk-adjl.step / lm2841ymk-adjl.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (28 pp, sha256 8a38a14f123a248e, retrieved 2026-11-06, tier: manufacturer)
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

LM2841YMK-ADJL

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3D Model

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