LM2681M6 from Texas Instruments, in a SOT-23-6. 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	V+	power_in	Power supply positive voltage input, which is 2.5V to 5.5V in voltage doubler operation.
2	GND	power_in	Power supply ground input; the internal oscillator uses the OUT and GND pins, which must have more than 1.8V across them.
3	CAP−	passive	Connect this pin to the negative terminal of the charge-pump capacitor.
4	GND	power_in	Power supply ground input, the same function as pin 2.
5	OUT	power_out	Positive voltage output of the doubler, ideally 2V+ at no load; OUT to GND is rated 11.6V absolute maximum.
6	CAP+	passive	Connect this pin to the positive terminal of the charge-pump capacitor.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-6
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
Supply Voltage	V+	2.5		5.5	V		2
Supply Current	IQ		550	1000	µA	No Load	2
Output Current	IL			20	mA		2
Sum of the Rds(on) of the four internal MOSFET switches	RSW		8	16	Ω	IL = 20 mA	2
Output Resistance	ROUT		15	40	Ω	IL = 20 mA	2
Oscillator Frequency	fOSC	80		160	kHz	See(3)	2
Switching Frequency	fSW	40		80	kHz	See(3)	2
Power Efficiency	PEFF	86		93	%	RL (1.0k) between GND and OUT	2
Power Efficiency	PEFF			90	%	IL = 20 mA to GND	2
Voltage Conversion Efficiency	VOEFF	99		99.96	%	No Load	2
Supply Voltage (V+ to GND)	V+			5.8	V	V+ to GND voltage	2
OUT to GND Voltage	OUT			11.6	V	OUT to GND voltage	2
OUT to V+ Voltage	OUT			5.8	V	OUT to V+ voltage	2
V+ and OUT Continuous Output Current				30	mA		2
Output Short-Circuit Duration to GND				1	sec.	OUT to GND, per footnote 3	2
Continuous Power Dissipation				600	mW	TA = 25°C	2
Maximum Junction Temperature	TJMax			150	°C		2
Junction-to-Ambient Thermal Resistance	θJA		210		°C/W		2
Operating Junction Temperature Range	TJ	-40		85	°C		2
Storage Temperature Range		-65		150	°C		2
Lead Temperature (Soldering, 10 seconds)				300	°C	10 seconds	2
ESD Rating				2	kV		2

CAD (KiCad official)

Symbol: LM2681M6
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)
3D model files: lm2681m6-etched.step / lm2681m6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2681m6.step / lm2681m6.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (18 pp, sha256 51aef91b6b6c2c74, retrieved 2026-11-05, 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

LM2681M6

Verified LM2681M6

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README