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Generated by board-derived · KiCad file format 20241209

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AP3441SHE-7B

Diodes Incorporated · Voltage Regulators - DC DC Switching Regulators · DFN2020-8-EP

AP3441SHE-7B from Diodes Incorporated, in a DFN2020-8-EP. Symbol and footprint are the ones used on Adom board designs (KiCad official libraries); the 3D model is Adom-generated from Diodes' U-DFN2020-8 (Type E) drawing with the KiCad 3D model generator. Pin functions are extracted from the manufacturer datasheet with page references.

Pinout

Pin	Name	Type	Function
1	FB	input	Feedback voltage to internal error amplifier, the threshold voltage is 0.6V. [datasheet p.2]
2	PG	open_collector	Power good indicator, open drain output. PG is pulled up to VIN when the output voltage is within 20% of the regulation level, otherwise it is low. [datasheet p.2]
3	VIN	power_in	Bias supply. Chip main power supply pin [datasheet p.2]; input voltage 2.7 V to 5.5 V. [datasheet p.1]
4	PGND	power_in	Power ground pin. [datasheet p.2]
5	NC	no_connect	No connection. [datasheet p.2]
6	LX	power_out	The drains of the internal main and synchronous power MOSFET. [datasheet p.2]
7	EN	input	Enable control input. Force this pin voltage above 1.5V enables the chip, and below 0.4V shuts down the device. [datasheet p.2]
8	SGND	power_in	Signal ground pin. [datasheet p.2]
9	EP	passive	Exposed Pad: exposed metal pad on the underside of the package without any electrical connection to internal circuit; connect it to the PC board ground plane to improve heat dissipation. [datasheet p.2]

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	DFN2020-8-EP
Category	Power Management (PMIC)
Pins	9
LCSC	C2070918
Ordering code	AP3441SHE-7B (U-DFN2020-8 Type E, tape and reel, marking 9B)
Mouser	621-AP3441SHE-7B
DigiKey	AP3441SHE-7BDITR-ND
Distributor summary (LCSC listing, not datasheet)	-40℃~~+85℃@(TA) 1 1MHz 2.7V~~5.5V 3A 55uA 600mV~5.5V Adjustable Buck Buck Built-in Yes DFN2020-8-EP DC-DC Converters ROHS

CAD

Symbol: ap3441she-7b (source library CM5IO:AP3441SHE-7B)
Footprint: Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP1.05x1.75mm
3D model path in footprint: ${KIPRJMOD}/ap3441she-7b.step (Adom-generated with the KiCad 3D model generator from Diodes' U-DFN2020-8 (Type E) table, DS39754 Rev. 3-2 p.12; CC-BY-SA-4.0; source, parameters and checks in provenance/3d-model.json)
3D files: ap3441she-7b-etched.step / ap3441she-7b-etched.glb carry the MPN etch as a separate Adom.LaserEtch part; ap3441she-7b.step / ap3441she-7b.glb are the bare model.
EAGLE/Fusion library: ap3441she-7b.lbr (adom-lbr)

Provenance

Datasheet: Diodes Incorporated AP3441/L datasheet (DS39754 Rev. 3 - 2, September 2019, sha256 c159ff2133de34dd, retrieved 2026-10-27, tier: mfr)
CAD: Footprint and symbol: KiCad official libraries (CC-BY-SA 4.0) as used on Adom boards. 3D model: Adom-generated with the KiCad 3D model generator from Diodes' U-DFN2020-8 (Type E) table (AP3441/L DS39754 Rev. 3-2, p.12), CC-BY-SA-4.0; see provenance/3d-model.json.
Pins: KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7).

Datasheet PDF