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AP3441LSHE-7B

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Diodes Incorporated DC-DC Converters, DFN-8-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AP3441LSHE-7B

Diodes Incorporated · DC-DC Converters · DFN-8-EP(2x2)

AP3441LSHE-7B from Diodes Incorporated, in a DFN-8-EP(2x2). 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 FB input Feedback input to the internal error amplifier, with a threshold voltage of 0.6V.
2 PG output Open-drain power good indicator that is pulled up to VIN when the output is within 20% of regulation and is otherwise low.
3 VIN power_in Bias and main power supply pin, specified for 2.7V to 5.5V input.
4 PGND power_in Power ground pin for the internal power MOSFETs.
5 NC unconnected No internal connection.
6 LX output Connected to the drains of the internal main and synchronous power MOSFETs, forming the switching node.
7 EN input Enable control input that enables the chip above 1.5V and shuts the device down below 0.4V.
8 SGND power_in Signal ground pin.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package DFN-8-EP(2x2)
Category Power Management ICs
Pins 9

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage Range VIN 2.7 5.5 V 5
Output Voltage Range VOUT 0.6 V 5
Shutdown Current ISD 0.1 1 µA VEN = 0V 5
Input UVLO Threshold VUVLO 2.4 2.5 V VIN Rises 5
Regulated Feedback Voltage VFB 0.591 0.6 0.609 V 5
FB Leakage Current IFB 0.2 µA VFB = 1V 5
Peak Inductor Current ILIM 3.5 A 5
Oscillator Frequency fOSC 0.8 1 1.2 MHz 5
Maximum Duty Cycle DMAX 100 % 5
EN Threshold High VENH 1.5 V 5
EN Threshold Low VENL 0.4 V 5
EN Leakage Current IEN -1 1 µA VIN= VEN =5V 5
Soft-Start Time tSS 0.7 1 1.3 ms 5
Supply Voltage VIN 2.7 5.5 V 4
Junction Temperature Range TJ -40 125 °C 4
Operating Ambient Temperature TA -40 85 °C 4
Input Voltage VIN -0.3 6 V 4
EN Pin Voltage VEN -0.3 V Upper limit VIN+0.3 4
FB Pin Voltage VFB -0.3 V Upper limit VIN+0.3 4
LX Pin Voltage VLX -0.3 V Upper limit VIN+0.3 4
LX Pin Voltage (pulse) VLX -3 V for <20ns; upper limit VIN+3 4
Power Dissipation PD 1.4 W On PCB, TA = +25°C 4
Operating Junction Temperature TJ 150 °C 4
Storage Temperature TSTG -55 150 °C 4
ESD Human Body Model VHBM 2000 V JESD22-A114 4
ESD Charge Device Mode VCDM 1000 V JESD22-C101 4
Thermal Resistance (Junction to Ambient) θJA 70 °C/W 4
Thermal Resistance (Junction to Case) θJC 8.2 °C/W Simulation 4

CAD (KiCad official)

  • Symbol: AP3441LSHE-7B
  • Footprint: Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm
  • 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
  • 3D model files: ap3441lshe-7b-etched.step / ap3441lshe-7b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap3441lshe-7b.step / ap3441lshe-7b.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (13 pp, sha256 c159ff2133de34dd, retrieved 2026-10-28, 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