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Contents

README

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AP64501SP-13

Diodes Incorporated · DC-DC Converters · SOIC-8-EP

AP64501SP-13 from Diodes Incorporated, in a SOIC-8-EP. 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 BST input High-side gate drive boost input that supplies the drive for the high-side N-channel power MOSFET, with a 100nF capacitor recommended from BST to SW.
2 VIN power_in Power input that supplies the IC and the step-down power MOSFETs; drive with a 3.8V to 40V source and bypass to GND with a suitably large capacitor.
3 EN input Digital enable input that turns the regulator on when high and off when low, with a precision 1.18V threshold for programming UVLO; connect to VIN or leave floating for automatic startup.
4 SS passive Soft-start pin where a ceramic capacitor from this pin to ground programs the soft-start time, with an internal 4μA current source pulling the SS pin up.
5 FB input Feedback sensing terminal for the output voltage, connected to the output resistive divider (0.8V ±1% reference).
6 COMP passive Compensation pin where an external RC network is connected to adjust the loop response.
7 GND power_in Power ground for the device.
8 SW power_out Power switching output node that supplies power to the output; the output LC filter connects from SW to the load.
9 EXPOSED PAD power_in Heat dissipation path of the die that must be electrically connected to GND and to the PCB ground plane for proper operation and thermal performance.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOIC-8-EP
Category Power Management (PMIC)
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
Shutdown Supply Current ISHDN 1 3 μA VEN = 0V 6
VIN Undervoltage Rising Threshold UVLO 3.5 3.7 V 6
HS Peak Current Limit IPEAK_LIMIT 6.8 8 9.2 A Note 8 6
Oscillator Frequency fSW 510 570 630 kHz 6
Feedback Voltage VFB 792 800 808 mV CCM 6
EN Logic High Threshold VEN_H 1.18 1.25 V 6
EN Logic Low Threshold VEN_L 1.03 1.09 V 6
EN Input Current IEN 1 1.5 2 μA VEN = 1V 6
Supply Voltage VIN 3.8 40 V 5
Output Voltage VOUT 0.8 39 V 5
Operating Ambient Temperature Range TA -40 85 °C 5
Operating Junction Temperature Range TJ -40 125 °C 5
VIN Supply Pin Voltage VIN -0.3 42 V DC 5
VIN Supply Pin Voltage VIN -0.3 45 V 400ms 5
Enable/UVLO Pin Voltage VEN -0.3 42 V 5
Soft-Start Pin Voltage VSS -0.3 6 V 5
Feedback Pin Voltage VFB -0.3 6 V 5
Compensation Pin Voltage VCOMP -0.3 6 V 5
Storage Temperature TST -65 150 °C 5
Junction Temperature TJ 160 °C 5
Lead Temperature TL 260 °C 5
ESD Human Body Model HBM 2000 V HBM 5
ESD Charged Device Model CDM 500 V CDM 5
Junction to Ambient Thermal Resistance θJA 45 °C/W SO-8EP, Note 6 5
Junction to Case Thermal Resistance θJC 5 °C/W SO-8EP 5

CAD (KiCad official)

  • Symbol: AP64501SP-13
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: SOIC-8-EP (KiCad packages3D, STEP)
  • 3D model files: ap64501sp-13-etched.step / ap64501sp-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap64501sp-13.step / ap64501sp-13.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (26 pp, sha256 a309e45521358952, retrieved 2026-10-09, tier: lcsc)
  • 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