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L6565D

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STMicroelectronics AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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L6565D

STMicroelectronics · AC-DC Controllers And Regulators · SOIC-8

L6565D from STMicroelectronics, in a SOIC-8. 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 INV input Inverting input of the error amplifier; accepts output voltage feedback through resistor divider or optocoupler for primary or secondary regulation; operating range -0.3 to 7V.
2 COMP output Output of the error amplifier for loop compensation network; upper clamp voltage 5.5V, lower clamp voltage 2.25V; operating range -0.3 to 7V.
3 VFF input Line voltage feedforward input; modulates pulse-by-pulse current limitation setpoint based on converter input voltage through resistor divider; operating range 0 to 3V.
4 CS input Current sense input to PWM comparator; primary current sensed through resistor is compared to internal reference to determine MOSFET turn-off; hiccup-mode OCP triggered at 2.0V; operating range -0.3 to 7V.
5 ZCD input Transformer demagnetization sensing input for quasi-resonant operation or external synchronization; negative-going edge below 1.6V triggers MOSFET turn-on after arming at positive-going edge above 2.1V; trigger blanked 3.5µs minimum after MOSFET turn-off.
6 GND power_in Ground; current return for both signal part of the IC and gate driver.
7 GD output Gate driver totem pole output stage; drives power MOSFET or IGBT with ±400mA peak current capability (source and sink).
8 VCC power_in Supply voltage input for signal and gate driver circuits; operating range after turn-on 10.3 to 18V with UVLO thresholds; electrolytic capacitor typically connected between this pin and ground.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOIC-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: L6565D
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: l6565d-etched.step / l6565d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l6565d.step / l6565d.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (17 pp, sha256 a6588853fc1545c6, retrieved 2026-10-03, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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