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LP3320B6F

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by Ray

LOWPOWER AC-DC Controllers and Regulators, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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LP3320B6F

LOWPOWER · AC-DC Controllers and Regulators · SOT-23-6

LP3320B6F from LOWPOWER, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 LX output Output switching node. Drain of the internal 1.5A N-MOSFET; connect to the boost inductor and Schottky diode. 400mΩ on-resistance, absolute max 46V to GND.
2 GND power_in Ground pin. Connect to a solid ground plane close to the input/output capacitor returns for low noise coupling.
3 FB input Feedback reference voltage pin. Connect a sense resistor between the WLED cathode string and ground; the LED current is set by ILED = 250mV / R1. Feedback reference is 250mV typical (240-260mV), input bias ~50nA. Absolute max 46V to GND.
4 EN input Chip enable, active high (VIH=1.4V min, VIL=0.4V max). Also serves as a voltage sensing input for over-voltage protection and accepts PWM dimming (100Hz-100kHz, down to 1% duty). High impedance input; pull to GND with 100kΩ resistor when the control signal is floating.
5 NC unconnected No connect. Leave floating or tie to ground; not internally bonded.
6 VIN power_in Supply input voltage pin, 2.5V to 5.5V operating range (absolute max 6.5V). Bypass with a 1uF (10uF recommended) ceramic capacitor to GND close to the pin to reduce input noise. UVLO trips at 2.3V with 0.25V hysteresis.

Key specifications

Parameter Value
Manufacturer LOWPOWER
Package SOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • LP3320B6F
  • LP3320B6FQVF

CAD (KiCad official)

  • Symbol: LP3320B6F
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LOWPOWER datasheet (9 pp, sha256 1960d9780c3eb2a8, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF