component

DP2291

Public Made by Adom

by adom

Shenzhen Developer Microelec AC-DC Controllers & Regulators, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs dp2291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers dp2291: viewers · Ray
dp2291-etched.fit.json dp2291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dp2291-etched.glb dp2291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dp2291-etched.step dp2291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dp2291.glb Publish 0.1.0 · Ray
dp2291.kicad_mod Publish 0.1.0 · Ray
dp2291.kicad_sym Publish 0.1.0 · Ray
dp2291.lbr Publish 0.1.0 · Ray
dp2291.step Publish 0.1.0 · Ray
package.json dp2291: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
page.json dp2291: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md Initial commit: component/dp2291 · Ray

DP2291

Shenzhen Developer Microelec · AC-DC Controllers & Regulators · SOT-23-6

DP2291 from Shenzhen Developer Microelec, 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 GND power_in Ground reference of the IC.
2 FB input Feedback input for loop regulation via photo-coupler; PWM duty cycle determined by this pin voltage and current sense signal; voltage range -0.3 to 7 V, open voltage 4.5 to 6 V, input impedance 25 kOhm.
3 SEL input Mode selection input; connect external capacitor between SEL and GND for CC/CV mode or leave floating for CV mode only; voltage range -0.3 to 7 V.
4 CS input Current sense input pin with 250 ns leading edge blanking; current limiting threshold 0.97 to 1.03 V; voltage range -0.3 to 7 V.
5 VDD power_in Power supply input; operating range 10.5 to 28.5 V, UVLO exit 21 V typical, UVLO enter 9.3 V typical, OVP threshold 31.5 V typical.
6 GATE output Totem-pole gate driver output to drive external MOSFET; 400 mA capability, output low 1 V, output high 7.5 V at 20 mA, clamp voltage 16 V.

Key specifications

Parameter Value
Manufacturer Shenzhen Developer Microelec
Package SOT-23-6
Category Power Supply Chip
Pins 6

CAD (KiCad official)

  • Symbol: DP2291
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: dp2291-etched.step / dp2291-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dp2291.step / dp2291.glb are the bare package body.

Provenance

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

  • Datasheet: Shenzhen Developer Microelec datasheet (14 pp, sha256 5aa7724af457f485, retrieved 2026-09-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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