component
DP2291
Public Made by Adomby adom
Shenzhen Developer Microelec AC-DC Controllers & Regulators, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownDP2291
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dp2291.step/dp2291.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).