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UC2843BD

Public Made by Adom

by adom

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

componentpower management (pmic)uc2843bdfactory-2.0.0extractor-text
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docs Publish 0.1.0 · Ray 20d ago
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uc2843bd-etched.glb uc2843bd: factory component page (tier=lcsc) · Ray 20d ago
uc2843bd-etched.step uc2843bd: factory component page (tier=lcsc) · Ray 20d ago
uc2843bd-hero.glb uc2843bd: hero GLB from the etched model (keeps the MPN mark) · Ray 20d ago
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UC2843BD

lingxingic · AC-DC Controllers And Regulators · SOP-8

UC2843BD from lingxingic, in a SOP-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 COMP output Compensation pin, the error amplifier output (比较端), whose sink current is rated at up to 10 mA (Isink(EA)) and whose open-loop gain is 65 dB minimum (90 dB typical).
2 VFB input Negative feedback input (负反馈) to the error amplifier, with a 2.5 V nominal reference (2.42 to 2.58 V) and input bias current of -0.1 µA typical (-2 µA maximum) at VFB = 5 V.
3 ISENSE input Current sense input (电流灵敏度) to the current-sense comparator, with a maximum input signal of 0.9 to 1.1 V and a current-sense gain of 3 V/V.
4 RT/CT passive Oscillator timing pin (振荡端) for the RT and CT timing network; the datasheet's test conditions are RT = 10 kΩ and CT = 3.3 nF, with 52 kHz typical oscillator frequency and 1.6 V peak-to-peak oscillation amplitude.
5 GROUND power_in Ground pin (地) for the controller; the datasheet gives no further electrical limit for this pin.
6 OUTPUT output Push-pull gate drive output (输出) for driving MOSFET power devices, rated at ±1 A output current.
7 Vi power_in Supply pin (电源) with a 30 V maximum rating from a low-impedance source, a 12 V to 25 V operating range in the electrical tests, and a 0.3 mA typical (1 mA maximum) start-up current.
8 VREF power_out Reference voltage output (参考电压) of 5.00 V typical (4.90 to 5.10 V at Io = 1 mA, Tj = 25 °C), with a short-circuit current of -30 to -180 mA.

Key specifications

Parameter Value
Manufacturer lingxingic
Package SOP-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: UC2843BD
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: uc2843bd-etched.step / uc2843bd-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uc2843bd.step / uc2843bd.glb are the bare package body.

Provenance

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

  • Datasheet: lingxingic datasheet (11 pp, sha256 065498dc909cbc66, retrieved 2026-10-09, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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