component
UC2843BD
Public Made by Adomby adom
lingxingic AC-DC Controllers And Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, 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
markdownUC2843BD
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uc2843bd.step/uc2843bd.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).