component

UC2844BD

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)uc2844bdfactory-2.0.0extractor-text
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UC2844BD

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

UC2844BD 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 Error amplifier output and compensation node; the datasheet limits the error amplifier output sink current to 10 mA maximum.
2 VFB input Error amplifier inverting input (negative feedback); the analog input range is -0.3 V to +6.3 V and the input bias current is -2 µA maximum at VFB = 5 V.
3 ISENSE input Current-sense input to the PWM comparator, with a current-sense gain of 3 V/V (typ) and a maximum input signal of about 1 V (typ) at pin 1 = 5 V.
4 RT/CT passive Oscillator timing node where RT and CT set the switching frequency; for RT = 6.2 kΩ and CT = 1 nF the datasheet gives 225-275 kHz at 25 °C, with 1.6 V (typ) peak-to-peak oscillator amplitude.
5 GROUND power_in Ground reference for the control circuitry.
6 OUTPUT output Push-pull gate drive output for driving MOSFET power devices, rated for ±1 A output current.
7 Vi power_in Supply input, with an absolute maximum of 30 V from a low-impedance source; for the UC2844 the undervoltage lockout is 16 V turn-on and 10 V turn-off.
8 VREF power_out 5.0 V reference output (4.90 V to 5.10 V at Io = 1 mA, Tj = 25 °C), specified for load currents up to 20 mA.

Key specifications

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

CAD (KiCad official)

  • Symbol: UC2844BD
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: uc2844bd-etched.step / uc2844bd-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uc2844bd.step / uc2844bd.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 2026-10-22, 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