component
KA3843
Public Made by Adomby adom
Gcore AC-DC Controllers & Regulators, DIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownKA3843
Gcore · AC-DC Controllers & Regulators · DIP-8
KA3843 from Gcore, in a DIP-8. 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 | COMP | output | Error amplifier output; can be used for loop compensation. |
| 2 | VFB | input | Inverting input of error amplifier, typically connected through a resistive voltage divider to the switch mode power supply output. |
| 3 | Sen | input | Current sensor input; voltage proportional to inductor current is connected here; PWM determines output shutdown based on voltage detected at this pin. |
| 4 | OSC | passive | Oscillator pin; connect RT to VREF and CT to ground to control oscillator frequency and maximum output duty cycle up to 500 kHz. |
| 5 | GND | power_in | Ground; reference potential. |
| 6 | OUTPUT | tri_state | Output directly drives the power MOSFET gate; peak current of 1 A can be sourced or sunk from this pin. |
| 7 | Vcc | power_in | Positive power supply voltage for the control IC. |
| 8 | VREF | power_in | Reference voltage output; provides charging current for timing capacitor CT through external resistor RT. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Gcore |
| Package | DIP-8 |
| Category | Power Supply Chip |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
KA3843 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
ka3843-etched.step/ka3843-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ka3843.step/ka3843.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Gcore datasheet (8 pp, sha256
afd5a995d05f9f7d, retrieved 2026-09-22, 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 0.2, 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).