component

UC2842BNG

Public Unreviewed

by Ray

onsemi AC-DC Controllers and Regulators, PDIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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Contents

README

markdown

UC2842BNG

onsemi · AC-DC Controllers and Regulators · PDIP-8

UC2842BNG from onsemi, in a PDIP-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 Compensation output Error amplifier output; used for loop compensation. Also serves as the input to the PWM comparator (internally divided). Typical operating range 0-7.2 V.
2 Voltage Feedback input Inverting input of the error amplifier. Normally connected to the switching power-supply output through a resistor divider. Reference voltage is 2.5 V (typ).
3 Current Sense input Current-sense comparator input. Monitors the primary switch current via a sense resistor. Maximum input threshold is 1.0 V (typ); comparator gain 3.0 V/V.
4 RT/CT passive Oscillator timing pin. An external resistor to Vref and capacitor to GND set the switching frequency (guaranteed to 250 kHz, operation to 500 kHz).
5 GND power_in Combined signal and power ground return for the device (single ground pin in the 8-pin package).
6 Output output High-current totem-pole gate-drive output for the external power MOSFET. Rated 1.0 A source/sink; rise/fall times ~50 ns into 1.0 nF.
7 VCC power_in Positive supply input for the IC. UCX842B UVLO turn-on threshold is 16 V (typ), turn-off 10 V (typ). Absolute maximum 30 V. Startup current 0.3 mA (typ), operating 12 mA (typ).
8 Vref power_out 5.0 V (typ) trimmed reference output. Sources up to 20 mA; short-circuit protected at approximately -85 mA (typ).

Key specifications

Parameter Value
Manufacturer onsemi
Package PDIP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • UC2842BNG
  • UC2842BNGD1
  • UC2842BNGD1G
  • UC2842BNGD1R2G
  • UC2842BNGD
  • UC2842BNGDG
  • UC2842BNGDR2G

CAD (KiCad official)

  • Symbol: UC2842BNG
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: PDIP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
uc2842bng.step 271 KB You want the bare part, or you mark your own boards.
uc2842bng-etched.step 2.2 MB You want the part with UC2842BNG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 531 faces against 148 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: onsemi datasheet (25 pp, sha256 73603e023e6d2fe7, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF