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DX3112E

Public Made by Adom

by adom

Dersem LED Drivers, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DX3112E

Dersem · LED Drivers · ESOP-8

DX3112E from Dersem, in a ESOP-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 NC unconnected Not connected; the datasheet specifies this pin as a floating (suspended) pin.
2 NC unconnected Not connected; the datasheet specifies this pin as a floating (suspended) pin.
3 REXT1 input Current-sampling port 1 for setting the channel 1 output current through an external REXT resistor; the datasheet limits its input voltage to -0.3 V to 7 V.
4 REXT2 input Current-sampling port 2 for setting the channel 2 output current through an external REXT resistor; the datasheet limits its input voltage to -0.3 V to 7 V.
5 OUT1 output Constant-current output port 1 driving LED string 1; the datasheet limits its voltage to -0.3 V to 500 V.
6 OUT2 output Constant-current output port 2 driving LED string 2; the datasheet limits its voltage to -0.3 V to 500 V.
7 NC unconnected Not connected; the datasheet specifies this pin as a floating (suspended) pin.
8 VIN power_in Chip supply input that powers the device from the high-voltage line; the datasheet limits its voltage to -0.3 V to 700 V and lists a minimum operating voltage of 18.5 V.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Dersem
Package ESOP-8
Category LED Drivers
Pins 9

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating voltage VIN 18.5 V 3
Quiescent operating current IDD 140 uA 3
Drive-side peak voltage (OUT1) VOUT1 500 V 3
Drive-side peak voltage (OUT2) VOUT2 500 V 3
Operating current (REXT1 channel) IREXT1 0 40 mA 3
Operating current (REXT2 channel) IREXT2 0 40 mA 3
Current-sampling input voltage (REXT1, REXT2) REXT1、REXT2 -0.3 7 V 2
VIN pin voltage VMAX1 0.3 700 V 2
OUT1, OUT2 pin voltage VMAX2 0.3 500 V 2
Operating junction temperature range TJ -40 150 °C 2
Operating temperature Tc -40 100 °C 2
Storage temperature range TSTG -55 150 °C 2
Maximum chip power dissipation PDMAX 1.25 W 2
Auxiliary discharge current IPULL 2.5 mA 25℃ 3
Constant-current voltage reference VREF1 0.6 V 25℃ 3
Current negative temperature compensation start point TSC 150 ℃ 3
Package thermal resistance, junction to ambient RTHJA 60 ℃/W 3

CAD (KiCad official)

  • Symbol: DX3112E
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: dx3112e-etched.step / dx3112e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dx3112e.step / dx3112e.glb are the bare package body.

Provenance

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

  • Datasheet: Dersem datasheet (7 pp, sha256 237977eb6677001a, retrieved 2026-10-17, 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