component

INK1105DN

Public Made by Adom

by adom

Cross chip LED Drivers, DFN-8-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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INK1105DN

Cross chip · LED Drivers · DFN-8-EP(2x2)

INK1105DN from Cross chip, in a DFN-8-EP(2x2). 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 DRV output LED drive pin; the datasheet gives a maximum DRV pin voltage of 7.0 V and a maximum DRV pin current of 800 mA.
2 VCC power_in Supply pin with built-in reverse-polarity protection, so no external protection device is needed; absolute range is -6.0 V to 6.0 V.
3 VREF power_out 2.1 V reference voltage output with a maximum load capability of 1 mA.
4 DIM input Dimming control pin for analog or digital dimming; in analog mode its voltage is attenuated 5x, and in digital mode it is compared with the CT pin voltage to produce the PWM signal.
5 FS0 input Dimming function select pin with an internal pull-up resistor.
6 CT passive Digital dimming frequency or flash frequency setting pin; a capacitor connected here sets the frequency.
7 FS1 input Dimming function select pin with an internal pull-up resistor.
8 FB input Feedback pin; a resistor connected from this pin to ground sets the LED drive current.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Cross chip
Package DFN-8-EP(2x2)
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 supply voltage range VCC 2.2 5.5 V 3
Static supply current ICC 500 1000 1500 uA DIM 悬空，VCC=5V，RFB=5Ω, VDRV=2V 3
Reverse-connection supply current ICCR -50 -10 uA VCC=-6V 3
Reference voltage output VREFO 2.05 2.1 2.15 V ILOAD=200uA 3
Supply regulation %/dVCC 0.1 0.3 % 3
Load regulation %/dIREF 0.1 0.3 % 3
Current-setting reference voltage VREFI 145 150 155 mV VDRV=0.5V, RFB=2Ω 3
Output saturation voltage VSAT 100 200 mV IOUT=200mA 3
Output current linear regulation %/dVCC 0.1 0.3 % RFB=2Ω，VDRV=2V，VCC=2.0~5.5V 3
Off-state output current IOUT 0.1 10 μA VDRV=7V， MODE=HIGH，DIM=0 3
PWM frequency FPWM 400 500 600 Hz CT=100nF 3
PWM frequency adjustment range 100 1000 Hz 3
Duty cycle range 0 100 % FPWM=200Hz 3
Oscillator source current ISOURCE 16 20 24 μA 3
Oscillator sink current ISINK 16 20 24 μA 3
50% duty-cycle drive accuracy D% 49.5 50 50.5 % FS=0，A/D=0 3
Recommended supply voltage VCC 2.3 5.5 V 3
Recommended continuous drive current IDD 500 mA 3
Recommended PWM frequency FPWM 0.1 1000 Hz 3
Recommended ambient temperature TA -20 125 °C 3
Supply voltage VCC (absolute maximum) VCC -6 6 V 2
DRV pin drive voltage (absolute maximum) VDRV 7 V 2
DRV pin drive current (absolute maximum) IDRV 800 mA 2
Other pin voltage (absolute maximum) VX -0.3 6 V 2
Continuous output current (absolute maximum) IOUTC 550 mA 2
Thermal resistance, transistor junction to pin (DFN2X2) Rth（j-s）2（DFN2X2） 60 °C/W 2
Maximum power dissipation (DFN2X2) P(DMAX1)（DFN2X2） 1200 mW 2
Operating ambient temperature range (absolute maximum) TA -40 125 °C 2
Operating junction temperature TJ 160 °C 2
Storage temperature TSTG -55 150 °C 2
ESD HBM rating ESD(HBM) 6000 V 2
Oscillator high voltage VH 1.15 V 3
Oscillator low voltage VL 0.15 V 3
Overtemperature protection trigger temperature TOTP 150 °C 3
Overtemperature protection release temperature TOTPR 130 °C 3

CAD (KiCad official)

  • Symbol: INK1105DN
  • Footprint: Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm
  • 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
  • 3D model files: ink1105dn-etched.step / ink1105dn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ink1105dn.step / ink1105dn.glb are the bare package body.

Provenance

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

  • Datasheet: Cross chip datasheet (7 pp, sha256 54ff346554e24d9f, retrieved 2026-10-18, 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