component

INK1101ST

Public Made by Adom

by adom

Cross chip LED Drivers, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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INK1101ST

Cross chip · LED Drivers · SOT-23-5

INK1101ST from Cross chip, in a SOT-23-5. 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 VFB input LED current programming pin with 0.3V reference voltage; connect RFB between VFB and GND to set ILED=VFB/RFB.
2 GND power_in Ground.
3 DIM input PWM dimming control with built-in 20kΩ pull-up; high turns the driver on, low turns it off, and it can float or connect to VCC when unused (minimum pulse width 1.5µs).
4 VCC power_in IC power supply, 3.3 to 5.7V without a current limiting resistor, with an internal 5.5V shunt regulator.
5 DRV passive LED current sink (high-voltage output), rated -0.3 to 32V with up to 120mA continuous output current.

Key specifications

Parameter Value
Manufacturer Cross chip
Package SOT-23-5
Category Display Modules / LED Drivers / Display Drivers
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Chip power supply VCC 3.3 5.7 V Without current limiting resistor 3
Shunt Regulator VCC VCC 5.3 5.5 5.7 V R1=5K 3
Chip Current ICC 300 600 uA DIM none connection, VCC=5V, RFB=5Ω, VDRV=2V 3
DIM logic level high VDIMH 0.7 V 0.7VCC min 3
DIM logic level low VDIML 0.3 V 0.3VCC max 3
Output current high IOUTH 57 60 63 mA RFB=5Ω, DIM floating, VDRV=6V 3
Output current low IOUTL 0.1 uA RFB=5Ω, DIM grounded, VDRV=6V 3
Output Saturation voltage VSAT 0.1 0.3 V IOUT=120mA 3
Current Set Voltage VFB 285 300 315 mV VDRV=2V, RFB=5Ω 3
Line Regulation %/dVCC 0.1 0.3 % RFB=5Ω, VDRV=2V, VCC=3.3~5.5V 3
Load Regulation %/dVDRV 0.1 0.3 % RFB=5Ω, DIM floating, VDRV=0.4~5V 3
Delay time low to high tpLH 0.2 0.5 1 uS VCC=5V; VDRV=2V; RFB=5Ω 3
Delay time high to low tpHL 0.05 0.1 0.2 uS VCC=5V; VDRV=2V; RFB=5Ω 3
DIM pulse width tW(OE) 1.5 uS VCC=5V; VDRV=2V; RFB=5Ω 3
Output current raising time tR 0.1 0.2 0.4 uS VCC=5V; VDRV=2V; RFB=5Ω 3
Output current falling time tF 0.1 0.2 0.4 uS VCC=5V; VDRV=2V; RFB=5Ω 3
VCC VCC -0.3 5.8 V 2
DIM Voltage VDIM -0.3 5.8 V -0.3 to VCC+0.3 V (max shown at VCC=5.5V not printed; printed as VCC+0.3) 2
VFB Voltage VFB -0.3 6 V 2
DRV Voltage VDRV -0.3 32 V ILED=0 2
Continuous Output Current IOUTC 120 mA VDRV=1V 2
Operation Ambient Temperature TA -40 85 °C 2
Operation Junction Temperature TJ 125 °C 2
Storage Temperature TS -55 150 °C 2
ESD (HBM) ESD(HBM) 6000 V 2
Thermal Resistance Rth(j-a)2 187.5 °C/W Labelled SOT89-5 in table 2
OTP temperature TOTP 150 °C Guaranteed by design, not tested 3
OTP release temp. TOTPR 125 °C Guaranteed by design, not tested 3

CAD (KiCad official)

  • Symbol: INK1101ST
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ink1101st-etched.step / ink1101st-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ink1101st.step / ink1101st.glb are the bare package body.

Provenance

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

  • Datasheet: Cross chip datasheet (8 pp, sha256 7182ca99f90e30cc, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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