component
INK1101ST
Public Made by Adomby adom
Cross chip LED Drivers, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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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README
markdownINK1101ST
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ink1101st.step/ink1101st.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).