component

STI9287CA

Public Made by Adom

by adom

TMI LED Drivers, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STI9287CA

TMI · LED Drivers · SOT-23-6

STI9287CA from TMI, in a SOT-23-6. 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 SW output Power switch output connected to the inductor as the switch node; the internal 150 mΩ N-channel MOSFET drives this pin, and the SW voltage absolute maximum is -0.3 V to 35 V.
2 GND power_in Ground pin for the device.
3 FB input Output voltage feedback pin that sets the LED current through R1, with a regulated feedback voltage of 250 mV typical for the STI9287CA (242 mV to 258 mV); it is a high-impedance input sensitive to noise.
4 EN input Chip enable and PWM dimming input that must be driven above 1.5 V to enable the part and below 0.4 V to turn it off, and must not be left floating.
5 OVP input Over-voltage sense input that measures the output voltage for open-circuit protection and must be connected to the output at the top of the LED string; the OVP threshold is 30 V typical on a rising output voltage.
6 IN power_in Power supply input with a 2.5 V to 5.5 V operating range that must be closely decoupled to GND with a 1 µF or greater ceramic capacitor.

Key specifications

Parameter Value
Manufacturer TMI
Package SOT-23-6
Category LED Drivers
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage Range VIN 2.5 5.5 V 4
UVLO Threshold 2.4 2.48 V 4
Shutdown Current 0.1 1 µA VEN=0V 4
Quiescent Current 180 300 µA VFB=120%*VREF, No switch 4
Regulated Feedback Voltage (STI9287CA) VFB 242 250 258 mV 4
Oscillation Frequency fOSC 1 1.2 1.4 MHz 4
EN High-Level Input Voltage 1.5 V 4
EN Low-Level Input Voltage 0.4 V 4
EN Leakage Current 0.1 1 µA VEN=3.7V 4
Output Voltage Range VOUT 30 V 3
Input Voltage Range VIN 2.5 5.5 V 3
TJ Operating Junction Temperature Range TJ -40 125 °C 3
Input Supply voltage VIN -0.3 7 V 2
SW, OVP voltage -0.3 35 V 2
EN/PWM voltage -0.3 V 2
Junction Temperature TJ 160 °C 2
Power Dissipation PD 600 mW 2
Storage Temperature Range -65 150 °C 2
Lead Temperature 260 °C Soldering, 10s 2
Peak Current Limit ISW_LIM 1.5 A VIN= 3.7V, Duty cycle=50% 4
OVP Threshold 30 V VOUT Rising 4
Junction-to-ambient thermal resistance θJA 200 °C/W Note 3: measured on JESD51-7, 4-layer PCB 3
Junction-to-case thermal resistance θJC 65 °C/W Note 3: measured on JESD51-7, 4-layer PCB 3

CAD (KiCad official)

  • Symbol: STI9287CA
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: sti9287ca-etched.step / sti9287ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sti9287ca.step / sti9287ca.glb are the bare package body.

Provenance

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

  • Datasheet: TMI datasheet (13 pp, sha256 2b1d97f5672b0764, retrieved 2026-10-18, tier: lcsc)
  • 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