component
STI9287CA
Public Made by Adomby adom
TMI LED Drivers, SOT-23-6. 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
markdownSTI9287CA
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sti9287ca.step/sti9287ca.glbare 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, primaryclaude-haiku-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).