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IS31LT3360-SDLS4-TR
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ISSI Integrated Silicon Solution LED Drivers, SOT-89-5. 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
markdownIS31LT3360-SDLS4-TR
ISSI Integrated Silicon Solution · LED Drivers · SOT-89-5
IS31LT3360-SDLS4-TR from ISSI Integrated Silicon Solution, in a SOT-89-5. 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 | LX | output | Drain of the internal power switch; the LX voltage absolute maximum is -0.3V to +50V and the switch output current is rated 1.5A absolute maximum (1.2A continuous mean). |
| 2 | GND | power_in | Ground reference (0V) for the device; the datasheet requires the thermal pad to be connected to GND and the VIN decoupling capacitor to be placed close to the VIN and GND pins. |
| 3 | ADJ | input | Multi-function on/off and brightness control: leave floating for nominal output (VREF = 1.2V), drive below 0.2V to turn the output off, drive 0.3V to 1.2V for 25% to 100% DC dimming, or drive with a PWM signal; the ADJ input impedance is 500kΩ typical and absolute maximum is -0.3V to +6.0V. |
| 4 | ISENSE | input | Connect the current sense resistor RS from this pin to VIN to set the nominal average output current IOUT_NOM = 0.1/RS, with the ISENSE voltage limited to VIN-5V to VIN+0.3V when VIN is at least 5V. |
| 5 | VIN | power_in | Input supply voltage of 6V to 40V; decouple to ground with a 0.1µF X7R ceramic capacitor placed as close to the device as possible, with absolute maximum input voltage of -0.3V to +50V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ISSI Integrated Silicon Solution |
| Package | SOT-89-5 |
| Category | LED 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 |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 6 | 40 | V | 4 | ||
| Input voltage, VIN | VIN | -0.3 | 50 | V | 4 | ||
| LX output voltage | VLX | -0.3 | 50 | V | 4 | ||
| Adjust pin input voltage | VADJ | -0.3 | 6 | V | 4 | ||
| Switch output current | ILX | 1.5 | A | 4 | |||
| Power dissipation | PD(MAX) | 0.94 | W | Note 2 | 4 | ||
| Operating temperature, TA = TJ | TA=TJ | -40 | 125 | °C | IS31LT3360-SDLS4-TR (Industrial range -40°C to +125°C) | 4 | |
| Storage temperature | TST | -55 | 150 | °C | 4 | ||
| Junction temperature, TJMAX | TJMAX | 150 | °C | 4 | |||
| ESD (HBM) | ESD (HBM) | 4 | kV | 4 | |||
| ESD (CDM) | ESD (CDM) | 750 | V | 4 | |||
| Quiescent supply current with output off | IINQ_OFF | 80 | 120 | 160 | μA | ADJ pin grounded | 4 |
| Quiescent supply current with output off (wide temp) | IINQ_OFF | 60 | 120 | 200 | μA | ○ TA = -40°C ~ +125°C (Note 3); ADJ pin grounded | 4 |
| Quiescent supply current with output switching | IINQ_ON | 450 | 600 | μA | ADJ pin floating | 4 | |
| Quiescent supply current with output switching (wide temp) | IINQ_ON | 450 | 680 | μA | ○ TA = -40°C ~ +125°C (Note 3); ADJ pin floating | 4 | |
| Mean current sense threshold voltage | VSENSE | 97 | 100 | 103 | mV | 4 | |
| Mean current sense threshold voltage (wide temp) | VSENSE | 95 | 100 | 105 | mV | ○ TA = -40°C ~ +125°C (Note 3) | 4 |
| Sense threshold hysteresis | VSENSEHYS | -15 | 15 | % | 4 | ||
| External control voltage range on ADJ pin | VADJ | 0.3 | 1.2 | V | DC brightness control | 4 | |
| DC voltage on ADJ pin to switch chip to quiescent (off) state | VADJ_OFF | 0.15 | 0.2 | 0.25 | V | VADJ falling | 4 |
| DC voltage on ADJ pin to switch chip to quiescent (off) state (wide temp) | VADJ_OFF | 0.11 | 0.2 | 0.29 | V | VADJ falling; ○ TA = -40°C ~ +125°C (Note 3) | 4 |
| DC voltage on ADJ pin to switch chip to active (on) state | VADJ_ON | 0.2 | 0.25 | 0.3 | V | VADJ rising | 4 |
| DC voltage on ADJ pin to switch chip to active (on) state (wide temp) | VADJ_ON | 0.16 | 0.25 | 0.34 | V | VADJ rising; ○ TA = -40°C ~ +125°C (Note 3) | 4 |
| LX switch leakage current | ILX_LEAK | 1 | μA | 5 | |||
| LX switch leakage current (wide temp) | ILX_LEAK | 2.5 | μA | ○ TA = -40°C ~ +125°C (Note 3) | 5 | ||
| LX switch ON resistance | RLX | 0.27 | 0.4 | Ω | 5 | ||
| LX switch ON resistance (wide temp) | RLX | 0.27 | 0.7 | Ω | ○ TA = -40°C ~ +125°C (Note 3) | 5 | |
| Continuous LX switch current | ILX_MEAN | 1.2 | A | Note 4 | 5 | ||
| Minimum switch ON time | tON_MIN | 200 | ns | LX switch 'ON' | 5 | ||
| Minimum switch OFF time | tOFF_MIN | 200 | ns | LX switch 'OFF' | 5 | ||
| Internal comparator propagation delay | tPD | 50 | ns | Note 4 | 5 | ||
| Thermal shutdown temperature | TSD | 150 | °C | Note 4 | 5 | ||
| Thermal shutdown hysteresis | TSD_HYS | 20 | °C | Note 4 | 5 | ||
| Resistance between ADJ pin and VREF | RADJ | 500 | kΩ | 5 | |||
| Internal reference voltage | VREF | 1.2 | V | Measured on ADJ pin with pin floating | 4 | ||
| ISENSE pin input current | ISENSE | 8 | μA | VSENSE = VIN-0.1V | 4 | ||
| Junction to ambient thermal resistance | θJA | 132.6 | °C/W | Junction to ambient | 4 |
CAD (KiCad official)
- Symbol:
IS31LT3360-SDLS4-TR - Footprint:
Package_TO_SOT_SMD:SOT-89-5 - 3D model: SOT-89-5 (KiCad packages3D, STEP)
- 3D model files:
is31lt3360-sdls4-tr-etched.step/is31lt3360-sdls4-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);is31lt3360-sdls4-tr.step/is31lt3360-sdls4-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ISSI Integrated Silicon Solution datasheet (15 pp, sha256
78e6340b12da8e4b, retrieved 2026-10-21, 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).