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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 38MA 24QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：18
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：38mA
- Frequency：-
- Dimming：I2C
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The IS31FL3218-QFLS2-TR is an 18-channel LED lighting driver IC manufactured by Lumissil Microsystems. It operates within a supply voltage range of 2.7 V to 5.5 V and supports both Boost and Buck topologies. The device delivers up to 38 mA output current per channel with adjustable output voltage. It features I2C control, a 400 kHz operating frequency, and is housed in a QFN-24 package. The component functions reliably between -40°C and +85°C.
Feature Summary
- Supports 18 constant current channels for individual LED control
- Integrates I2C interface for digital dimming and configuration
- Compatible with Boost and Buck converter topologies
- Includes UART interface compatible with CANFD PHY
Applications
- Automotive interior lighting systems
- Dashboard and instrument cluster illumination
- Ambient cabin lighting applications
- General LED matrix driving circuits
Procurement Notes
Verify the specific suffix QFLS2 against official Lumissil documentation to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure compatibility with your PCB footprint for the QFN-24 package. Confirm that your design accounts for the 400 kHz I2C clock speed and the required pull-up resistors for reliable communication.
Selection Notes
Select this component when an 18-channel solution is required with integrated linear regulation capabilities. It is suitable for designs needing precise PWM dimming without external microcontrollers for basic control. Consider the thermal performance of the QFN-24 package relative to your total channel load. Verify that the input voltage range aligns with your system's power supply rails.
Part Context
This part belongs to the IS31FL3218 series of LED drivers from Lumissil Microsystems. It is designed specifically for high-density LED applications requiring multiple independent channels. The series emphasizes compact integration and digital control interfaces to simplify system architecture in space-constrained environments.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Lumissil Microsystems directly for qualified alternatives or pin-compatible replacements.
