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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 38MA 24SOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- 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：PWM
- Applications：LED Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOP
- Grade：-
- Qualification：-
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Overview
The IS31FL3218-GRLS2-TR is an 18-channel LED driver IC from Lumissil Microsystems, designed for lighting applications. It features I2C control and supports both Boost and Buck topologies. The device operates on a supply voltage range of 2.7 V to 5.5 V, with a maximum output current of 38 mA per channel. It functions within a temperature range of -40°C to +85°C and utilizes a QFN-24 package. The internal switching frequency is 400 kHz, and the maximum power supply current is 5.25 mA.
Feature Summary
- Integrates 18 independent constant current channels for precise LED control
- Supports flexible Boost and Buck converter topologies for various LED configurations
- Enables digital brightness adjustment through standard I2C communication interface
Applications
- General LED lighting systems requiring multi-channel drive
- Battery-powered devices utilizing boost or buck LED architectures
- Compact lighting modules needing I2C programmable control
Procurement Notes
Verify the specific suffix GRLS2 against official Lumissil documentation to confirm package type and tape/reel specifications. Ensure compatibility with your system's I2C bus voltage levels and check thermal requirements for the QFN-24 package under full load conditions before finalizing procurement.
Selection Notes
Select this component when an 18-channel solution with integrated switching regulators is required. It is suitable for designs needing I2C configurability and operation across a wide input voltage range. Consider the 38 mA output limit and QFN-24 footprint constraints during PCB layout planning.
Part Context
This part belongs to the IS31FL3218 series of LED drivers. It is manufactured by Lumissil Microsystems, a provider of analog and mixed-signal semiconductor solutions. The series targets efficient lighting control with integrated power stages and digital interfaces.
Replacement Considerations
The datasheet lists IS31FL3218-QFLS2-TR as a related variant. Verify if the suffix change indicates a different package or qualification level before substitution.
