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Product Detailed Parameters
- Description：24-CHANNEL LED DRIVER
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：No
- Number of Outputs：24
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：25.3mA
- Frequency：-
- Dimming：I2C, PWM
- Applications：General Purpose
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The IS31FL3254-QFLS4-TR is a 24-channel LED driver IC manufactured by Lumissil Microsystems. It features a linear constant current topology with an output current of 25.3 mA per channel. The device supports I2C and PWM dimming interfaces and operates within a supply voltage range of 2.7 V to 5.5 V. It is housed in a 32-WFQFN package (4 mm x 4 mm) with an exposed pad, suitable for surface mount installation.
Feature Summary
- Provides 24 independent constant current channels for uniform LED illumination
- Supports dual dimming control via I2C interface and PWM signals
- Linear topology design ensures stable current regulation without internal switching noise
Applications
- LED lighting driver circuits
- General-purpose LED matrix displays
- Industrial FXLED applications
Procurement Notes
Verify the specific suffix QFLS4 against the manufacturer's latest datasheet to confirm pinout and electrical characteristics match your design requirements. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) during storage handling. Ensure the 32-QFN footprint matches your PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when a high-density solution with 24 channels is required in a compact 4x4 mm package. It is appropriate for designs needing precise linear current regulation at 25.3 mA. Consider the I2C addressability if multiple devices are used on the same bus. Verify thermal dissipation capabilities given the linear topology and ambient operating temperature range of -40°C to 125°C.
Part Context
This part belongs to the IS31FL32 series of LED lighting drivers from Lumissil Microsystems. These industrial-grade components are designed for applications requiring wide LED support ranges and EMI noise reduction. The series typically integrates advanced control features for brightness and color mixing in professional lighting environments.
Replacement Considerations
Check for direct substitutes within the IS31FL32 family that offer compatible pinouts or channel counts. Verify equivalent current ratings and package dimensions for any cross-references to ensure mechanical fit.
