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Product Detailed Parameters
- Description：36-CHANNEL LED DRIVER
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：No
- Number of Outputs：36
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：25mA
- Frequency：-
- Dimming：I2C, PWM, SPI
- Applications：General Purpose
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：48-TQFP Exposed Pad
- Supplier Device Package：48-eTQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The IS31FL3246A-TQLS4-TR is a 36-channel LED driver IC from Lumissil Microsystems, housed in a 48-eTQFP (7x7 mm) package. It provides linear constant current outputs with a typical channel current of 25 mA. The device supports I²C, PWM, and SPI dimming interfaces for precise control. Operating voltage ranges from 2.7 V to 5.5 V, with a maximum supply current of 3.5 mA. It functions within an ambient temperature range of -40°C to +125°C.
Feature Summary
- Integrates 36 independent constant current channels for uniform LED matrix illumination.
- Supports multiple digital control protocols including I²C, PWM, and SPI for flexible system integration.
- Features high-resolution pulse width modulation for smooth brightness adjustment.
Applications
- LED matrix displays
- General lighting applications
- Backlighting systems
Procurement Notes
Verify the specific package type against design requirements, as this component uses a 48-eTQFP footprint which differs from other variants in the series. Confirm interface compatibility with the host controller before finalizing procurement. Ensure thermal management solutions align with the specified operating temperature range.
Selection Notes
Select this variant when a 48-pin eTQFP package is required instead of the QFN options available in the same family. It is suitable for designs needing 36 channels with combined I²C, PWM, and SPI support. Consider the 25 mA output current capability relative to the target LED forward voltage and power dissipation constraints.
Part Context
This part belongs to the IS31FL3246A series of general-purpose LED matrix drivers. It shares functional similarities with the IS31FL3246-QFLS4-TR but utilizes a different surface-mount package. The series addresses various lighting needs through monolithic solutions controlled by external microcontrollers.
Replacement Considerations
The IS31FL3246-QFLS4-TR is a functionally similar alternative within the same product line, though it utilizes a 44-QFN package rather than the 48-eTQFP form factor. Verify pinout compatibility and board layout changes if substituting between these package types.
