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Product Detailed Parameters
- Description：IC LED DRVR CTRLR PWM 35MA 32QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：-
- Internal Switch(s)：No
- Number of Outputs：16
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：35mA
- Frequency：400kHz ~ 1MHz
- Dimming：PWM
- Applications：LED Lighting
- 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 IS31FL3729-QFLS4-TR is a general-purpose LED matrix driver IC manufactured by Lumissil Microsystems. It supports configurable matrix sizes of 16x8 or 15x9 LEDs, totaling up to 159 addressable points. The device features 16 constant current output channels with a maximum output current of 35 mA per channel. It integrates both Boost and Buck DC/DC converter topologies for efficient power management. Control is achieved via a 1 MHz I2C compatible interface, supporting PWM dimming and dot correction functions. The IC operates within an input voltage range of 2.7 V to 5.5 V and is housed in a compact 32-WFQFN (4mm x 4mm) package.
Feature Summary
- Configurable LED matrix architecture supporting up to 159 pixels
- Integrated Boost and Buck DC/DC converter topologies
- 1 MHz I2C compatible programming interface
- Supports PWM dimming and individual dot correction
Applications
- LED matrix lighting systems
- General-purpose LED illumination
- Display backlighting applications
Procurement Notes
Verify the specific suffix QFLS4-TR against official Lumissil documentation to confirm the exact package type and tape-and-reel specifications. Ensure compatibility with the target system's I2C bus speed and voltage levels before integration. Cross-reference the datasheet for moisture sensitivity level and reflow soldering profile requirements to guarantee assembly reliability.
Selection Notes
Select this component when a flexible LED matrix configuration with integrated power conversion is required. The choice between Boost and Buck topology depends on the specific LED forward voltage relative to the supply voltage. Verify that the 35 mA output current meets the brightness requirements of the connected LEDs. Ensure the design accommodates the thermal dissipation characteristics of the 32-pin QFN package under maximum load conditions.
Part Context
This part belongs to the IS31FL3729 series of LED drivers from Lumissil Microsystems. The series is designed for applications requiring programmable LED matrices with high efficiency. The -QFLS4-TR suffix indicates the specific packaging and reel format. This family focuses on providing robust control interfaces and integrated power stages to simplify system design for LED lighting solutions.
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.
