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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 42MA 48ETQFP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：28
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：42mA
- Frequency：400kHz ~ 1MHz
- Dimming：I2C
- 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 IS31FL3733A-TQLS4-TR is a general-purpose LED matrix driver featuring a 12x16 dot configuration with individual auto-breath functionality. It provides 28 linear constant current outputs, each capable of delivering up to 42mA. The device supports I²C and PWM dimming interfaces for precise brightness control. It operates within a supply voltage range of 2.7V to 5.5V and is housed in a 48-pin eTQFP package measuring 7mm x 7mm.
Feature Summary
- Supports 12x16 dot matrix configurations with individual LED auto-breath programming
- Features 28 linear constant current outputs for uniform LED illumination
- Enables precise brightness control via I²C compatible interface and PWM dimming
Applications
- Custom LED dot matrix displays
- Numeric and alphanumeric character indicators
- Status indication panels requiring dynamic breathing effects
Procurement Notes
Verify the specific suffix 'TQLS4' confirms the 48-pin eTQFP (7x7mm) package variant. Ensure the 'A' designation matches the required revision level for your design. Confirm I²C address settings and output current calibration requirements against your system specifications before finalizing procurement.
Selection Notes
Select this component when a high-density 192-LED matrix requires individual pixel control without external multiplexing complexity. The linear constant current architecture simplifies thermal management compared to switching drivers. Consider the eTQFP footprint constraints and I²C bus speed limitations relative to your microcontroller capabilities.
Part Context
This part belongs to the IS31FL3733 family of LED matrix drivers from Lumissil Microsystems. It shares core driver technology with variants like the IS31FL3733-QFLS4-TR but differs in package type. The family is designed for applications needing compact form factors and flexible display configurations.
Replacement Considerations
The IS31FL3733-QFLS4-TR serves as a pin-compatible alternative using a QFN package instead of eTQFP. Verify mechanical clearance and soldering profile compatibility when substituting between these package types.
