IS31FL3740-QFLS4-TR

Overview

The IS31FL3740-QFLS4-TR is a linear LED display driver manufactured by Lumissil Microsystems. It features four non-isolated outputs with a maximum current of 84mA per channel. The device operates on a supply voltage range of 2.7V to 5.5V and supports PWM dimming at a frequency of 1MHz. It utilizes an I2C-compatible interface for programming and control. The component is housed in a 20-QFN (5x5mm) package and is rated for an operating temperature range of -40°C to +125°C.

Feature Summary

• Supports 3x4 LED matrix configurations with 1/12 cycle rate
• Integrates auto breath function for dynamic lighting effects
• Enables precise brightness control via I2C compatible digital interface

Applications

• LED dot matrix displays
• Numeric indicator panels
• Consumer electronics status indicators

Procurement Notes

Verify the specific suffix QFLS4 to confirm the 20-QFN (5x5mm) package variant, as other suffixes like ZLS4 indicate different packages. Confirm end-of-life status if sourcing from secondary markets, as some variants are marked NRND. Ensure I2C address configuration matches system requirements before integration.

Selection Notes

Select this component for applications requiring compact 3x4 matrix driving with low power consumption. The 84mA output capability suits standard indicator LEDs. Verify thermal management needs given the high junction temperature rating. Compare against IS31FL3741A if more channels or different interfaces are required.

Part Context

This part belongs to the IS31FL3740 series of general-purpose LED matrix drivers. It is designed for simple control of small LED arrays without complex multiplexing circuitry. The series offers various package options including QFN and TSSOP to fit different board space constraints.

Replacement Considerations

Direct substitutes include IS31FL3740-QFSL4-TR for alternative QFN pinouts. Check datasheets for electrical compatibility when replacing with older IS31FL3740 variants.