IS31FL3197-QFLS2-TR

Overview

The IS31FL3197-QFLS2-TR is a 4-channel Fun LED driver IC manufactured by Lumissil Microsystems. It integrates a charge pump to support high-side LED driving within an input voltage range of 2 V to 5.5 V. The device provides 10 mA output current per channel and operates via I2C interface for dimming control. It is housed in a QFN-16 (4x4 mm) package with exposed pad, suitable for space-constrained designs.

Feature Summary

• Integrates internal charge pump for efficient high-side LED drive capability
• Supports I2C digital interface for precise brightness and color control
• Compact QFN-16 footprint designed for mobile and portable applications

Applications

• Smartphone front and rear camera flash illumination
• Mobile device ambient light and notification indicators
• Portable consumer electronics display backlighting

Procurement Notes

Verify the specific suffix 'QFLS2' against the manufacturer's latest datasheet to confirm pinout and electrical specifications match your design requirements. Confirm RoHS compliance status and moisture sensitivity level prior to PCB assembly planning. Check for obsolescence notices as automotive or industrial variants may have different lifecycle statuses.

Selection Notes

Select this component when a compact solution with integrated charge pump is required for driving multiple LEDs from low-voltage sources. Ensure the system I2C bus speed supports the device's maximum clock frequency. Verify that the 10 mA output current meets the LED forward current requirements without external amplification.

Part Context

This part belongs to the IS31FL319x series of Fun LED drivers, which are optimized for multimedia applications requiring dynamic lighting effects. The series typically offers multi-channel integration with individual current control, distinguishing it from standard constant-current regulators by its focus on user experience features like breathing and fading effects.

Replacement Considerations

Direct substitutes include the IS31FL3196-QFLS2-TR, which offers six channels instead of four but shares similar packaging and interface characteristics. Designers should verify pin compatibility and software register mapping before swapping between these variants in existing layouts.

FAQ

What is the maximum operating temperature for the IS31FL3197-QFLS2-TR?

The maximum operating temperature is +85°C for the commercial grade variant.

Does the IS31FL3197-QFLS2-TR require external components for the charge pump?

Yes, external capacitors are required to connect to the charge pump pins to generate the necessary boost voltage for LED driving.