LM3631YFFR

LED Driver IC Overview

The LM3631YFFR is a dual-output LED driver IC manufactured by Texas Instruments, designed for portable applications. It integrates a boost converter and a charge pump to drive two independent LED channels with up to 25mA output current per channel. The device operates on a supply voltage range of 2.7V to 5V and supports PWM dimming for brightness control. Packaged in a compact 24-DSBGA (2.59x1.89mm) footprint, it functions within a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Integrates both boost and charge pump topologies to efficiently drive dual LED strings from a single cell battery.
• Supports high-resolution PWM dimming for precise backlight brightness control.
• Features a small form factor suitable for space-constrained mobile devices.

LED Driver IC Applications

• Mobile phone LCD backlighting
• Camera flash illumination
• Portable electronic display systems

LED Driver IC Procurement Notes

Verify the specific suffix YFFR against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with RoHS3 standards and check moisture sensitivity level requirements during storage and handling. Confirm that the ordering part number matches the exact electrical characteristics required for the target design.

LED Driver IC Selection Notes

Select this component when designing circuits requiring dual-channel LED driving from a single lithium-ion cell. It is appropriate for applications needing simultaneous backlight and flash functionality or dual-zone lighting. Consider the thermal performance and PCB area constraints associated with the DSBGA package when finalizing the layout.

LED Driver IC Part Context

This part belongs to the LM3631 family of LED drivers from Texas Instruments. It is specifically engineered for portable consumer electronics where power efficiency and board space are critical. The device complements other PMIC solutions by providing dedicated, integrated power stages for LED loads without requiring external inductors for the charge pump section.

LED Driver IC Replacement Considerations

The LM3631EVM is an evaluation board for this IC, not a substitute. No direct parameter-equivalent replacement parts are listed in the provided documentation. Verify pin-to-pin compatibility if considering alternative dual-output LED drivers from other manufacturers.