LM3633YFQR

LED Driver IC Overview

The LM3633YFQR is a Texas Instruments LED lighting driver IC designed as a complete power solution. It features six independent output channels, each capable of delivering up to 30 mA. The device utilizes Boost and Charge Pump topologies to drive LEDs from an input voltage range of 2.7 V to 5.5 V, achieving output voltages up to 40 V. Operating frequencies are selectable at 500 kHz or 1 MHz. Integrated MOSFETs and charge pumps simplify design, while thermal shutdown protection ensures reliability across an operating temperature range of -40°C to +85°C in a DSBGA-20 package.

LED Driver IC Feature Summary

• Integrates high-side N-channel MOSFETs and charge pump circuitry for simplified LED driving
• Provides six independent current-controlled output channels for flexible LED configurations
• Includes thermal shutdown protection to safeguard the device during overtemperature conditions

LED Driver IC Applications

• Backlighting for mobile devices and portable electronics
• LED indicator arrays in consumer appliances
• General-purpose LED illumination systems requiring multi-channel control

LED Driver IC Procurement Notes

Verify the specific suffix 'YFQR' against the official datasheet to confirm package type (DSBGA-20) and tape/reel specifications. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Confirm that the required output current per channel does not exceed the 30 mA limit. Check for AEC-Q100 qualification if automotive use is intended, as this variant may differ from standard industrial versions.

LED Driver IC Selection Notes

Select the LM3633YFQR when designing compact LED drivers requiring multiple channels from a single low-voltage source. It is suitable for applications needing integrated power switches to reduce external component count. Consider the 500 kHz/1 MHz frequency options for optimizing inductor size versus efficiency. Ensure the input voltage stays within 2.7 V to 5.5 V and the total LED string voltage does not exceed the 40 V output capability.

LED Driver IC Part Context

Part of the LM3633 series, this component belongs to Texas Instruments' portfolio of LED lighting driver ICs. It is categorized under Switching Voltage Regulators and Driver ICs. The device is designed for space-constrained applications where integrated power management and multi-channel control are critical. It complements other PMIC solutions by providing dedicated LED driving capabilities with built-in protection features.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers: None identified in provided documentation.