LM2751SDX-A

Overview

The LM2751SDX-A is a regulated switched capacitor white LED driver manufactured by Texas Instruments. It operates within an input voltage range of 2.8V to 5.5V and utilizes a charge pump topology with fixed switching frequencies of 725kHz, 1.45MHz, or 2.9MHz. The device provides a single output capable of delivering up to 150mA, with a maximum output voltage of 4.5V. It is housed in a 10-pin WSON package and supports PWM dimming for brightness control.

Feature Summary

• Regulated constant current output for stable LED illumination
• Integrated charge pump topology eliminates external inductors
• Supports PWM dimming for precise brightness adjustment
• Low input and output voltage ripple characteristics

Applications

• White LED backlighting for portable devices
• LED indicator circuits in consumer electronics
• Battery-powered lighting systems requiring compact form factors

Procurement Notes

Verify the specific suffix against the official datasheet to confirm functional equivalence, as ordering codes may denote variations in packaging or temperature ranges. Ensure the component meets RoHS compliance requirements if specified for the target application. Cross-reference the manufacturer's lifecycle status to confirm availability and long-term supply stability before finalizing procurement decisions.

Selection Notes

Select this component when designing space-constrained LED drivers that require inductor-less solutions. The fixed frequency options allow for optimization of external capacitor sizes. Ensure the input voltage source remains within the 2.8V to 5.5V operational window. Consider the thermal performance of the WSON-10 package under continuous load conditions to maintain reliability.

Part Context

This part belongs to the LM2751 series of LED lighting driver ICs from Texas Instruments. It is designed specifically for driving white LEDs in applications where size and efficiency are critical. The series offers regulated output currents to ensure consistent brightness across varying input voltages and LED forward voltage drops.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with direct replacements by comparing pinout configurations, electrical specifications, and package dimensions against the original design requirements.