LM27964SQ-C/NOPB

Overview

The LM27964SQ-C/NOPB is a Texas Instruments LED lighting driver IC featuring seven output channels. It utilizes a switched capacitor topology with an operating frequency range of 500 kHz to 900 kHz. The device supports I2C compatible brightness control and operates within a supply voltage range of 2.7 V to 5.5 V. Output current per channel is specified at 30 mA, with a maximum duty cycle of 100%. It functions in temperatures from -30°C to +85°C and is housed in a 24-WQFN package.

Feature Summary

• Integrates seven independent constant-current outputs for multi-LED applications
• Provides digital brightness control via an I2C compatible interface
• Employs a switched capacitor charge pump topology for efficient voltage regulation

Applications

• White LED backlighting systems
• Portable electronic display illumination
• Multi-zone LED lighting control

Procurement Notes

Verify the specific suffix 'C' against the manufacturer's latest documentation to confirm availability status and exact electrical tolerances. Cross-reference the datasheet revision date to ensure compatibility with current design requirements. Confirm that the WQFN-24 package dimensions match the target PCB footprint. Validate RoHS compliance details as indicated in official component specifications.

Selection Notes

Select this component when designing circuits requiring multiple LED channels driven by a single controller. The I2C interface allows for simplified system architecture compared to parallel control lines. Ensure the input voltage range aligns with the power source. Consider the thermal performance of the WQFN package for high-density layouts. Verify that the 30 mA output current meets the target LED forward current requirements.

Part Context

This part belongs to the LM27964 series of LED drivers from Texas Instruments. It is designed for portable devices requiring compact solutions for white LED illumination. The series offers integrated switching elements to reduce external component count. The SQ variant indicates a specific package configuration suitable for surface mount assembly processes.

Replacement Considerations

Direct substitute: LM27964SQ-A/NOPB. Verify pinout and electrical parameter equivalence before implementation.