LM27965SQ

Overview

The LM27965SQ is a dual-display white LED driver IC from Texas Instruments, utilizing a charge-pump topology. It features nine constant current outputs with a maximum output current of 180 mA per channel. The device operates on an input voltage range of 2.7 V to 5.5 V and supports I2C-compatible brightness control. Key electrical parameters include an operating frequency of 1.27 MHz, output voltages between 2 V and 4 V, and a maximum supply current of 3.32 mA. It is housed in a 24-WQFN package and functions within a temperature range of -30°C to +85°C.

Feature Summary

• Highly integrated charge-pump design eliminating the need for external inductors
• I2C compatible interface for precise digital brightness control
• Capable of driving dual display configurations simultaneously

Applications

• Backlight systems for electronic displays
• Dual-screen mobile devices
• Portable electronics requiring efficient LED illumination

Procurement Notes

Verify the specific suffix (e.g., NOPB) against official datasheets to confirm RoHS compliance and exact pinout configuration. Confirm availability status as some variants may be discontinued or have limited stock. Ensure the ordering part number matches the required package type and temperature rating for your specific application environment.

Selection Notes

Select this component when designing circuits for dual-display backlighting that require inductor-less solutions to save board space. Consider the 180 mA output capability and 2.7 V to 5.5 V input range for compatibility with standard battery-powered systems. Verify that the I2C interface aligns with the host controller's communication protocol requirements.

Part Context

This device belongs to the LM27965 series of LED drivers. It is specifically engineered for applications demanding high efficiency and compact form factors. The series leverages capacitive switching technology to regulate LED currents without magnetic components, distinguishing it from inductive boost converters commonly used in similar lighting applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.