LM27965SQ-M/NOPB

Overview

The LM27965SQ-M/NOPB is a dual display white LED driver IC from Texas Instruments, designed for I2C-compatible brightness control. It operates within an input voltage range of 2.7 V to 5.5 V and supports output voltages between 2 V and 4 V. The device features a charge pump topology with an operating frequency ranging from 890 kHz to 1.57 MHz. It provides constant current outputs with a maximum output current of 180 mA per channel across eight channels. The component functions reliably within a temperature range of -30°C to +85°C and is housed in a WQFN-24 package.

Feature Summary

• Dual display white LED driver architecture with integrated I2C compatible brightness control interface
• Charge pump topology enabling efficient DC-DC regulation for LED string driving
• Configurable switching frequency range supporting flexible filter component selection

Applications

• Dual display backlight systems requiring independent white LED control
• Portable electronic devices utilizing I2C-based brightness management
• Mobile communication equipment with space-constrained power designs

Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official documentation to confirm it denotes a valid commercial variant distinct from standard or tape-and-reel versions. Ensure the ordering part number matches the exact package and temperature grade required for your design. Cross-reference the datasheet revision history to confirm pinout compatibility and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when designing dual-white LED backlight solutions requiring precise I2C dimming capabilities. The wide input voltage range suits battery-powered applications, while the charge pump topology eliminates the need for inductors. Consider the thermal performance of the WQFN-24 package and ensure the PCB layout supports the high-frequency switching requirements for optimal efficiency and noise reduction.

Part Context

This device belongs to the LM27965 series of LED lighting drivers manufactured by Texas Instruments. It is specifically engineered for display applications needing dual white LED strings. The series integrates regulation and control functions into a compact footprint, addressing the demand for high-efficiency, low-component-count solutions in modern portable electronics and mobile displays.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with direct replacements such as LM27965SQX/NOPB only through official Texas Instruments cross-reference tools and updated datasheets.

FAQ

What is the primary control interface for brightness adjustment?

The device utilizes an I2C compatible interface for digital brightness control.

Does the LM27965SQ-M/NOPB use inductive or capacitive topology?

It employs a switched capacitor (charge pump) topology for voltage regulation.