LP5861RSMR

LED Driver IC Overview

The LP5861RSMR is an 18-channel RGB LED driver IC from Texas Instruments, designed for matrix applications. It features 18 constant current sinks and 11 scan switches, supporting up to 198 LED dots. The device operates within a supply voltage range of 2.7 V to 5.5 V and delivers a maximum output current of 50 mA per channel. It integrates 8-bit analog dimming alongside 8-bit or 16-bit PWM dimming capabilities. The component functions at a switching frequency of 31.2 MHz and is housed in a 32-pin VQFN package.

LED Driver IC Feature Summary

• Integrates 18 constant current sinks with configurable scan switches for efficient LED matrix driving
• Supports combined 8-bit analog and 8-/16-bit PWM dimming for precise color and brightness control
• Includes I2C interface for simplified digital control and configuration

LED Driver IC Applications

• LED animation systems requiring dynamic visual effects
• RGB LED indication panels
• Matrix display modules

LED Driver IC Procurement Notes

Verify the specific suffix RSMR corresponds to the required 32-VQFN package and tape-and-reel quantity. Confirm that the logic pin compatibility requirements align with your system's 1.8 V, 3.3 V, or 5 V levels. Ensure the operating temperature range of -40°C to +85°C meets your environmental specifications before finalizing procurement.

LED Driver IC Selection Notes

Select this component when an 18-channel solution with integrated scan switching is required for RGB matrices. It is suitable for designs needing both analog and high-resolution PWM dimming. Consider the VQFN-32 footprint and thermal characteristics during PCB layout. Verify that the 50 mA sink current capacity matches the forward current requirements of the target LEDs.

LED Driver IC Part Context

This part belongs to the LP5861 series of LED lighting drivers. It shares functional similarities with the LP5862 but offers distinct channel configurations. The series is optimized for compact LED matrix applications where space efficiency and multi-color control are priorities. It complements other PMIC solutions by providing dedicated high-density LED driving capabilities.

LED Driver IC Replacement Considerations

Check for LP5862RSMR if different scan switch configurations are needed. Verify pinout compatibility with existing designs when substituting.