LP5891MRRFR

LED Driver IC Overview

The LP5891MRRFR is a highly integrated common-cathode LED matrix driver featuring 48 constant current sources and 16 scan FETs. It supports a supply voltage range of 2.5 V to 5.5 V for both VCC and VR/G/B rails. The device provides 48 current source channels adjustable from 0.2 mA to 20 mA with channel-to-channel accuracy of ±0.5% typical and ±2% maximum. It includes 16 scan line switches with 190 mΩ RDS(ON). Gray scale control reaches up to 16 bits (65,536 steps), while global brightness offers 3-bit (8-step) control and color brightness provides 8-bit (256-level) adjustment. The internal GCLK rate ranges from 40 MHz to 160 MHz.

LED Driver IC Feature Summary

• Supports high-speed Continuous Clock Series Interface (CCSI) with rising-edge transmission mechanism for minimized electromagnetic interference.
• Enables on-the-fly detection and clearing of LED open circuits, weak shorts, and short circuits during operation.
• Features intelligent power saving mode reducing ICC to 0.9 mA and low standby current of 3.6 mA at 50 MHz GCLK.
• Includes built-in SRAM supporting multiplexing configurations from 1 to 64 paths.

LED Driver IC Applications

• Mini and micro LED matrix products
• Game keyboard RGB LED backlighting
• Audio mixers, DJ equipment, and broadcast displays

LED Driver IC Procurement Notes

Verify the specific suffix MRRFR against official Texas Instruments documentation to confirm package type, tape-and-reel specifications, and environmental compliance status. Ensure the ordering part number matches the required temperature range and functional variant, as suffixes define physical and regulatory attributes rather than electrical performance changes.

LED Driver IC Selection Notes

Select this component when designing systems requiring up to 48x16 LED matrices or 16x16 RGB pixels with single-device support. Consider stacking multiple units for larger displays up to 64x64 RGB. Verify that the application requires the specific 190 mΩ switch resistance and 16-bit PWM resolution provided by this driver architecture.

LED Driver IC Part Context

This device belongs to the LP5891 family of LED matrix drivers manufactured by Texas Instruments. It is designed for high-density display applications requiring precise current control and low EMI. The MRRFR suffix indicates a specific packaging configuration within this product line, distinct from automotive-qualified variants like the LP5891-Q1.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate the TLC6984ZXLR only if parameter equivalence is verified through independent datasheet comparison, noting differences in package and interface protocols.

LED Driver IC FAQ

What is the maximum gray scale control resolution?

The device supports a maximum of 16-bit (65,536 steps) PWM gray scale control.

Does the LP5891MRRFR support LED fault detection?

Yes, it supports LED open circuit, weak short, and short circuit detection and clearing during operation.