LP5523TMX/NOPB

LED Driver IC Overview

The LP5523TMX/NOPB is a Texas Instruments LED lighting driver IC featuring nine output channels designed for RGB and White LED configurations. It utilizes an internal charge pump topology to drive current-mode outputs with a maximum output current of 25.5 mA per channel. The device operates within a supply voltage range of 2.7 V to 5.5 V and includes I2C control interfaces for programming. It functions at a switching frequency of 1.25 MHz and supports adjustable output voltages. The component is housed in a DSBGA-25 package and operates reliably between -30°C and +85°C.

LED Driver IC Feature Summary

• Integrates nine independent current-mode output channels suitable for complex RGB and White LED arrays.
• Incorporates an internal charge pump circuit to facilitate efficient LED driving without external inductors.
• Provides digital configuration and dimming capabilities through standard I2C communication protocols.

LED Driver IC Applications

• RGB and White LED backlighting systems
• Programmable LED indicator arrays
• Multi-channel LED lighting controllers

LED Driver IC Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance and RoHS standards as documented by the manufacturer. Confirm the DSBGA-25 package dimensions match your PCB footprint requirements. Ensure the I2C address configuration aligns with your system bus architecture. Check that the input voltage range covers your application's supply variations.

LED Driver IC Selection Notes

Select this component when nine individually controllable LED channels are required within a compact form factor. The integrated charge pump simplifies design by reducing external component count compared to inductive solutions. Consider the 25.5 mA output limit to ensure it meets the forward current requirements of the target LEDs. Verify thermal performance within the specified operating temperature range for the intended enclosure.

LED Driver IC Part Context

This part belongs to the LP5523 series of programmable LED drivers from Texas Instruments. It is distinct from the LP5521, which offers three channels, and the LP5524, which provides four channels. The TMX suffix denotes the tape and reel packaging variant, while NOPB confirms the absence of lead and brominated flame retardants.

LED Driver IC Replacement Considerations

Direct pin-to-pin replacements within the same family include LP5521TMX/NOPB for reduced channel counts or LP5524TMX-5/NOPB for different channel configurations. Cross-family substitutes require verification of electrical parameters and interface compatibility.

LED Driver IC FAQ

What is the maximum output current per channel?

The LP5523TMX/NOPB supports a maximum output current of 25.5 mA per channel.

Does the device require external inductors for its power stage?

No, the LP5523TMX/NOPB uses an internal charge pump topology, eliminating the need for external inductors.

How is the LED brightness controlled?

Brightness and color mixing are managed via I2C digital control registers allowing for precise programming.