IS3750: I2C Buffering and Rendering Chip for Addressable LED

IS3750: I2C Addressable LED Controller

Sold by Inacks store

$2.28

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Stock available: 137
Components
I2C
LEDs

Description

The IS3750 handles Addressable LED signal generation autonomously, requiring no CPU intervention. It is capable of controlling up to 1200 LEDs, with a dedicated RAM of 3600 registers—one for each color of each LED.

Your microcontroller writes the LED data to the IS3750's internal memory map via I2C, and when writing a 1 to the SHOW register, the IS3750 will render and stream the data.

Since the IS3750 handles all the time-critical tasks of data rendering and streaming, your microcontroller can send data without being constrained by the timing requirements of the addressable LED protocol. This allows for more flexible data transmission over I2C, enabling the IS3750 to keep the LEDs perfectly synchronized.

The usage of the IS3750 also reduces CPU interruptions, peripheral usage (such as timers), and both flash and RAM consumption. Additionally, it eliminates the need for dedicated pins, as it operates over a shared I2C-serial interface.

The IS3750 saves engineering time and associated costs by handling the communication protocol, providing a reliable solution that reduces the time-to-market (TTM) for your product.

The device operates at 3.3V, with I2C pins that are 5V tolerant, allowing compatibility with both 3.3V and 5V systems. It is available in two temperature ranges: Industrial (-40ºC to +85ºC) and Extended (-40ºC to +125ºC).


Example Projects


How it Works?

Write the brightness value of each LED color to its corresponding register, then write a '1' to the SHOW register to update the LED colors.


Others

Download Documentation


Need an Evaluation Board?

The *Kappa3750Ard *is an *Arduino-form-factor *evaluation board that lets you easily prototype and play with the LEDs.

You can get it also on Tindie: https://www.tindie.com/products/inacks/is3750-eval-board-addressable-led-controller/

For more information about the Evaluation Board you can also check: www.inacks.com


Pick'n'Place

📦 Reels available for high-volume orders. Contact us.


Questions?

💬 Contact us anytime for support.

www.inacks.com

Links to code and documentation

Documentation (inacks.gitbook.io)

Code (github.com)

Shipping policy

We ship all products within 1 to 3 days from Spain using Correos, with a tracking number.

Delivery usually takes a few days to a week within Europe, and around one week for the rest of the world.

The seller

Inacks store

Terrassa, Barcelona, Spain
0 orders since May 12, 2025
We find communication protocols beautiful.
Implementing them as stacks inside chips connects us to the mindset of the engineers who designed them. You can feel the passion they put into solving communication challenges — whether it's for industrial systems, lighting, or sound.
But when you're building your own project, diving into protocol implementation can eat up a lot of engineering time (or your client's budget!).
So why not save that time and focus on what truly makes your product unique — instead of reinventing the wheel?