CAT4016Y-T2

Overview

The CAT4016Y-T2 is a 16-channel constant current LED driver IC manufactured by onsemi. It operates with a logic supply voltage range of 3 V to 5.5 V and supports a serial interface clock frequency up to 25 MHz. The device provides an output current per channel ranging from 2 mA to 100 mA, with a maximum high-level output current capability of 80 mA for this specific variant. It features PWM dimming control and is housed in a 24-pin TSSOP package. The component functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates 16 independent constant current channels for uniform LED illumination
• Supports high-speed serial data input for simplified control architecture
• Enables precise brightness adjustment through pulse-width modulation dimming

Applications

• LED display signage systems
• General LED lighting fixtures
• Industrial indicator arrays

Procurement Notes

Verify the specific suffix 'Y' against the datasheet to confirm the 80 mA output current rating, as other variants may differ. Confirm the TSSOP-24 package type matches the PCB footprint requirements. Ensure the 3 V to 5.5 V supply range aligns with the system design. Check for end-of-life status or alternative sourcing options if long-term availability is critical.

Selection Notes

Select this component when a high channel count is required for large LED matrices. The integrated shift register functionality reduces microcontroller pin usage. Verify that the 80 mA per channel limit meets the forward current requirements of the selected LEDs. Consider thermal management solutions given the linear regulation nature of the driver.

Part Context

This part belongs to the CAT4016 family of LED drivers from onsemi. It shares core architectural similarities with models like the CAT4016VS but differs in output current specifications and packaging. The family is designed for applications requiring multiple independently controlled LED outputs with minimal external components.

Replacement Considerations

Direct substitutes include the CAT4016VS-T2, though output current ratings must be verified. Other 16-channel LED drivers from different manufacturers may require significant schematic and firmware modifications due to interface differences.