CAV4109V-GT2

Overview

The CAV4109V-GT2 is a 3-channel constant-current RGB LED driver from onsemi, designed for applications requiring precise color control without inductors. It supports independent programming of LED channel currents up to 175 mA via external resistors. The device features low dropout voltage operation of 0.4 V at full current, enabling efficient designs across wider supply voltage ranges. Each channel includes dedicated PWM inputs for dimming and an output enable pin. It operates within a supply voltage range of 3 V to 5.5 V and withstands up to 25 V on LED pins. The component is qualified under AEC-Q100 standards and functions reliably between -40°C and +105°C.

Feature Summary

• Three independent current sinks allow precise programming of individual LED channel currents up to 175 mA using external resistors.
• Integrated thermal shutdown protection automatically disables outputs when junction temperature exceeds safe limits to prevent damage.
• Dedicated PWM control inputs per channel enable high-frequency dimming, while a separate output enable pin manages global switching.

Applications

• Automotive interior ambient lighting systems
• Architectural and landscape accent lighting
• LCD display backlighting units

Procurement Notes

Verify the specific suffix GT2 corresponds to the required tape and reel packaging configuration for your assembly line. Confirm that the automotive qualification status meets your project's reliability requirements. Ensure the SOIC-16 package dimensions align with your PCB footprint design rules before finalizing procurement orders.

Selection Notes

Select this component when designing RGB lighting circuits that demand independent current regulation for each color channel. It is suitable for systems where inductor-less topologies are preferred to reduce component count and size. Consider its wide operating temperature range for environments subject to significant thermal fluctuations.

Part Context

This part belongs to the CAT4109 family of LED drivers manufactured by onsemi. The CAV4109 variant specifically denotes the automotive-grade version, distinguished by its extended temperature range compared to commercial counterparts. It shares core electrical characteristics with the standard CAT4109 but adheres to stricter automotive quality standards.

Replacement Considerations

The CAT4109 serves as the commercial equivalent with identical functionality but a narrower operating temperature range. Verify if the extended temperature capability is strictly necessary for your application environment before substituting.