CAT3649HV3-GT2

Overview

The CAT3649HV3-GT2 is a six-channel LED driver IC manufactured by onsemi, designed for backlight applications. It utilizes a charge pump topology to regulate output current at 25 mA per channel with a maximum output voltage of 7 V. The device operates within a supply voltage range of 2.4 V to 5.5 V and functions at a switching frequency of 1.3 MHz. It supports both analog and PWM dimming methods. The component is housed in a 16-TQFN (3x3 mm) package with an exposed pad and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates six independent constant-current channels for uniform LED illumination
• Supports combined analog and pulse-width modulation dimming control
• Includes internal protection mechanisms against short circuits and thermal overload

Applications

• LCD panel backlighting systems
• Mobile device display drivers
• Portable electronic equipment lighting

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration required for automated assembly processes. Confirm RoHS compliance status and material declarations prior to integration. Check for active Product Change Notices or End-of-Life announcements from onsemi to ensure long-term availability and manufacturing continuity for production runs.

Selection Notes

Select this component when a compact solution for driving multiple LEDs in series or parallel configurations is required. Ensure the input voltage range aligns with the system power supply. Verify that the required dimming interface matches the available analog or PWM control signals. Consider the thermal performance of the TQFN package relative to the PCB copper area for heat dissipation.

Part Context

This part belongs to the CAT3649 family of LED drivers from onsemi. It is specifically engineered for high-efficiency lighting in space-constrained portable devices. The HV3 suffix typically denotes specific manufacturing revisions or environmental compliance updates within the product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult onsemi technical support for qualified alternatives if this discontinued component is required for new designs.