CAT32TDI-GT3

Overview

The CAT32TDI-GT3 is a single-channel LED lighting driver IC manufactured by onsemi, belonging to the CAT32 series. It utilizes a boost topology to drive up to four LEDs in series. The device operates within an input voltage range of 2 V to 7 V and delivers a regulated output current of 40 mA. It functions at a switching frequency of 1.2 MHz with adjustable output voltage capabilities. Key electrical specifications include a maximum supply current of 700 uA. The component is housed in a TSOT-23-6 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates PWM dimming control for precise brightness adjustment
• Includes open LED protection circuitry for enhanced reliability
• Supports high-frequency boost conversion for efficient power management

Applications

• LED backlighting systems
• Portable electronic device illumination
• General LED lighting modules

Procurement Notes

Verify end-of-life status before procurement as the manufacturer indicates this part is obsolete and will be discontinued. Confirm availability through authorized distributors or surplus channels. Ensure compatibility with existing PCB footprints and design requirements given the limited remaining supply. Check for alternative components if long-term production support is required.

Selection Notes

Select this component for applications requiring a compact, single-channel boost driver for series-connected LEDs. Consider the 40 mA output current limit and 2 V to 7 V input range when designing power stages. The TSOT-23-6 package suits space-constrained designs. Evaluate thermal performance within the specified operating temperature range and ensure adequate heat dissipation for continuous operation.

Part Context

This component is part of onsemi's CAT32 family of LED drivers. It serves as a specialized solution for low-power LED illumination tasks. The device integrates necessary power switches and control logic into a small footprint, reducing external component count compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the end-of-life status.