CAT3626HV4-GT2

Overview

The CAT3626HV4-GT2 is a six-channel LED lighting driver IC manufactured by onsemi, utilizing a charge pump topology. It operates within an input voltage range of 3 V to 5.5 V and delivers up to 32 mA output current per channel. The device features I2C control interface and supports PWM dimming. It functions at a switching frequency of 1.2 MHz with a maximum output voltage of 7 V. Designed for surface mount installation in a TQFN-16 package, it ensures reliable performance across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Integrates six independent constant-current channels for multi-zone LED applications
• Utilizes internal charge pump circuitry to drive LEDs without external inductors
• Supports digital control via I2C serial interface for configuration and dimming
• Includes integrated protection mechanisms against thermal overload and open-load conditions

Applications

• LCD backlight illumination for mobile devices
• LED indicator arrays in consumer electronics
• Segmented display drivers in portable instruments
• General-purpose low-power LED lighting systems

Procurement Notes

Verify the specific suffix GT2 confirms the tape-and-reel packaging format when sourcing components. Confirm RoHS compliance status through official manufacturer documentation or certified distributor declarations prior to integration into regulated assemblies. Ensure the ordering part number matches the exact pinout and electrical specifications required by the design schematic to avoid compatibility issues during manufacturing.

Selection Notes

Select this component when designing circuits requiring multiple independently controlled LED channels driven by a single controller. The charge pump architecture is suitable for battery-powered applications where inductor-based boost converters are undesirable due to size constraints. Verify that the required LED forward voltage does not exceed the 7 V output capability and that the total current demand remains within the 32 mA per channel limit specified in the datasheet.

Part Context

This device belongs to the CAT3626 series of LED drivers from onsemi, which focuses on compact, high-efficiency solutions for portable electronics. The series is characterized by its ability to drive multiple LEDs from a single supply rail using capacitive charge pumping technology. This specific variant integrates advanced digital control features to simplify system design and reduce external component count compared to earlier generations.

Replacement Considerations

Consult official cross-reference lists for verified substitutes such as other variants within the CAT3626 family if pin compatibility is required. No direct public substitute part numbers are confirmed in available documentation.