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Product Detailed Parameters
- Description：IC LED DRV RGLT MULT-STEP 16TQFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：2.5V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：7V
- Current - Output / Channel：25mA
- Frequency：1MHz ~ 1.3MHz
- Dimming：Multi-Step
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-TQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The CAT3644HV3-GT2 is a quad-mode LED driver IC manufactured by onsemi, designed for high-efficiency lighting applications. It features four independent output channels capable of driving LEDs with precise current control. The device operates within an input voltage range of 3.6V to 5.5V and supports switching frequencies between 1MHz and 1.3MHz. Each channel delivers up to 25mA of output current. It functions across an extended temperature range from -40°C to +85°C and is housed in a compact TQFN-3 package.
Feature Summary
- Quad-mode architecture enabling flexible LED configuration options
- Four independent output channels for precise current regulation
- High switching frequency operation for reduced external component size
- Extended industrial temperature range support
Applications
- Portable electronic device backlighting
- General illumination LED arrays
- Signage and indicator lighting systems
Procurement Notes
Verify the specific suffix GT2 against the official datasheet to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status through the manufacturer's latest documentation. Check for any product discontinuance notices or end-of-life announcements prior to finalizing procurement plans.
Selection Notes
Select this component when a quad-mode LED driver with four independent channels is required. Ensure the application input voltage falls within the 3.6V to 5.5V range. Verify that the required output current per channel does not exceed 25mA. Consider the TQFN-3 package constraints for PCB layout and thermal management requirements.
Part Context
This part belongs to the CAT3644 series of LED drivers from onsemi. It is positioned as a solution for multi-segment LED driving where efficiency and compact form factor are critical. The series typically targets portable electronics and low-power lighting applications requiring multiple independently controlled LED strings.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official replacement guide or contact technical support for validated alternatives.
