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Product Detailed Parameters
- Description：IC LED DRV LIN MULT-STEP 8UDFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：2.4V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：20mA
- Frequency：-
- Dimming：Multi-Step
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-UFDFN Exposed Pad
- Supplier Device Package：8-UDFN (2x2)
- Grade：-
- Qualification：-
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Overview
The CAT4004AHU2-GT3B is a four-channel LED driver IC from onsemi, designed for portable applications. It features adjustable output current up to 40 mA and supports both boost and buck topologies. The device operates within a supply voltage range of 2.4 V to 5.5 V and functions reliably between -40°C and +85°C. Packaged in an 8-lead UDFN format, it integrates EZDim interface for digital dimming control.
Feature Summary
- Integrates EZDim logic input for enabling the device and providing a digital interface for linear dimming control across multiple levels.
- Provides four matched low-dropout current sinks capable of handling various LED forward voltages while maintaining precise current matching.
- Supports flexible power configurations through integrated boost and buck topology options for efficient LED driving.
Applications
- Portable electronic device backlighting
- Mobile phone display illumination
- Digital camera flash systems
Procurement Notes
Verify the specific suffix GT3 against official onsemi documentation to confirm tape-and-reel packaging specifications. Ensure the UDFN-8 package dimensions align with your PCB footprint requirements. Confirm RoHS compliance status directly from the manufacturer's latest datasheet revision before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring four independently controlled LED channels with tight current matching. It is suitable for battery-powered devices due to its wide input voltage range and low dropout characteristics. Consider the UDFN-8 package size constraints and thermal dissipation needs relative to the maximum 40 mA per channel output capability.
Part Context
This part belongs to the CAT4004A series of LED drivers, which are optimized for portable electronics. The series emphasizes compact form factors and high efficiency. The CAT4004AHU2-GT3B specifically offers four channels, distinguishing it from lower-channel variants like the CAT4002 or CAT4003 within the same family.
Replacement Considerations
Check for CAT4004BHU2-GT3 as a potential variant within the broader CAT4004 family. Verify pin compatibility and electrical parameters against official substitution lists provided by onsemi before implementing any cross-model replacements.
