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Product Detailed Parameters
- Description：IC LED DRV LIN MULT-STP TSOT23-6
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：3
- Voltage - Supply (Min)：2.4V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：25mA
- Frequency：-
- Dimming：Multi-Step
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6 Thin, TSOT-23-6
- Supplier Device Package：TSOT-23-6
- Grade：-
- Qualification：-
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Overview
The CAT4003BTD-GT3 is a programmable LED driver from onsemi featuring three matched low-dropout current sinks. It operates within a supply voltage range of 2.4 V to 5.5 V and supports an output current up to 40 mA. The device utilizes EZDim logic inputs for digital dimming control, enabling 32 levels of linear brightness adjustment. It includes independent control loops for each channel to maintain precise current matching across varying LED forward voltages. The component is housed in a TSOT-23 package.
Feature Summary
- Provides three matched low-dropout current sinks for consistent LED brightness
- Supports 32-level linear digital dimming via EZDim logic interface
- Eliminates the need for external sense resistors with internal current setting
Applications
- Portable electronic devices powered by lithium-ion batteries
- Mobile phone screen backlighting systems
- Digital camera flash and illumination circuits
Procurement Notes
Verify the specific ordering suffix to confirm the package type and tape-and-reel configuration. Confirm RoHS compliance status as indicated in the datasheet. Check for End-of-Life notifications or discontinuance alerts associated with this specific part number before finalizing procurement plans.
Selection Notes
Select this component when designing portable LED applications requiring precise current matching without external resistors. Ensure the design accommodates the 2.4 V to 5.5 V input range and utilizes the EZDim interface for digital control. Verify that the TSOT-23 package fits the available PCB space constraints.
Part Context
This part belongs to the CAT4003B series of programmable LED drivers. It is functionally similar to other variants like the CAT4004B but provides three channels instead of four. The family is designed for battery-powered portable electronics where low dropout voltage and high current accuracy are critical.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative models within the same product family based on channel count and package requirements.
