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Product Detailed Parameters
- Description：LED DRIVER, 3-SEGMENT, PDSO6
- Series：*
- Mfr：onsemi
- Package：Bulk
- Type：-
- Topology：-
- Internal Switch(s)：-
- Number of Outputs：-
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：-
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The onsemi CAT4003BTS-T3 is a programmable LED driver IC featuring three matched low-dropout current sinks designed for driving LEDs. It operates within a supply voltage range of 2.4 V to 5.5 V and supports output currents up to 40 mA per channel. The device utilizes an EZDim logic interface for digital dimming control, eliminating the need for external sense resistors. Initially, the LED current is internally set to 25 mA upon power-up. The component is housed in a TSOT-23 package and is rated for operation across a temperature range of -40°C to +85°C.
Feature Summary
- Provides three independent matched current sinks for precise LED brightness consistency without external sense resistors.
- Integrates an EZDim digital interface enabling linear dimming control via logic inputs.
- Features low dropout voltage characteristics allowing direct drive from single-cell lithium-ion batteries.
Applications
- Portable electronic device backlighting
- Mobile phone display illumination
- Digital camera flash systems
Procurement Notes
Verify the specific suffix 'T3' against the official datasheet to confirm tape-and-reel packaging specifications and ensure compatibility with automated surface-mount assembly processes. Confirm that the TSOT-23 package variant aligns with the target PCB footprint requirements and thermal management constraints for the intended application environment.
Selection Notes
Select this component when designing circuits requiring three independently controlled LED channels with matched current accuracy. It is suitable for space-constrained portable applications where eliminating external sense resistors simplifies the bill of materials. Ensure the design accommodates the EZDim digital interface for required brightness control functionality.
Part Context
This part belongs to the CAT4003B series of programmable LED drivers from onsemi. The family includes variants with different channel counts and package options, such as the four-channel CAT4004B. These devices are engineered to provide efficient constant-current regulation for LED arrays in consumer electronics, emphasizing precision matching and simplified system integration.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with other CAT4003B variants or similar LED drivers only through official manufacturer substitution guides.
