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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR NO 24SSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：0V ~ 5.5V
- Current - Output / Channel：-
- Frequency：-
- Dimming：No
- Applications：LED Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：24-SSOP
- Grade：-
- Qualification：-
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Overview
The TLC6946DBQR is a Texas Instruments LED lighting driver IC featuring 16 constant-current outputs. It utilizes 16-bit Enhanced Serial Pulse Width Modulation (ES-PWM) for high-resolution dimming and supports up to 32 multiplexing channels. The device operates on a 3V to 5.5V supply with a maximum output voltage of 5.5V and an output current of 25mA per channel. Housed in a 24-pin SSOP package, it functions within a temperature range of -40°C to +85°C and supports a serial data input interface.
Feature Summary
- Provides 16-channel constant-current control with 16-bit ES-PWM resolution
- Supports up to 32 multiplexing configurations for complex LED arrays
- Integrates thermal shutdown protection for operational safety
Applications
- LED backlighting systems requiring high brightness uniformity
- General LED illumination drivers with multiplexed scanning
- Display driver circuits needing precise grayscale control
Procurement Notes
Verify the specific suffix DBQ confirms the SSOP-24 package variant when sourcing. Ensure the component meets RoHS compliance standards as indicated by manufacturer documentation. Confirm that the operating environment remains within the specified -40°C to +85°C range to maintain performance integrity. Cross-reference the datasheet for pinout compatibility during integration planning.
Selection Notes
Select this component for applications requiring high-resolution PWM dimming across multiple channels without external microcontrollers. The integrated thermal shutdown feature enhances reliability in enclosed spaces. Compare against the TLC6948 if different packaging or minor parameter variations are required. Ensure the system voltage aligns with the 3V to 5.5V input specification.
Part Context
This part belongs to the TLC6946 series of LED drivers from Texas Instruments. It is designed for high-performance lighting applications where precise current control and dimming accuracy are critical. The DBQR designation indicates the reel-packaged version of the SSOP-24 leaded component, facilitating automated surface-mount assembly processes.
Replacement Considerations
The TLC6948DBQR is a documented substitute within the same family, offering similar 16-channel functionality. Verify package compatibility and specific electrical tolerances before substitution. No other direct cross-model replacements are confirmed in public documentation.
