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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 TLC6948DBQR is a 16-channel, 16-bit ES-PWM constant-current LED driver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and delivers an output current of 25 mA per channel. The device utilizes a boost topology and supports a maximum operating frequency of 33 MHz. It is housed in a 24-pin QSOP package with dimensions of 8.65 mm length. The component functions reliably across a temperature range of -40 °C to +85 °C.
Feature Summary
- Integrates 16 independent constant-current channels for precise LED control
- Utilizes 16-bit Enhanced Serial Pulse-Width Modulation (ES-PWM) for high-resolution dimming
- Incorporates internal boost topology to support higher voltage LED loads
- Features serial data input interface for efficient microcontroller connectivity
Applications
- LED lighting driver ICs
- General LED display systems
- Multiplexing applications requiring constant current sources
Procurement Notes
Verify the specific ordering suffix 'DBQR' against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the QSOP-24 package variant matches your PCB footprint requirements. Check for lead-free and RoHS compliance status as indicated in the latest datasheet revision. Ensure the selected component meets the required humidity sensitivity level for your assembly process.
Selection Notes
Select this component when designing circuits requiring 16-channel constant-current drive with high-resolution PWM dimming capabilities. The 25 mA output current suits standard LED arrays, while the 3 V to 5.5 V supply range offers flexibility for various logic levels. Consider the 33 MHz operating speed for high-refresh-rate display applications. The integrated boost topology simplifies design by handling voltage step-up internally.
Part Context
This part belongs to the TLC6948 series of LED drivers from Texas Instruments. It is designed for applications needing multiple constant-current outputs with digital control. The series typically includes variants with different channel counts or multiplexing capabilities. The DBQR suffix indicates a specific tape-and-reel packaging option suitable for automated surface-mount assembly processes.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official replacement guide or cross-reference tools for verified alternatives.
