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Product Detailed Parameters
- Description：IC LED DRVR LINEAR 35MA 24TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：17V
- Current - Output / Channel：35mA
- Frequency：35MHz
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：24-TSSOP
- Grade：-
- Qualification：-
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Overview
The TLC5928PWR is a 16-channel constant current LED driver IC manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and delivers an output current of 35 mA per channel. The device utilizes a boost topology with a maximum output voltage of 17 V and supports data transfer rates up to 35 MHz. Packaged in a 24-pin HTSSOP, it functions across an industrial temperature range of -40°C to +85°C.
Feature Summary
- Provides 16 independent constant current channels for uniform LED illumination control.
- Integrates LED open detection (LOD) circuitry to identify broken or disconnected LEDs.
- Features ON/OFF control capability via serial data input into internal registers.
Applications
- LED backlighting systems requiring precise current regulation
- General-purpose LED indicator arrays
- Portable electronic devices utilizing low-voltage power supplies
Procurement Notes
Verify the specific package variant against design requirements, as the TLC5928 series includes multiple form factors such as TSSOP, SSOP, and VQFN. Confirm that the HTSSOP-24 package aligns with PCB footprint constraints. Ensure compatibility with the system's serial interface timing specifications before finalizing procurement.
Selection Notes
Select this component when a high channel count is required without external multiplexing. The fixed 35 mA output current suits standard indicator LEDs. Consider thermal dissipation limits given the power rating. Verify that the single external resistor setting meets the desired brightness levels across the full operating temperature range.
Part Context
This part belongs to the TLC5928 family of LED drivers from Texas Instruments. The family shares core functionality but varies in physical packaging options including HTSSOP, TSSOP, SSOP, and VQFN. These variants allow designers to choose the most suitable mechanical profile for different board space and assembly requirements while maintaining identical electrical performance characteristics.
Replacement Considerations
TLC5928PWPR serves as a reel-pack equivalent. Other package variants like TLC5928RGER or TLC5928DBQR offer pin-compatible alternatives with different footprints. Cross-reference datasheets to ensure mechanical fit and verify that any substitute maintains the same 35 mA constant current specification.
