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Product Detailed Parameters
- Description：IC LED DRV LIN ANALOG 56HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：48
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：10V
- Current - Output / Channel：30mA
- Frequency：-
- Dimming：Analog
- Applications：Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：56-PowerTFSOP (0.240", 6.10mm Width)
- Supplier Device Package：56-HTSSOP
- Grade：-
- Qualification：-
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Overview
The TLC5955DCA is a linear LED driver featuring 48 channels with 16-bit PWM resolution. It operates on a single supply voltage ranging from 3V to 5.5V, supporting output voltages up to 10V. Each channel delivers a constant current of 30mA. The device utilizes an HTSSOP-56 package and supports serial data input via standard SPI-compatible interfaces. It includes internal shift registers for data storage and latch functions.
Feature Summary
- Provides 48-channel constant current control with 16-bit grayscale resolution for precise brightness adjustment.
- Integrates a daisy-chain architecture allowing multiple devices to be controlled using minimal I/O pins.
- Features analog dimming capability to adjust overall LED intensity independently of PWM signals.
Applications
- Signage displays
- Large format LED matrices
- Architectural lighting systems
Procurement Notes
Verify the specific ordering suffix 'DCA' corresponds to the tube packaging configuration rather than tape-and-reel variants like 'DCAR'. Confirm that the manufacturer part number matches the exact pinout and thermal characteristics required for the target PCB layout. Ensure compatibility with the system's voltage levels before integration.
Selection Notes
Select this component when high-resolution grayscale control is required for large-scale LED arrays. It is suitable for designs needing independent current regulation per channel without external components. Consider the thermal performance of the HTSSOP package and ensure adequate board space for the 56-pin footprint compared to smaller QFN alternatives.
Part Context
This part belongs to the Texas Instruments TLC5955 family of LED drivers. It shares functional similarities with other members like the TLC5955RTQR but differs in package type and shipping configuration. The DCA variant specifically denotes the PowerTFSOP (HTSSOP) package style intended for through-hole or surface-mount assembly in tube quantities.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Alternative packages within the same family, such as the TLC5955RTQR, offer different form factors but require verification of mechanical fit and electrical equivalence.
