TLC5948APWP

The TLC5948APWP is an integrated LED driver IC produced by Texas Instruments, a leading semiconductor manufacturer. This chip is designed to provide precise and adjustable current sinking capabilities for controlling LEDs in applications such as LED displays, signage, decorative lighting, and LED matrix panels.

Key Features:

• 16-Channel LED Driver: The TLC5948APWP supports up to 16 individual LED channels, allowing for the independent control of multiple LEDs or LED segments. Each channel can sink current from external LEDs, enabling flexible LED configurations.

• Constant-Current Sink: Each LED channel features a constant-current sink architecture, ensuring consistent LED brightness and color uniformity across different operating conditions and LED configurations. Constant-current drive helps prevent variations in LED brightness due to changes in forward voltage or temperature.

• PWM Control: The TLC5948APWP utilizes pulse-width modulation (PWM) control to adjust the brightness levels of connected LEDs. By modulating the duty cycle of the PWM signal, the chip can achieve precise dimming and color mixing of individual LEDs or LED groups.

• Gray-Scale Control: The LED driver supports gray-scale control, allowing for smooth brightness transitions and color gradients in LED-based displays and lighting systems. Gray-scale control enables the generation of a wide range of colors and visual effects.

• Daisy-Chainable: Multiple TLC5948APWP devices can be cascaded or daisy-chained together to expand the number of controllable LED channels in larger LED display or lighting applications. This feature simplifies system scalability and reduces the number of control signals required from the microcontroller.

• Serial Interface: The chip features a serial interface (SPI - Serial Peripheral Interface) for communication with an external microcontroller or host system. The SPI interface enables easy integration with a wide range of microcontroller platforms and simplifies LED control and programming.

• High-Precision Output: Texas Instruments designs the TLC5948APWP for high precision and accuracy in LED current sinking. This ensures consistent LED brightness levels and color reproduction, enhancing the visual quality and performance of LED-based applications.

• Thermal Shutdown Protection: The LED driver includes built-in thermal shutdown protection circuitry to prevent damage to the chip and connected LEDs in case of excessive temperature rise during operation. Thermal shutdown ensures device reliability and longevity in demanding environments.

Applications:

• LED Displays: Used in LED matrix displays, LED video walls, scoreboards, and large-scale signage applications for controlling individual LEDs or LED segments to display text, graphics, and animations.

• Architectural Lighting: Integrated into architectural lighting fixtures, decorative lighting installations, and accent lighting systems for creating dynamic lighting effects, color changing sequences, and mood lighting.

• Stage and Entertainment Lighting: Deployed in stage lighting fixtures, concert lighting rigs, and theatrical productions for dynamic lighting control, color mixing, and special effects lighting.

• Automotive Lighting: Utilized in automotive interior lighting, instrument clusters, and exterior lighting systems for controlling LED backlighting, ambient lighting, and decorative lighting features in vehicles.

• Gaming and Entertainment: Integrated into gaming peripherals, illuminated keyboards, gaming controllers, and LED-based gaming accessories for customizable backlighting effects and immersive gaming experiences.

• Consumer Electronics: Incorporated into consumer electronics products such as smart home devices, IoT gadgets, wearable technology, and digital signage for energy-efficient LED control and visual enhancement.