TLC5928PWR

Overview

Category: Integrated Circuit (IC)

Use: LED Driver

Characteristics: - High current sink capability - Serial data input - Constant current output - Daisy-chainable - Wide operating voltage range

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The TLC5928PWR is an integrated circuit that serves as a LED driver. It provides high current sink capability and constant current output for driving LEDs in various applications.

Packaging/Quantity: The TLC5928PWR is available in a TSSOP package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Output Current per Channel: Up to 120mA
• Number of Channels: 16
• Serial Data Interface: SPI (Serial Peripheral Interface)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TLC5928PWR has a total of 24 pins, which are assigned as follows:

1. GND (Ground)
2. OUT0 (Channel 0 Output)
3. OUT1 (Channel 1 Output)
4. OUT2 (Channel 2 Output)
5. OUT3 (Channel 3 Output)
6. OUT4 (Channel 4 Output)
7. OUT5 (Channel 5 Output)
8. OUT6 (Channel 6 Output)
9. OUT7 (Channel 7 Output)
10. OUT8 (Channel 8 Output)
11. OUT9 (Channel 9 Output)
12. OUT10 (Channel 10 Output)
13. OUT11 (Channel 11 Output)
14. OUT12 (Channel 12 Output)
15. OUT13 (Channel 13 Output)
16. OUT14 (Channel 14 Output)
17. OUT15 (Channel 15 Output)
18. VCC (Supply Voltage)
19. SCLK (Serial Clock Input)
20. SIN (Serial Data Input)
21. BLANK (Blanking Control Input)
22. XLAT (Latch Control Input)
23. GSCLK (Global Brightness Clock Input)
24. GND (Ground)

Functional Features

• High current sink capability allows driving high-power LEDs.
• Serial data input enables easy control and configuration.
• Constant current output ensures consistent brightness across LEDs.
• Daisy-chainable feature simplifies the connection of multiple TLC5928PWR devices.
• Wide operating voltage range provides flexibility in various applications.

Advantages and Disadvantages

Advantages: - High current sink capability for driving high-power LEDs. - Serial data interface allows easy control and configuration. - Constant current output ensures consistent brightness. - Daisy-chainable feature simplifies system design. - Wide operating voltage range provides flexibility.

Disadvantages: - Limited number of channels (16) may not be sufficient for large-scale LED applications. - Requires an external clock signal for global brightness control.

Working Principles

The TLC5928PWR is designed to drive LEDs with a constant current output. It receives serial data input through the SPI interface, which controls the brightness levels of individual LED channels. The device features a high current sink capability, allowing it to handle high-power LEDs effectively. The TLC5928PWR also supports daisy-chaining, enabling multiple devices to be connected in series for driving larger LED arrays.

Detailed Application Field Plans

The TLC5928PWR is commonly used in various applications that require LED driving, such as: - LED displays - Automotive lighting - Backlighting for LCD panels - Decorative lighting - Signage and advertising displays

Alternative Models

Here are some alternative models that can be considered as alternatives to the TLC5928PWR: - TLC5940: 16-channel LED driver with grayscale control capability. - MAX7219: LED display driver with serial interface and multiplexing features. - TLC5973: 12-channel constant current LED driver with integrated PWM control.

These alternative models offer different features and specifications, providing options for specific application requirements.

In conclusion, the TLC5928PWR is a versatile LED driver IC that offers high current sink capability, constant current output, and easy control through a serial data interface. It finds applications in various fields, including LED displays, automotive lighting, and backlighting. While it has some limitations, such as the limited number of channels, there are alternative models available to suit specific needs.