TLC5921DAPR

Product Overview

Category

TLC5921DAPR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for driving LED displays and lighting applications.

Characteristics

• The TLC5921DAPR is a 16-channel constant current sink driver.
• It operates with a wide supply voltage range of 3V to 5.5V.
• The device can sink up to 120mA per channel, making it suitable for high-power LED applications.
• It features a serial interface that allows easy control and daisy-chaining of multiple devices.
• The TLC5921DAPR has built-in thermal shutdown protection to prevent overheating.

Package

The TLC5921DAPR is available in a small outline package (SOP) with 20 pins.

Essence

The essence of the TLC5921DAPR lies in its ability to efficiently drive LED displays and lighting systems by providing constant current sinking capabilities.

Packaging/Quantity

The TLC5921DAPR is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Number of Channels: 16
• Maximum Current per Channel: 120mA
• Serial Interface: Yes
• Thermal Shutdown Protection: Yes
• Package Type: SOP-20

Detailed Pin Configuration

The TLC5921DAPR has a total of 20 pins. Here is the detailed pin configuration:

1. GND - Ground
2. OUT0 - Output Channel 0
3. OUT1 - Output Channel 1
4. OUT2 - Output Channel 2
5. OUT3 - Output Channel 3
6. OUT4 - Output Channel 4
7. OUT5 - Output Channel 5
8. OUT6 - Output Channel 6
9. OUT7 - Output Channel 7
10. OUT8 - Output Channel 8
11. OUT9 - Output Channel 9
12. OUT10 - Output Channel 10
13. OUT11 - Output Channel 11
14. OUT12 - Output Channel 12
15. OUT13 - Output Channel 13
16. OUT14 - Output Channel 14
17. OUT15 - Output Channel 15
18. VCC - Supply Voltage
19. SDA - Serial Data Input
20. SCL - Serial Clock Input

Functional Features

• Constant current sinking for driving LED displays and lighting systems.
• Serial interface for easy control and daisy-chaining of multiple devices.
• Wide supply voltage range allows compatibility with various power sources.
• Built-in thermal shutdown protection prevents overheating and ensures device safety.

Advantages and Disadvantages

Advantages

• High current sinking capability enables driving of high-power LEDs.
• Serial interface simplifies control and integration into larger systems.
• Wide supply voltage range provides flexibility in power supply selection.
• Thermal shutdown protection enhances reliability and safety.

Disadvantages

• Limited to constant current sinking applications, not suitable for sourcing current.
• Requires external components for complete LED driving solutions.

Working Principles

The TLC5921DAPR operates by receiving serial data and clock signals through its SDA and SCL pins. The received data is then decoded and used to control the current sinking of each output channel. By adjusting the current sinking levels, the IC can drive LED displays and lighting systems with precise control.

Detailed Application Field Plans

The TLC5921DAPR finds extensive use in various applications, including: - LED matrix displays - LED signage - Architectural lighting - Automotive lighting - Decorative lighting - Stage lighting

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the TLC5921DAPR: - MAX7219 - TLC5940 - IS31FL3731 - AS1130 - HT16K33

These alternatives provide comparable features and can be considered based on specific application requirements.

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