TLC5947RHBRG4

Product Overview

Category

The TLC5947RHBRG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for driving LEDs (Light Emitting Diodes) in various applications.

Characteristics

• The TLC5947RHBRG4 is a 24-channel, constant-current sink driver.
• It has a grayscale PWM (Pulse Width Modulation) control capability.
• This IC operates with a supply voltage range of 3V to 5.5V.
• It offers a high output current capability of up to 60mA per channel.
• The TLC5947RHBRG4 supports daisy-chaining multiple devices for expanded LED control.

Package and Quantity

The TLC5947RHBRG4 is available in a 32-pin VQFN (Very Thin Quad Flat No-Lead) package. It is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Output Current per Channel: Up to 60mA
• Number of Channels: 24
• Grayscale Control: 4096 steps
• Communication Interface: Serial (SPI)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TLC5947RHBRG4 features a 32-pin VQFN package with the following pin configuration:

1. OUT0
2. OUT1
3. OUT2
4. OUT3
5. OUT4
6. OUT5
7. OUT6
8. OUT7
9. OUT8
10. OUT9
11. OUT10
12. OUT11
13. OUT12
14. OUT13
15. OUT14
16. OUT15
17. OUT16
18. OUT17
19. OUT18
20. OUT19
21. OUT20
22. OUT21
23. OUT22
24. OUT23
25. GND
26. VCC
27. SOUT
28. SIN
29. SCLK
30. XLAT
31. BLANK
32. GSCLK

Functional Features

• Constant-current sink driver for LED control.
• 12-bit grayscale PWM control for precise brightness adjustment.
• Serial communication interface (SPI) for easy integration with microcontrollers.
• Daisy-chainable for controlling multiple TLC5947RHBRG4 devices.
• Internal thermal shutdown protection.

Advantages and Disadvantages

Advantages

• High output current capability allows driving of high-power LEDs.
• Precise grayscale control enables smooth dimming and color mixing.
• Daisy-chaining feature simplifies LED control in large-scale applications.
• Internal thermal shutdown protects the device from overheating.

Disadvantages

• Limited to driving LEDs and not suitable for other types of loads.
• Requires external components for proper operation.
• Higher cost compared to simpler LED driver solutions.

Working Principles

The TLC5947RHBRG4 operates by receiving control signals through the SPI interface from a microcontroller or other control circuitry. It uses these signals to adjust the current flowing through each channel, thereby controlling the brightness of connected LEDs. The grayscale PWM control allows for smooth dimming and color mixing effects. The device can be daisy-chained to control multiple TLC5947RHBRG4 ICs, expanding the number of controllable LEDs.

Detailed Application Field Plans

The TLC5947RHBRG4 finds application in various fields, including:

1. Lighting: Used in architectural lighting, decorative lighting, and stage lighting systems.
2. Display Panels: Suitable for LED matrix displays, signage, and scoreboards.
3. Automotive: Used for interior and exterior lighting applications in vehicles.
4. Gaming: Integrated into gaming machines and consoles for dynamic lighting effects.
5. Consumer Electronics: Found in smart home devices, wearable technology, and entertainment systems.

Alternative Models

1. TLC5940: 16-channel LED driver with similar features but a lower channel count.
2. MAX7219: LED driver and display controller with serial interface.
3. TLC59711: 12-channel LED driver with integrated current sense amplifiers.

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

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