Overview
The TLC5920DLR, produced by Texas Instruments, is a versatile LED driver integrated circuit. It combines a 16-channel shift register, a data latch, and constant current circuitry into a single chip. This device is designed to drive LED arrays efficiently, supporting both monochrome and two-color LED displays. The TLC5920 can drive a 16x8 monochrome LED array with a single chip and a 16x16 two-color LED array with two chips.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 48-Pin SSOP (DL) | |
| Operating Temperature Range | -20°C to 85°C | |
| Drive Capability - Segment | 30 mA × 16 Bits | |
| Drive Capability - Common | 640 mA | |
| Constant Current Output | 3 mA to 30 mA (set by external resistor) | |
| Constant Current Accuracy | ±6% (maximum error between bits) | |
| Data Input | Clock synchronized serial input | |
| LED Type | Applied cathode common | |
| Logic Power Supply Voltage | 4.5 V to 5.5 V | |
| LED Power Supply Voltage | 4.5 V to 5.5 V | |
| Operating Frequency | 10 MHz |
Key Features
- Integrated Circuitry: Combines a 16-channel shift register, data latch, and constant current circuitry.
- Drive Capability: Supports up to 30 mA per segment and 640 mA for common drivers.
- Current Control: Constant current output adjustable via an external resistor.
- Accuracy: ±6% maximum error between bits for constant current.
- Data Input: Clock synchronized serial input for data transfer.
- LED Support: Designed for applied cathode common LED arrays.
- Power Supply: Logic and LED power supply voltages range from 4.5 V to 5.5 V.
- Operating Frequency: Up to 10 MHz operating frequency.
- Temperature Range: Operating free-air temperature range from -20°C to 85°C.
Applications
- LED Displays: Ideal for driving monochrome and two-color LED arrays in various display applications.
- Signage and Advertising: Suitable for digital signage, billboards, and advertising displays.
- Industrial Control Panels: Can be used in control panels and indicators for industrial equipment.
- Consumer Electronics: Applicable in consumer electronics such as TVs, monitors, and other display devices.
Q & A
- What is the TLC5920DLR used for?
The TLC5920DLR is used to drive LED arrays, particularly in applications requiring a high number of LEDs, such as display screens and signage.
- How many LEDs can a single TLC5920DLR drive?
A single TLC5920DLR can drive a 16x8 monochrome LED array or half of a 16x16 two-color LED array.
- What is the maximum current output per segment?
The maximum current output per segment is 30 mA.
- How is the constant current output controlled?
The constant current output is controlled using an external resistor.
- What is the operating frequency of the TLC5920DLR?
The operating frequency is up to 10 MHz.
- What is the operating temperature range of the TLC5920DLR?
The operating temperature range is from -20°C to 85°C.
- What type of LED arrays does the TLC5920DLR support?
The TLC5920DLR supports applied cathode common LED arrays.
- What is the logic power supply voltage range for the TLC5920DLR?
The logic power supply voltage range is from 4.5 V to 5.5 V.
- How many pins does the TLC5920DLR have?
The TLC5920DLR has 48 pins in an SSOP package.
- What is the maximum total power dissipation for the TLC5920DLR?
The maximum total power dissipation is 1500 mW.
