Overview
The LED2472G, produced by STMicroelectronics, is a monolithic, low-voltage, low-current power 24-bit shift register designed specifically for LED panel displays. This device is particularly suited for indoor and outdoor LED screen billboards, offering advanced features such as error detection, gain control, and thermal management. The LED2472G provides 24 constant current output channels, divided into three groups of eight independently controlled channels for red, green, and blue LEDs. This allows for precise control over the current for each color within the range of 4 mA to 72 mA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3 V to 5.5 V | V |
| Output Current Range | 4 mA to 72 mA | mA |
| Number of Output Channels | 24 | - |
| Channel Configuration | 8 x 3 (RGB) | - |
| Maximum Output Voltage | 20 V | V |
| Operative Temperature Range | -40°C to +85°C | °C |
| Thermal Junction Temperature Range | -40°C to +125°C | °C |
| Clock Frequency | Up to 30 MHz | MHz |
| Package Options | TQFP48-EP, MLPQ40-EP | - |
Key Features
- 24 constant current output channels with 8 x 3 independently controlled channels for RGB LEDs.
- Current programmable through an external resistor with 7-bit global current gain adjustment in two ranges.
- Error detection mode for both open and shorted LEDs with programmable shorted LED detection thresholds.
- Auto power-saving and auto wakeup features.
- Gradual output delay (selectable) to reduce inrush current.
- Thermal shutdown and thermal flag for overtemperature protection.
- High clock frequency of up to 30 MHz for high data rate transmission.
- Serial interface for all controls and shift register data.
Applications
- Full color large displays.
- LED signage.
- LED screens for indoor and outdoor billboards.
Q & A
- What is the LED2472G used for?
The LED2472G is used for driving LEDs in display applications such as full color large displays, LED signage, and LED screens for indoor and outdoor billboards. - How many output channels does the LED2472G have?
The LED2472G has 24 constant current output channels, divided into 8 channels for each of the red, green, and blue colors. - What is the range of the output current for the LED2472G?
The output current range is from 4 mA to 72 mA. - What is the supply voltage range for the LED2472G?
The supply voltage range is from 3 V to 5.5 V. - Does the LED2472G have thermal protection features?
Yes, it includes thermal shutdown and a thermal flag for overtemperature protection. - What is the maximum clock frequency of the LED2472G?
The maximum clock frequency is up to 30 MHz. - How does the LED2472G handle LED failures?
The device includes an error detection circuit that checks for short to GND, short to LED power supply rail, or open channel conditions. - Can the LED2472G be configured for power saving?
Yes, it has auto power-saving and auto wakeup features. - What are the package options for the LED2472G?
The package options include TQFP48-EP and MLPQ40-EP. - How is the current adjusted in the LED2472G?
The current can be adjusted using an external resistor and a 7-bit global current gain adjustment.
