Overview
The LED2472GQTR, produced by STMicroelectronics, is a monolithic, low voltage, low current power 24-bit shift register specifically designed for LED panel displays. It is tailored for both indoor and outdoor LED screen billboards. The device features 24 constant current output channels, divided into three groups (red, green, and blue) of 8 independently-controlled channels. Each channel's current can be regulated within a range of 4 mA to 72 mA, adjustable in 64 steps of resolution. The LED2472GQTR also includes advanced features such as LED failure detection, auto power shutdown, and thermal management with overtemperature flags and output thermal shutdown at 170 °C.
Key Specifications
| Specification | Details |
|---|---|
| Output Channels | 24 constant current output channels |
| Output Current Range | 4 mA to 72 mA |
| Channel Configuration | 8 x 3 independently controlled channels (RGB) |
| Current Adjustment | Programmable through external resistor, 64 steps of resolution (6 bits per color) |
| Supply Voltage | 3 V to 5.5 V |
| Output Driving Capability | Up to 20 V |
| Package Type | VFQFPN 40 5x5x1.0 |
| Operating Temperature | -40 °C to 125 °C |
| Clock Frequency | Up to 30 MHz |
| Thermal Shutdown | 170 °C |
Key Features
- 24 constant current output channels
- Output current programmable from 4 mA to 72 mA
- 8 x 3 independently controlled channels (RGB)
- Current programmable through external resistor
- 7-bit global current gain adjustment in two ranges
- Error detection mode (open and shorted LED)
- Programmable shorted LED detection thresholds
- Auto power-saving / auto wakeup
- Gradual output delay (selectable)
- Thermal shutdown and thermal flag
- Up to 30 MHz clock frequency
Applications
The LED2472GQTR is primarily used in LED panel displays, including both indoor and outdoor LED screen billboards. Its features make it suitable for various display applications where precise control over LED current and error detection are crucial.
Q & A
- What is the LED2472GQTR used for? The LED2472GQTR is used for driving LED panel displays, particularly in indoor and outdoor LED screen billboards.
- How many output channels does the LED2472GQTR have? The LED2472GQTR has 24 constant current output channels.
- What is the range of output current for the LED2472GQTR? The output current range is from 4 mA to 72 mA.
- How are the channels configured in the LED2472GQTR? The channels are configured in 3 groups (red, green, and blue) of 8 independently-controlled channels each.
- What is the supply voltage range for the LED2472GQTR? The supply voltage range is from 3 V to 5.5 V.
- Does the LED2472GQTR have thermal management features? Yes, it includes overtemperature flags and output thermal shutdown at 170 °C.
- What is the maximum clock frequency of the LED2472GQTR? The maximum clock frequency is up to 30 MHz.
- Does the LED2472GQTR support error detection? Yes, it supports error detection for open and shorted LEDs.
- Can the output delay be adjusted on the LED2472GQTR? Yes, the output delay is selectable.
- What package types are available for the LED2472GQTR? The LED2472GQTR is available in VFQFPN 40 5x5x1.0 package.
