LED2472G:24-Channels LED driver with LED error detection and gain control
The LED2472G is a monolithic, low voltage, low current power 24-bit shift register designed for LED panel displays with particular features oriented to indoor and outdoor LED screen billboards. The LED2472G guarantees 20 V of output driving capability, allowing several LEDs to be connected in series. The device is configured in 3 groups (red, green and blue) of 8 independently-controlled channels. The LED current can be separately regulated for each color within the range from 4 mA to 72 mA. This range is divided into two sub-ranges and the current can be adjusted within each range in 64 steps of resolution (6 bits per color). A single external resistor is required. All the controls and the shift register data are accessible via serial interface. A single 24-bit configuration register is used to choose features and settings to fit the application. The LED failure detection circuit checks 3 different conditions that can occur at the output line: short to GND, short to LED power supply rail or open channel. The auto power shutdown and auto power-on feature (selectable) allows the device to save power without any external intervention. Thermal management includes overtemperature flag and the output thermal shutdown (170 °C). The high clock frequency of up to 30 MHz makes the device suitable for high data rate transmission. A selectable gradual output delay reduces the inrush current. The supply voltage ranges from 3 V and 5.5 V.
Key Features
- 24 constant current output channels
- Output current: 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 (both open and shorted LED)
- Programmable shorted LED detection thresholds
- Auto power-saving / auto wakeup
- Gradual output delay (selectable)
- Supply voltage: 3 V to 5.5 V
- Thermal shutdown and thermal flag
- Up to 30 MHz CLK 4 wires interface
- 20 V current generators rated voltage
产品规格
手册
解决方案评估工具
型号 | 制造商 | Description |
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STEVAL-ILL015V2 | | HB LED driver with diagnostics based on the LED2472G and STM32 |
STEVAL-ILL015V3 | ST | HB LED driver with diagnostic based on the LED2472G |
样片和购买
型号 | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
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LED2472GQTR | 1000 | 0.943 | VFQFPN 40 5x5x1.0 | Tape And Reel | - | - | NEC | EAR99 | CHINA |
LED2472GBTR | 1000 | 1.001 | TQFP 48 7x7x1.0 | Tape And Reel | - | - | NEC | EAR99 | MALAYSIA |
质量和可靠性
型号 | Package | Grade | RoHS Compliance Grade | Material Declaration** |
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LED2472GQTR | VFQFPN 40 5x5x1.0 | Industrial | Ecopack2 | |
LED2472GBTR | TQFP 48 7x7x1.0 | Industrial | Ecopack2 | |