LED2472G数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

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.

特性 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

简介

LED2472G属于集成电路（IC）的LED驱动器。由制造生产的LED2472GLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。