STMicroelectronics ALED1642GW LED 显示驱动器
STMicroelectronics ALED1642GW LED 显示驱动器是单片低压低电流 16 位移位寄存器，用于 LED 面板显示屏。ALED1642GW 可确保 20V 的输出驱动能力，用户可以以串联方式连接若干个 LED。在输出阶段，16 个稳压电流源提供从 3mA 到 40mA 的恒定电流以驱动 LED。电流通过外部电阻器进行设定，并可以由一个 7 位电流增益寄存器在两个子范围间进行调整。各通道亮度可通过 12/16 位灰阶控制分别进行调整。可编程的开关时间（有四个不同值可用）改善了系统低噪声发生性能。
The STMicroelectronics ALED1642GW LED Display Driver is offered in a TSSOP-24 package with an exposed pad for enhanced thermal performance.
特性
- 16 constant current output channels
- 3mA to 40mA output current
- Current programmable through external resistor
- 7-bit global current gain adjustment in two ranges
- 12/16-bit PWM grayscale brightness control
- Programmable output turn-on/off time
- Error detection mode (both open and shorted-LED)
- Programmable shorted-LED detection thresholds
- Auto power saving/auto-wakeup
- Selectable SDO synchronization on the CLK falling edge
- Gradual output delay (selectable)
- 3V to 5.5V supply voltage
- Thermal shutdown and overtemperature alert
- Up to 30MHz 4-wires interface
- 20V current generator rated voltage
应用
- Full color/monochrome displays
- Dashboard (backlighting led indicators)
- Automotive interior lighting
Development Tools
STMicroelectronics STEVAL-ILL073V1评估板
通过STM8A微控制器SPI接口控制的ALED1642GW独立PWM LED驱动器。
ALED1642GW Block Diagram
Typical Application Circuit
Complete Your Design
STMicroelectronics 标准产品
各种可直接替换器件，适用于通用模拟IC、分立元件和串行EEPROM。
发布日期: 2014-04-01
| 更新日期: 2022-03-11