STMicroelectronics ALED1642GW LED Display Driver
STMicroelectronics ALED1642GW LED Display Driver is a monolithic, low voltage, low current power 16-bit shift register designed for LED panel displays. The ALED1642GW guarantees 20V output driving capability allowing the user to connect several LEDs in series. In the output stage, sixteen regulated current sources provide from 3mA to 40mA constant current to drive the LEDs. The current is programmed through an external resistor and can be adjusted by 7-bit current gain register in two subranges. The brightness can be adjusted separately for each channel through a 12/16-bit grayscale control. A programmable turn-on and turn-off time (four different values are available) improves the system low noise generation performances.
The STMicroelectronics ALED1642GW LED Display Driver is offered in a TSSOP-24 package with an exposed pad for enhanced thermal performance.
Features
- 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
Applications
- Full color/monochrome displays
- Dashboard (backlighting led indicators)
- Automotive interior lighting
Development Tools
STMicroelectronics STEVAL-ILL073V1 Evaluation Board
ALED1642GW independent PWM LED driver controlled through an STM8A microcontroller SPI interface.
ALED1642GW Block Diagram
Typical Application Circuit
Complete Your Design
STMicroelectronics 標準產品
可簡易替換的多樣化產品，適合廣泛使用的通用類比IC、獨立元件及序列EEPROM。
發佈日期: 2014-04-01
| 更新日期: 2022-03-11