AAT3119 High Efficiency 2X Charge Pump

The AAT3119 is a charge-pump based, current-source white LED driver capable of driving one to four LEDs up to 30mA, each. It automatically switches between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current matching. The AAT3119 charge pump’s 1x mode (bypass mode) has very low resistance, allowing LED current regulation to be maintained with input supply voltage approaching the LED forward voltage. LED brightness is controlled using a universal PWM interface. The AAT3119 is available in a Pb-free, 2x2mm 10-lead SC70JW-10 package

技术特性
  • AAT3119: Four Outputs
  • AAT3119/14A: Six Outputs
  • 20mA Full-Scale Current
  • Simple Serial Control (S2Cwire) Interface
  • 32-Position Logarithmic Scale with Digital Control
  • Low Noise Constant Frequency Operation
  • 33% Less Input Current Than Doubler Charge Pump
  • High Accuracy Brightness Matching
  • Small Application Circuit
  • Regulated Output Current
  • Automatic Soft Start
  • VIN Range: 2.7V to 5.5V
  • No Inductors
  • 600kHz Switching Frequency
  • IQ <1μA in Shutdown
  • Temperature Range: -40°C to 85°C
  • 12-Pin TSOPJW Package (AAT3119)
  • 16-Pin QFN Package (AAT3119/14A)
应用领域 APPLICATION
  • Cellular Phones
  • Digital Cameras
  • Handheld Electronics
  • PDAs
  • White LED Backlighting
  • White LED Camera Flash
订购信息 Ordering Information
  • AAT3119
AAT3119 典型应用

AAT3119 典型应用

应用技术支持与电子电路设计开发资源下载 版本信息 大小
AAT3119 数据资料DataSheet下载:pdf Rev.V2 2 页