AAT3369-1 High Efficiency 1x/1.5x Charge Pump

The AAT3369-1 is a low-noise, constant-frequency charge pump DC/DC converter that uses a dual-mode load switch (1x) and fractional (1.5x) conversion to maximize efficiency for white LED applications. The AAT3369-1 is capable of driving 4 white LEDs at a total of 80mA from a single 2.7V to 5.5V input. The current sinks may be operated individually or in parallel while driving higher-current LEDs. A low external parts count (two 1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) makes the AAT3369-1 ideal for small battery-powered applications. Skyworks' Simple Serial Control (S2Cwire) digital interface is used to enable, disable and set current to one of 32 levels for the LEDs. The AAT3369-1 is equipped with built-in short-circuit and over-temperature protection. The soft-start circuitry prevents excessive inrush current at start-up and mode transitions. The AAT3369-1 family is available in Pb-free, space-saving TSOPJW and TDFN33 packages, and operates over the -40°C to +85°C ambient temperature range.

技术特性
  • Dual-Mode (1x/1.5x) Charge Pump
  • Drives up to 4-Channel Backlight LEDs
  • 32-Level Programmable Backlight Current (linear, inverting)
  • Single-wire S2Cwire Control
  • Built-in Thermal Protection
  • Automatic Soft Start
  • -40°C to +85°C Temperature Range
  • TSOPJW-12 and TDFN33-12 Packages
订购信息 Ordering Information
  • AAT3369-1

 

应用领域 APPLICATION
  • Cellular and Smart Phones
  • Digital Still and Video Cameras
    • PDAs
  • Portable Devices
  • Portable Media Players
  • Other White LED Backlighting
AAT3369-1 典型应用

AAT3369-1 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
AAT3369-1 数据资料DataSheet下载:pdf Rev.V2 2 页