• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-Ion or Li-Polymer Battery, and discharge it down to 2.5V or lower. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA.

特性

• Up to 96% Efficiency
• 800-mA Output Current at 3.3V in Step Down Mode (VIN = 3.6V to 5.5V)
• Up to 500-mA Output Current at 3.3V in Boost Mode (VIN > 2.4V)
• Automatic Transition Between Step Down and Boost Mode
• Device Quiescent Current less than 50µA
• Input Voltage Range: 1.8V to 5.5V
• Fixed and Adjustable Output Voltage Options from 1.2V to 5.5V
• Power Save Mode for Improved Efficiency at Low Output Power
• Forced Fixed Frequency Operation and Synchronization Possible
• Load Disconnect During Shutdown
• Over-Temperature Protection
• Available in Small 2,5-mm × 2,5-mm, QFN-10 Package
• APPLICATIONS
  • All Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products
  • Portable Audio Players
  • PDAs
  • Cellular Phones
  • Personal Medical Products
  • White LEDs