• - 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 TPS61040/41 is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual cell NiMH/NiCd or a single cell Li-Ion battery. The part can also be used to generate standard 3.3-V/5-V to 12-V power conversions.

The TPS61040/41 operates with a switching frequency up to 1 MHz. This allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin SON package, the TPS61040/41 gives a very small overall solution size. The TPS61040 has an internal 400 mA switch current limit, while the TPS61041 has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications.

特性

• 1.8-V to 6-V Input Voltage Range
• Adjustable Output Voltage Range up to 28 V
• 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
• Up to 1-MHz Switching Frequency
• 28-µA Typical No-Load Quiescent Current
• 1-µA Typical Shutdown Current
• Internal Soft Start
• Available in SOT23-5, TSOT23-5,
  and 2 × 2 × 0.8-mm SON Packages
• APPLICATIONS
  • LCD Bias Supply
  • White-LED Supply for LCD Backlights
  • Digital Still Camera
  • PDAs, Organizers, and Handheld PCs
  • Cellular Phones
  • Internet Audio Player
  • Standard 3.3-V/5-V to 12-V Conversion