• - 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 TPS61252 device provides a power supply solution for products powered by either a three-cell alkaline, NiCd or NiMH battery, or an one-cell Li-Ion or Li-polymer battery. The wide input voltage range is ideal to power portable applications like mobile phones or for computer peripherals. The device has a resistor programmable (R_ILIM) input current limit and is suitable for a wide variety of applications.

During light loads the device will automatically enter skip mode (PFM), which allows the converter to maintain the required output voltage, while only drawing 30 µA from the battery. This will allow maximum efficiency at lowest quiescent currents.

特性

• Resistor Programmable Input Current Limit
  • ±20% Current Accuracy at 500 mA over Full Temperature Range
  • Programmable from 100 mA up to 1500 mA
• Up to 92% Efficiency
• V_IN Range from 2.3 V to 6.0 V
• Power Good Indicates Appropriate Output Voltage Level
• Adjustable Output Voltage up to 6.5 V
• 100% Duty-Cycle Mode When V_IN > V_OUT
• Load Disconnect and Reverse Current Protection
• Short Circuit Protection
• Typical Operating Frequency 3.25 MHz
• Available in a 2×2-mm QFN-8 Package
• APPLICATIONS
  • USB Host Supplies from a Single Li-Ion Battery
  • Current Limited Applications
  • Li-Ion Applications
  • Audio Applications
  • RF-PA Buffer