• - 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 TPS62240 device is a high efficiency synchronous step down dc-dc converter optimized for battery powered portable applications. It provides up to 300 mA output current from a single Li-Ion cell and is ideal to power portable applications like mobile phones and other portable equipment.

With an input voltage range of 2 V to 6 V, the device supports applications powered by Li-Ion batteries with extended voltage range, two- and three-cell alkaline, 3.3-V and 5-V input voltage rails.

The TPS62240 operates at 2.25 MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range.

The Power Save Mode is optimized for low output voltage ripple.

特性

• High Efficiency Step Down Converter
• Output Current up to 300 mA
• V_IN Range From 2 V to 6 V for Li-Ion Batteries With Extended Voltage Range
• 2.25 MHz Fixed Frequency Operation
• Power Save Mode at Light Load Currents
• Output Voltage Accuracy in PWM Mode ±1.5%
• Adjustable Output Voltage from 0.6 V to V_IN
• Typical 15 µA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Available in a TSOT23 and 2×2×0,8 mm SON
• Allows < 1 mm Solution Height
• APPLICATIONS
  • Bluetooth™ Headset
  • Cell Phones, Smart-phones
  • WLAN
  • PDAs, Pocket PCs
  • Low Power DSP Supply
  • Portable Media Players
  • Digital Cameras