• - 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 TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host.

With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and is ideal for powering USB applications where USB compliance is required.

The TPS62750 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 TPS62751 operates in Forced PWM mode allowing use in applications that are noise sensitive. An output discharge allows the load to discharge in shutdown.

特性

• Efficiency > 90% at Nominal Operating Conditions
• Programmable Average Input Current Limits for USB Applications
  • 50mA to 300mA for Low Current Limit Range
  • 300mA to 1.3A for High Current Limit Range ±10% Current Accuracy
• Stable Output Voltage for Load Transients to Minimize Overshoot at Load Step Response
• Hot Plug and Reverse Current Protection
• Automatic PFM/PWM Mode transition (TPS62750)
• Forced PWM for Noise Sensitive Applications (TPS62751)
• V_IN Range From 2.9V to 6V
• Adjustable V_OUT From 0.8V to 0.85×VIN
• Softstart for Inrush Current Prevention
• 2.25 MHz Fixed Frequency Operation
• Short Cicruit and Thermal Shutdown Protection
• Available in a 2.5 × 2.5 10 pin SON Package
• APPLICATIONS
  • USB Wireless Modems
  • Portable USB peripherals
  • Handheld Computers