• - 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

As a member of the SWIFT™ family of dc/dc regulators, the TPS54872 low-input voltage high-output current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3.8 V; an internally set slow-start circuit to limit in-rush currents; and a status output to indicate valid operating conditions.

The TPS54872 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks.

特性

• Tracks Externally Applied Reference Voltage
• 30-m MOSFET Switches for High Efficiency at 8-A Continuous Output Source or Sink Current
• 6% to 90% V_I Output Tracking Range
• Wide PWM Frequency:
     Fixed 350 kHz or Adjustable 280 kHz to 700 kHz
• Load Protected by Peak Current Limit and Thermal Shutdown
• Integrated Solution Reduces Board Area and Total Cost
• APPLICATIONS
  • DDR Memory Termination Voltage
  • Active Termination of GTL and SSTL High-Speed Logic Families
  • DAC Controlled High Current Output Stage
  • Precision Point of Load Power Supply