• - 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 TPS51020 is a multi-function dual-synchronous step-down controller for notebook system power. The part is specifically designed for high performance, high efficiency applications where the loss associated with a current sense resistor is unacceptable. The TPS51020 utilizes feed forward voltage mode control to attain high efficiency without sacrificing line response. Efficiency at light load conditions can be maintained high as well by incorporating autoskip operation. A selectable, Suspend to RAM (STR) supported, DDR option provides a one chip solution for all switching applications from 5-V/3.3-V supply to a complete DDR termination solution.

特性

• Wide Input Voltage Range: 4.5-V to 28-V
• Selectable Dual and DDR Modes
• Selectable Fixed Frequency Voltage Mode
• Advanced Power Good Logic Monitors both Channels
• Selectable Autoskip Mode
• Integrated Boot Strap Diodes
• 180° Phase Shift Between Channels
• Integrated 5-V, 60-mA Regulator
• Input Feedforward Control
• 1% Internal 0.85-V Reference
• R_DS(on) Overcurrent Detection (4200 ppm/°C)
• Integrated OVP, UVP and Power Good Timers
• 30-pin TSSOP Package
• APPLICATIONS
  • Notebook Computers System Bus and I/O
  • DDR I or DDR II Termination