• - 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 TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, and DDR3 memory systems. It integrates a synchronous buck controller with a 3-A sink/source tracking linear regulator and buffered low noise reference. The TPS51116 offers the lowest total solution cost in systems where space is at a premium. The TPS51116 synchronous controller runs fixed 400kHz pseudo-constant frequency PWM with an adaptive on-time control that can be configured in D-CAP Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors. The 3-A sink/source LDO maintains fast transient response only requiring 20-µF (2 × 10 µF) of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses.

特性

• Synchronous Buck Controller (VDDQ)
  • Wide-Input Voltage Range: 3.0-V to 28-V
  • D-CAP™ Mode with 100-ns Load Step Response
  • Current Mode Option Supports Ceramic Output Capacitors
  • Supports Soft-Off in S4/S5 States
  • Current Sensing from R_DS(on) or Resistor
  • 2.5-V (DDR), 1.8-V (DDR2), Adjustable to 1.5-V (DDR3) or Output Range 0.75-V to 3.0-V
  • Equipped with Powergood, Overvoltage Protection and Undervoltage Protection
• 3-A LDO (VTT), Buffered Reference (VREF)
  • Capable to Sink and Source 3 A
  • LDO Input Available to Optimize Power Losses
  • Requires only 20-µF Ceramic Output Capacitor
  • Buffered Low Noise 10-mA VREF Output
  • Accuracy ±20 mV for both VREF and VTT
  • Supports High-Z in S3 and Soft-Off in S4/S5
  • Thermal Shutdown
• APPLICATIONS