技术特性

• Switching section
  • 0.8 V ±1% voltage reference
  • 2.7 V to 5.5 V input voltage range
  • Fast response, constant frequency, current mode control
  • Three independent, adjustable, SMPS For DDR2/3 (VDDQ) and chipset supply
  • S3-S5 states compliant DDR2/3 section
  • Active soft-end for all outputs
  • Selectable tracking discharge for VDDQ
  • Separate Power Good signals
  • Pulse skipping at light load
  • Programmable current limit and soft-start for all outputs
  • Latched OVP, UVP protection
  • Thermal protection
• Reference and termination voltages (VTTREF and VTT)
  • ±2 Apk LDO for DDR2/3 termination (VTT) with fold back
  • Remote VTT output sensing
  • High-Z VTT output in S3
  • ±15 mA low noise DDR2/3 buffered reference (VTTREF)

功能框图