Semtech SC1486A

Features

• 1% DC accuracy
• Compatible with DDR1, DDR2 and DDR3 memory power requirements
• Constant on-time for fast dynamic response
• VBAT range = 1.8V – 25V
• DC current sense using low-side RDS(ON) sensing or sense resistor
• Integrated reference buffer for VTT
• Low power S3 state with high-Z VTT
• Resistor programmable on-time
• Cycle-by-cycle current limit
• Digital soft-start
• PSAVE option for VDDQ
• Over-voltage/under-voltage fault protection
• <20μA shutdown current
• Low quiescent power dissipation
• Two Power Good indicators
• Separate enable for each switcher
• Integrated gate drivers with soft switching - no gate resistors required
• Efficiency >90%
• 28 Lead TSSOP (Lead-free available, fully WEEE and RoHS compliant)

应用

• Notebook computers
• CPU I/O supplies
• Handheld terminals and PDAs

Packaging

TSSOP-28

Order Codes

• SC1486AITSTR: Package Minimum Tape & Reel Only
• SC1486AITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only