Product Description
The CM3121 provides an integrated power solution for DDR-I and DDR-II memory systems in consumer electronics applications. The CM3121 is ideal for a 2.8V to 3.6V supply for DDR-I memory and 2.2V to 2.8V for DDR-II memory.

FEATUREs
• Fully integrated power solution for DDR memory
   ICs
• Ideal for DDR-I (2.5VDDQ) and DDR-II (1.8VDDQ)
• Lowest system cost and smallest footprint with just
   two external output capacitors
• Two linear regulators:
   - VDDQ regulator with a maximum output current
      of 1.5A shared by DRAM and VTT regulator
   - source-sink VTT regulator with maximum 
      output current of 0.5A (DDR-I) or 0.3A (DDR-II)
• Fault output indicates overcurrent condition in
   either regulator, under voltage lock-out and 
   overtemperature condition
• Reverse current protection if host is powered off
• PSOP-8 package with integrated heat spreader
• Lead-free versions available

APPLICATIONs
• DDR-I and DDR-II memory power for:
   − Set Top Boxes, DVD Players, Games
   − Digital TVs, Flat Panel Displays
   − Printers, Digital Projectors
   − Embedded systems
   − Communications systems