CM3212

• Two linear regulators -Maximum 2A current from VDDQ -Source and sink up to 2A VTT current
• 1.7V to 2.8V adjustable VDDQ output voltage
• 0.85V to 1.4V VTT output voltage (tracking at 50% of VDDQ)
• Buffered VREF output
• 500mV typical VDDQ dropout voltage at 2A
• Excellent load and line regulation, low noise
• Meets JEDEC DDR-I and DDR-II memory power spec
• Linear regulator design requires no inductors and has low external component count
• Integrated power MOSFETs
• Dual purpose ADJ/Shutdown pin
• Enable VTT pin for sleep or suspend to RAM function
• Built-in over-current limit and thermal shutdown for VDDQ and VTT
• Fast transient response
• Low quiescent current
• TDFN-8 RoHS compliant lead-free package
• SOIC-8 RoHS compliant lead-free package

The CM3212 is a dual-output low noise linear regulator designed to meet SSTL-2 and SSTL-3 specifications for DDR-SDRAM VDDQ supply and termination voltage

VTT supply. With integrated power MOSFETs the CM3212 can source up to 2A of VDDQ continuous current, and source or sink up to 2A VTT continuous current. The typical dropout voltage for VDDQ is 500mV at 2A load current.

The CM3212 provides excellent full load regulation and fast response to transient load changes. It also has built-in over-current limits and thermal shutdown at 170°C.

The CM3212 supports Suspend-To-RAM (STR) and ACPI compliance with Shutdown Mode which tri-states VTT to minimize quiescent system current.

The CM3212 is available in a space saving TDFN-8 and SOIC-8 surface mount packages. Low thermal resistance allows them to withstand high power dissipation at 85°C ambient. The CM3212 can operate over the industrial ambient temperature range of -40°C to 85°C.