Product Description

The CM3205 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 MOSFET’s, the CM3205 can source up to 5A of VDDQ current, and source or sink up to 2A VTT current. The typical dropout voltage for VDDQ is 600-mV at 5A load current.

Features

• 5A continuous current from VDDQ

• 1.8V to 2.6V adjustable VDDQ output voltage

• 600-mV typical VDDQ dropout voltage at 5A

• VTT tracking at 50 of VDDQ

• Source and sink up to 2A VTT current

• Excellent load and line regulation, low noise

• Fast transient response

• Meets JEDEC DDR-I SDRAM power spec.

• Linear regulator design requires no inductors and has low external component count

• Integrated power MOSFETs

• Dual purpose ADJ/Shutdown pin

• Built-in over-current limit with short-circuit foldback and thermal shutdown for VDDQ and VTT

• 5mA quiescent current

• TO252 andTO263 packages for high performance thermal dissipation and easy PC board layout

• Optional RoHS Compliant Lead-free packaging

Applications

• DDR memory and active termination buses

• Desktop Computers, Servers

• Residential and Enterprise Gateways

• DSL Modems

• Routers and Switchers

• DVD recorders

• 3D AGP cards

• LCD TV and STB