CM3205 Datasheet | California Micro Devices

Features - - - - - - - - - - - - - - - 5A continuous current from VDDQ 1.8V to 2.6V adjustable VDDQ output voltage 600-m V 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 ponent 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 5m A quiescent current TO252 and TO263 packages for high performance thermal dissipation and easy PC board layout Optional Ro HS pliant Lead-free packaging 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-m V at 5A load current. The CM3205 provides fast response to transient load changes. Load regulation is excellent, less than 1%, from no load to full load. It also has built-in over-current limits and thermal shutdown at 170°C. The CM3205 is packaged in an easy-to-use 5-pin D2PAK (TO263-5) and DPAK (TO252-5). Low thermal resistance (48°C/W) allows it to withstand 1.7W (1) dissipation at 85°C ambient. It can operate over the industrial ambient temperature range of - 40°C to 85°C. Applications - - - - - - - - DDR memory and active termination buses Desktop puters, Servers Residential and Enterprise Gateways DSL Modems Routers and Switchers DVD recorders 3D AGP cards LCD TV and STB Typical Application 2.50V , 5A VDDQ VDDQ ADJSD VDDQ GND VTT VIN C hip S et DL0 RT0 DLn RTn 3.3V REF Memory 680u 4.7u 887 S/D 845 4.7u 4.7u 680u VREF 1.25V , 2.5A 680u 1k 1u © 2006 California Micro Devices Corp....