AP2303MPTR-G1

A Product Line of Diodes Incorporated AP2303 DDR BUS TERMINATION REGULATOR Description Pin Assignments NEW PRODUCT The AP2303 is a low dropout linear regulator to generate termination voltage of DDR-SDRAM system. The regulator can source or sink up to 1.75A current continuously. The output voltage is regulated to track tightly with the reference voltage (1/2VDDQ) within ±10mV. (Top View) The AP2303 supports soft start-up when used to turn on the VCNTL and VREFEN. It integrates a shutdown circuit that will be triggered once the voltage of VIN, VCNTL or VREFEN falls below a certain value. VIN 1 8 NC GND 2 7 NC VREFEN 3 6 VCNTL VOUT 4 5 NC 8 NC 7 NC 6 VCNTL 5 NC AP2303 features over temperature protection and current limit protection for both source and sink. SOIC-8 AP2303 is available in packages of SOIC-8 and PSOP-8. (Top View) Features           Support DDR-II (VTT=0.9V), DDR-III (VTT=0.75V), DDR-IIIL (VTT=0.675V), DDR-IV (VTT=0.6V) Application Source and Sink up to 1.75A Current Output Voltage Accuracy Over Full Load: ±2% (Max.) Soft Start-up and Shutdown along with VIN, VCNTL and VREFEN Rising and Shutdown along with VIN, VCNTL and VREFEN Dropping Flexible Output by 2 External Resistors Requires Minimum 10µF Output Ceramic Capacitor for Application Current Limit Protection for Both Source and Sink OTSD Protection Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: VIN 1 GND 2 VREFEN 3 VOUT 4 Exposed Pad PSOP-8 Applications     DDR-II/DDR-III/DDR-IIIL/DDR-IV Memory System Desktop PC, Notebook Mother Board Graphic Card STB, LCD-TV, Web-TV 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain