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Description

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.

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.
 
AP2303 features over temperature protection and current limit protection for both source and sink.
 
AP2303 is available in packages of SOIC-8 and PSOP-8.

Application

  • DDR-II/DDR-III/DDR-IIIL/DDR-IV Memory System
  • Desktop PC, Notebook Mother Board
  • Graphic Card
  • STB, LCD-TV, Web-TV

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
  • Halogen and Antimony Free. “Green” Device

Product Specifications

Product Parameters

Features N/A
IOUT N/A A
VIN (Max) N/A V
VIN (Min) N/A V
VOUT N/A V
IQ 0.5 µA
PSRR N/A dB
VDROPOUT (Max) 0.52 V
Operating Temperature (Ambient) -40 to 85
Enable Active N/A
Channels 1

Related Content

Quality Documentation

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP2303MPTR-G1 Digi-Key Electronics 1779 8/11/2020 Buy Now United States
AP2303MPTR-G1 Mouser Electronics Inc. 6145 8/11/2020 Buy Now United States
AP2303MTR-G1 Avnet EU 4000 8/11/2020 Buy Now Germany
AP2303MTR-G1 Digi-Key Electronics 4698 8/11/2020 Buy Now United States
AP2303MTR-G1 Mouser Electronics Inc. 6672 8/11/2020 Buy Now United States