Datasheet > AP2303

AP2303

更新时间： 2024-02-06 15:47:41

品牌	Logo	应用领域
美台 - DIODES		双倍数据速率
页数	文件大小	规格书
15页	947K
描述
DDR BUS TERMINATION REGULATOR

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技术参数
数据手册

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AP2303 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.64	Base Number Matches：	1

AP2303 数据手册

A Product Line of

Diodes Incorporated

AP2303

DDR BUS TERMINATION REGULATOR

Description

Pin Assignments

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 (1/2V_DDQ) within ±10mV.

(Top View)

VIN

GND

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.

VREFEN

VOUT

VCNTL

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 (V_TT=0.9V), DDR-III (V_TT=0.75V), DDR-IIIL

(V_TT=0.675V), DDR-IV (V_TT=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 V_IN, V_CNTLand V_REFEN

Rising and Shutdown along with V_IN, V_CNTLand V_REFENDropping

Flexible Output by 2 External Resistors

Requires Minimum 10µF Output Ceramic Capacitor for

Application

VIN

GND



Exposed

Pad

VCNTL

VREFEN

VOUT



PSOP-8



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)

Applications



DDR-II/DDR-III/DDR-IIIL/DDR-IV Memory System

Desktop PC, Notebook Mother Board

Graphic Card

STB, LCD-TV, Web-TV

Notes:

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 <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

V_CNTL=3.3V/5V

V_IN=1.8V/1.5V/1.35V/1.2V

R_TT

C_CNTL

C_IN

VIN

VCNTL

VREFEN

VOUT

AP2303

Shutdown

GND

C_SS

C_OUT

R_DUMMY

Enable

1 of 15

www.diodes.com

September 2014

AP2303

Document number: DS36546 Rev. 3 - 2

12 3 4 5 6 7...15

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