AIC1384PSHTB 查看數據表（PDF） - Analog Intergrations

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AIC1384PSHTB

DDR Termination Regulator

Analog Intergrations 

FEATURES

Source and Sink Current Capability

Suspend To RAM Functionality

Support DDRⅠ (1.25VTT) and DDRⅡ (0.9VTT)

Requirements

Low Output Voltage Offset, ±20mV

High Accuracy Output Voltage at Full-Load

Low External Component Count

No external resistor required

Current Limit protection

Thermal Protection

SOP-8 and SOP-8 Exposed Pad (Heat Sink)

Package

APPLICATIONS

Mother board

Graphic cards

DDRⅠ and DDRⅡ termination voltage

AIC1384

DDR Termination Regulator

DESCRIPTION

The AIC1384 linear regulator is designed to

deliver 1.5A continuous current and up to 3A

peak transient currents for termination of DDR-

SRAM. The AIC1384 contains a high-speed

operational amplifier to supply superior load

transient response. It also includes a VSENSE to

provide excellent load regulation and VREF

output as a reference for the chipset and

DIMMs. The AIC1384 supply accurate VTT and

VREF without external resistors that save PCB

areas.

The AIC1384 also features an active low

shutdown pin that provides Suspend To RAM

(STR) functionality. The VTT will remain high

impedance when in shutdown, but VREF will

keep active. The advantage of power saving

can be obtained through low 150µA (DDRⅠ)

quiescent current.

Built in current limiting in source and sink mode,

with thermal shutdown provide maximal

protection to the AIC1384 against fault

conditions.

TYPICAL APPLICATION CIRCUIT

1

SD

2

3

VREF=1.25V

4

10nF

GND

VTT 8

SD

PVIN 7

6

VSENSE AVIN

VREF VDDQ 5

VDDQ=2.5V

AIC1384

VTT=1.25V

Cout

22uF

VIN=2.5V

Cin

47uF

Analog Integrations Corporation

Si-Soft Research Center

3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.

TEL: 886-3-5772500

FAX: 886-3-5772510 www.analog.com.tw

DS-1384G-01 073108

1

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