Datasheet > CM3196

CM3196

更新时间： 2024-11-17 23:14:31

品牌	Logo	应用领域
CALMIRCO		稳压器双倍数据速率
页数	文件大小	规格书
13页	362K
描述
2A Sink/Source DDR-I, -II Bus Termination Regulator

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CM3196 数据手册

CM3196

2A Sink/Source DDR-I, -II Bus Termination Regulator

Product Description

Features

•

Ideal for DDR-I, -II V applications

The CM3196 is a sinking and sourcing regulator specif-

ically designed for DDR-I, -II V bus termination. The

•

Sinks and sources 2A for DDR-I, 0.6A for DDR-II

Shutdown input to support ACPI states

Operates down to 1.5V input voltage

Integrated power MOSFETs

Overcurrent protection

output voltage accurately tracks V

/2. For DDR-I it

DDQ

can source and sink current up to 2A with a load regu-

lation of 0.5%. This current adequately serves both sin-

gle and dual channel DDR-I memory systems. For

power conscious notebook applications, the CM3196

Over temperature protection

Excellent accuracy

also operates from a V

of 1.5V or 1.8V with less

DDQ

= V

30mV

REF

current drive. For DDR-II applications, the CM3196

provides up to 0.6A at 0.9V to drive the memory con-

= V

/2 2%

DDQ

•

8-pin SOIC or PSOP package

Lead-free versions available

troller V

TT.

For boards which support Suspend to RAM (STR)

functionality, the CM3196 provides a Shutdown (SD)

pin. When SD is set low, V will be in tri-state mode,

Applications

causing the output to go high impedance. In this mode,

CM3196 power is saved by significantly reducing the

•

DDR-I, -II memory termination

Active termination buses

Graphics card memory termination

quiescent current. V

voltage remains V

/2.

REF

DDQ

The CM3196 provides overcurrent and over tempera-

ture protection. These features protect the chip from

excessive heating due to high current and high temper-

ature.

The CM3196 is housed in an 8-pin SOIC or PSOP

package and is available with optional lead-free finish-

ing.

Simplified Electrical Schematic

AV_IN

V_DDQ

PV_IN

Over Temp

Over Current

Reference

Driver

V_TT

V_REF

OUT

Buffer

V_SENSE

GND

04/22/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112

▲

Tel: 408.263.3214

▲

Fax: 408.263.7846

▲

www.calmicro.com

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