EZ1900 Semtech Corporation, EZ1900 Datasheet

EZ1900

Manufacturer Part Number

EZ1900

Description

Manufacturer

Semtech Corporation

Datasheets

1.EZ1900.pdf (5 pages)

2.EZ1900.pdf (5 pages)

Specifications of EZ1900

Case

SOP8

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

EZ1900

Manufacturer:

Quantity:

20 000

Current page: 1 of 5
Download datasheet (126Kb)

May 27, 1999

DESCRIPTION

The EZ1900 is a high performance positive load cur-

rent balancer designed for use in applications utiliz-

ing 2 regulators in parallel to achieve equal current

sharing or identical current for each load. The regula-

tor balance controller allows a flexible motherboard

design to be made to cope with different processor

configurations. The controller reads a logic level up-

grade signal (denoted V

ilar on AMD, Cyrix and PowerPC microprocessors) to

control the output voltage of two linear low dropout

voltage regulators to the CPU core and I/O planes. In

single-voltage plane configurations (V

both regulators are set to the same output voltage

(usually 3.3 - 3.5V) and are configured in master-

slave mode. For split plane processors (V

the outputs of the two regulators are switched - the

core voltage will be set to a nominal 2.5V while the

I/O voltage will remain at 3.3V. The actual output

voltages can be adjusted by means of resistors. The

EZ1900 programmable current balancer is available

in the popular SO-8 surface mount package.

PIN CONFIGURATION

Slave Mode Pin: For non “Computer Select Operation”, the Select

Mode, pin #1, can be left open circuited for continuous slave mode

operation or balance current control. Ground the Select Mode, pin #1,

for non-slave mode operation.

Pin #

Legend

+IN

Sel

-IN

-V

OUT

Non-slave mode, voltage select

Negative error amplifier input

Positive error amplifier input

Power input, common

No Connection

Sets V

Power input, positive

No connection

CC2DET

OUT

on the Intel P55C; sim-

of slave device

Description

CC2DET

Pentium Processor is a trademark of Intel Corp. PowerPC is a trademark of IBM Corp. AMD5

CC2DET

REGULATOR

BALANCE CONTROLLER

floating),

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

low),

FEATURES

APPLICATIONS

ORDERING INFORMATION

EZ1900CS

Note:

(1) Add suffix ‘TR’ for tape and reel.

ABSOLUTE MAXIMUM RATINGS

Parameter

Input Voltage Supply

Differential

Amplifier

Slave Output Current

(sink only)

Thermal Resistance

Junction to Ambient

Operating Junction

Temperature Range

Storage

Temperature Range

Lead Temperature

(Soldering) 5 Sec

652 MITCHELL ROAD NEWBURY PARK CA 91320

Current balance controller for regulators in parallel

Slave and non-slave voltage modes

Slave or non-slave mode computer selected

Compatible with 3 or 5 pin low drop regulators

Remote sense operation

SO-8 package

Flexible upgrade from single voltage plane to

split-plane processors

Intel Pentium® Processor P54CS & P55C

upgrades

PowerPC™ 603 & 604 upgrades

AMD5

DEVICE

86™ upgrades

(1)

Symbol Maximum

-IN, +IN

SLAVE

86 is a trademark of Advanced Micro Devices.

LEAD

STG

OUT

-65 to 125

0 to +V

0 to 70

PACKAGE

160

260

SO-8

EZ1900

Units

°C/W

°C

Related parts for EZ1900

Related keywords

EZ1900 datasheet
EZ1900 data sheet
EZ1900 pdf datasheet
EZ1900 component
EZ1900 part
EZ1900 distributor
EZ1900 RoHS
EZ1900 datasheet download