MAX1617 データシートの表示（PDF） - ON Semiconductor

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MAX1617

SMBus Temperature Sensor with Internal and External Diode Input

ON Semiconductor 

MAX1617

SMBus Temperature Sensor

with Internal and External

Diode Input

The MAX1617 is a serially programmable temperature sensor

optimized for monitoring modern high performance CPUs with

on–board, integrated temperature sensing diodes. Temperature data is

converted from the CPU’s diode outputs and made available as an

8–bit digital word.

Communication with the MAX1617 is accomplished via the

standard System Management Bus (SMBus) commonly used in

modern computer systems. This permits reading the current

internal/external temperature, programming the threshold setpoints,

and configuring the device. Additionally, an interrupt is generated on

the ALERT pin when temperature moves outside the preset threshold

windows in either direction.

A Standby command may be sent via the SMBus by signaling the

STBY input to activate the low–power Standby mode. Registers can

be accessed while in Standby mode. Address selection inputs allow up

to nine MAX1617s to share the same 2–wire SMBus for multi–zone

monitoring.

All registers can be read by the host, and both polled and interrupt

driven systems are easily accommodated. Small size, low installed

cost, and ease of use make the MAX1617 an ideal choice for

implementing sophisticated system management schemes, such as

ACPI.

Features

• Includes Internal and External Sensing Capability

• Outputs Temperature As 8–Bit Digital Word

• Solid State Temperature Sensing; 1°C Resolution

• 3.0–5.5 V Operating Range

• Independent Internal and External Threshold Set–Points With

ALERT Interrupt Output

• SMBus 2–Wire Serial Interface

• Up To 9 MAX1617s May Share the Same Bus

• Low Standby Power Mode

• Low Power: 70 µA (max) Operating, 10 µA (max) Standby Mode

• 16–Pin Plastic QSOP Package

• Operating Temperature Range: –55°C to +125°C

Typical Applications

• Thermal Protection For Intel “Deschutes” Pentium II™ and Other

High Performance CPUs with Integrated On–Board Diode - No

Sensor Mounting Problems!

• Accurate Temperature Sensing From Any Silicon Junction Diode

• Thermal Management in Electronic Systems: Computers, Network

Equipment, Power Supplies

http://onsemi.com

16–Pin QSOP

DB SUFFIX

CASE TBD

PRELIMINARY INFORMATION

PIN CONFIGURATION

NC 1

16 NC

VDD 2

15 STBY

D+ 3

14 SCL

D– 4

13 NC

NC

5

MAX1617

12

SDA

ADD1 6

11 ALERT

GND 7

10 ADD0

GND 8

9 NC

(Top View)

ORDERING INFORMATION

Device

Package

Shipping

MAX1617DBR2 16–Pin QSOP 2500 Tape/Reel

© Semiconductor Components Industries, LLC, 2001

1

April, 2001 – Rev. 1

Publication Order Number:

MAX1617/D

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