MAX6616 Maxim Integrated Products, MAX6616 Datasheet

MAX6616

Manufacturer Part Number

MAX6616

Description

Dual-Channel Temperature Monitors and Fan-Speed Controllers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX6616.pdf (20 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX6616AEG+

Manufacturer:

Maxim Integrated Products

Quantity:

135

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Download datasheet (222Kb)

The MAX6615/MAX6616 monitor two temperature chan-

nels, either the internal die temperature and the temper-

ature of an external thermistor, or the temperatures of

two external thermistors. The temperature data controls

a PWM output signal to adjust the speed of a cooling

fan, thereby minimizing noise when the system is run-

ning cool, but providing maximum cooling when power

dissipation increases. The fans’ tachometer output sig-

nals are monitored by the MAX6615/MAX6616 to detect

fan failure. If a fan failure is detected, the FAN_FAIL

output is asserted.

The 2-wire serial interface accepts standard system

management bus (SMBus

send byte, and receive byte commands to read the

temperature data and program the alarm thresholds.

The programmable alarm output can be used to gener-

ate interrupts, throttle signals, or overtemperature shut-

down signals.

The MAX6616 features six GPIOs to provide additional

flexibility. All of the GPIOs power-up as inputs, with the

exception of GPIO0, which powers up as either an input

or an output as determined by connecting the PRESET

pin to ground or V

The MAX6616 is available in a 24-pin QSOP package,

while the MAX6615 is available in a 16-pin QSOP pack-

age. Both devices operate from a single-supply voltage

range of 3.0V to 5.5V, have operating temperature

ranges of -40°C to +125°C, and consume just 500µA of

supply current.

19-3713; Rev 2; 10/08

Typical Application Circuits and Pin Configurations appear at

end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

SMBus is a trademark of Intel Corp.

Desktop Computers

Servers

Power Supplies

Networking Equipment

Workstations

Fan-Speed Controllers with Thermistor Inputs

________________________________________________________________ Maxim Integrated Products

Dual-Channel Temperature Monitors and

General Description

) write byte, read byte,

Applications

o Two Thermistor Inputs

o Two Open-Drain PWM Outputs for Fan-Speed

o Local Temperature Sensor

o Six GPIOs (MAX6616)

o Programmable Fan-Control Characteristics

o Controlled PWM Rate-of-Change Ensures

o Fail-Safe System Protection

o OT Output for Throttling or Shutdown

o Nine Different Pin-Programmable SMBus

o 16-Pin and 24-Pin QSOP Packages

MAX6615AEE

MAX6616AEG

Control

Unobtrusive Fan-Speed Adjustments

Addresses

SCL

SDA

TH1

TH2

REF

PART

THERMISTORS

TEMP SENSOR

MAX6615

MAX6616

AND LOCAL

INTERFACE

REGISTERS

SMBus

GND

AND

-40°C to +125°C

TEMP RANGE

Ordering Information

*MAX6616 ONLY

Functional Diagram

ADD0

GENERATOR

AND TACH

COUNTER

FAN_FAIL

LOGIC

PWM

www.DataSheet4U.com

ADD1

PIN-PACKAGE

16 QSOP

24 QSOP

Features

TACH1

PWM1

TACH2

PWM2

GPIO0*

GPIO5*

PRESET*

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