Maxim > Products > Thermal Management > MAX6643LBEVKIT

MAX6643LBEVKIT

Evaluation Kit for the MAX6643/MAX6644

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX6643LB evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that demonstrates the operation of the MAX6643LB fan controller. The MAX6643LB monitors its internal temperature and the junction temperature of an optional external diode-connected transistor. Based on the temperature measurements, the MAX6643LB generates a PWM waveform that drives the gate of an external n-channel power MOSFET, which modulates the cooling fan's power supply, thus providing automatic fan-speed control.

The high- and low-temperature fan-control thresholds are easily programmable by connecting programming pins to ground or supply or leaving them disconnected. The fan-control algorithm is optimized to minimize the audible artifacts of varying fan speeds. Fan failure is detected by monitoring the fan's tachometer output. Also provided is an over-temperature output with pin-programmable threshold.

The EV kit can also be used to evaluate other versions of the MAX6643/MAX6644 fan-controlling ICs.

Data Sheet

Download	Rev 0	(PDF, 116kB)
E-Mail

Key Features

Automatic Fan-Speed Control
Local and Remote Temperature Sensing
Programmable Low, High, and Over-Temperature Thresholds
Minimizes Acoustic Noise
Fan-Failure Detection
Configured for 5V to 12V Fans Up to 1A
Reconfigurable for Up to Two Fans
Surface-Mount Components
Fully Assembled and Tested
Evaluates All Versions of the MAX6643 and MAX6644 (IC Replacement Required)

Applications/Uses

Desktop Computers
Networking Equipment
Servers
Storage Equipment
Workstations

Product Guides

Thermal Management (PDF)

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6643LBEVKIT			Active	KIT; Land Pattern: Not Available		See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Products with Similar Part Numbers

MAX6643, MAX6644, MAX6645

Automatic PWM Fan-Speed Controllers with Overtemperature Output

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3642 Rev 0; 2005-05-09
This page last modified: 2011-04-05