TC643VUA Microchip Technology, TC643VUA Datasheet

TC643VUA

Manufacturer Part Number

TC643VUA

Description

IC FAN/MOTOR DRIVER 8-MSOP

Manufacturer

Microchip Technology

Datasheet

1.TC643VUA.pdf (8 pages)

Specifications of TC643VUA

Applications

DC Motor Driver, Brushless (BLDC)

Number Of Outputs

Voltage - Load

15V

Voltage - Supply

2.7 V ~ 5.5 V

Operating Temperature

0°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-MSOP, Micro8™, 8-uMAX, 8-uSOP,

Lead Free Status / RoHS Status

Contains lead / Request inventory verification

Current - Output

Other names

158-1035
158-1035

Current page: 1 of 8
Download datasheet (62Kb)

INTEGRATED FAN / MOTOR DRIVER

FEATURES

APPLICATIONS

FUNCTIONAL BLOCK DIAGRAM

0.002 F

Integrates Current Limited Power Driver and

Diagnostic/Monitoring Circuits in a Single IC

Works with Standard DC Brushless Fans/Motors

Supports Efficient PWM Drive with Logic-Level Input

Supply Range ........................................ 2.7V to 5.5V

Motor Voltage Independent of TC643 Supply

Voltage; Supports 3V-15V Fans!

Logic-Level Output Provides RPM Data

Optimized For Use as a Microcontroller Peripheral

Eliminates Discrete Components and Analog

Circuit Design Effort

Internal Thermal Shutdown For Fail-safe Operation

Available in 8-Pin PDIP, SOIC, and MSOP

Packaging

General Purpose Fan or Motor Speed Control

Power Supplies

Portable and Desktop Computers

Telecom Equipment, Servers

UPS’s, Power Amps, etc.

ILMT

RPM

DRV

EXT

SHOT

ONE-

DRIVER

DS21445A

TC643

I-LIMIT

dV/dt

–

REF

GND

FAN

GND

+5V

FAN

GENERAL DESCRIPTION

speed driver with diagnostic circuits. External components

are kept to a minimum by integrating the power transistor on

chip. Any logic-level signal can be used to drive the on-chip

Power Driver. The output is current limited and a logic-level

indication, ILMT, is provided to indicate an over-current

condition.

Each time the motor current is interrupted by commutation,

a logic pulse occurs on RPM. The fundamental frequency

of the resulting square wave is (4 x rpm). See the Applica-

tions section for more information and system design

guidelines.

digital logic to form a complete motor or fan control and

monitoring system, featuring: Variable Speed PWM

Drive; RPM Indication; and Motor Open / Motor Shorted

/ Motor Locked Fault Detection.

SOIC, and MSOP package.

ORDERING INFORMATION

Part No.

TC643VOA

TC643VPA

TC643VUA

PIN CONFIGURATIONS

The TC643 is a switchmode brushless DC fan/motor

The RPM output gives an indication of motor RPM.

The TC643 mates easily with microcontrollers or other

The TC643 is available in a standard 8-pin plastic DIP,

ILMT

DRV

RPM

ILMT

DRV

RPM

Package

8-Pin SOIC

8-Pin Plastic DIP

8-Pin MSOP

TC643VUA

PDIP/SOIC

TC643VOA

TC643VPA

MSOP

GND

FAN

GND

EXT

FAN

GND

FAN

GND

Temp. Range

EXT

0 C to +85 C

TC643

FAN

TC643-1

9/29/97

Related parts for TC643VUA

TC643VUA Summary of contents

Page 1

... Package Temp. Range 8-Pin SOIC 8-Pin Plastic DIP 8-Pin MSOP PDIP/SOIC GND FAN 2 7 DRV TC643VOA C ILMT 3 6 EXT TC643VPA 4 5 RPM GND MSOP V GND FAN DRV 2 7 FAN C TC643VUA ILMT 3 6 EXT GND RPM 4 5 TC643 + + +85 C FAN TC643-1 9/29/97 ...

Page 2

Page 3

... RPM 5 GND 6 C EXT 7 FAN 8 GND FAN © 2001 Microchip Technology Inc. DS21445A Over Operating Temperature Range, V GND = 0V, unless otherwise specified. FAN Test Conditions Min Note 2 20 — Description Power Supply Input. The IC's supply voltage can be independent of the fan's supply voltage ...

Page 4

... FAN LIMIT will be clamped at FAN (3) Architecting the microcontroller hardware and soft- 4 mance to the TC643. and considering its impact on RPM determination. ware (or other control scheme) to drive the TC643 and take full advantage of its fan management capabilities. © 2001 Microchip Technology Inc. DS21445A ...

Page 5

... INTEGRATED FAN / MOTOR DRIVER -CONTROLLER, DIGITAL ASIC, ETC. TIMER/ COUNTER I/O S/W or H/W PWM INTERRUPT LOGIC © 2001 Microchip Technology Inc. DS21445A Figure 1. ONE- RPM SHOT C EXT 0.002 F DRIVER DRV PULL-UP ILMT Figure 2. Typical Application Circuit 5 TC643 +12V + FAN dV/dt FAN + – ...

Page 6

... MSOP PIN 1 .122 (3.10) .197 (5.00) .189 (4.80) .114 (2.90) .043 (1.10) 6 MAX. MAX. .028 (0.70) .016 (0.40) 6 .310 (7.87) .290 (7.37) 3 MIN. .400 (10.16) .310 (7.87) .008 (0.20) .005 (0.13) Dimensions: inches (mm) © 2001 Microchip Technology Inc. DS21445A ...

Page 7

... INTEGRATED FAN / MOTOR DRIVER .050 (1.27) TYP. .197 (5.00) .189 (4.80) .020 (0.51) .013 (0.33) © 2001 Microchip Technology Inc. DS21445A 8-Pin SOIC .157 (3.99) .244 (6.20) .150 (3.81) .228 (5.79) .069 (1.75) .053 (1.35) 8 MAX. .010 (0.25) .050 (1.27) .004 (0.10) ...

Page 8

... Microchip. No licenses are conveyed, implicitly or otherwise, except as maybe explicitly expressed herein, under any intellec- tual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respective companies. ...

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