BD6389FM_11 datasheet, PDF - EEWORLD Datasheet

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BD6389FM_11: DescriptionSilicon monolithic integrated circuits; File Size184KB，5 Pages; ManufacturerROHM Semiconductor; Websitehttps://www.rohm.com/

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BD6389FM_11 Overview

Silicon monolithic integrated circuits

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1/4

STRUCTURE

PRODUCT SERIES

TYPE

FUNCTION

Silicon monolithic integrated circuits

Bipolar stepping motor driver

BD6389FM

・PWM

constant current controllable two H bridge driver

・Built-in

translator circuit for CLK-IN control

・Full,

Half, Quarter step

・Mixed

Decay control

・Parallel

IN control

○Absolute

maximum ratings(Ta=25℃)

Item

Supply voltage

Limit

Unit

-0.2½+36.0

※

2.8

Power dissipation

※

5.2

Input voltage for control pin

-0.2½+5.5

RNF maximum voltage

RNF

0.5

Maximum output current

OUT

2.2

※

A/phase

Operating temperature range

opr

-25½+75

℃

Storage temperature range

stg

-55½+150

℃

Junction temperature

jmax

150

℃

※

70mm×70mm×1.6mm glass epoxy board. Derating in done at 22.4mW/℃ for operating above Ta=25℃.

※

4-layer recommended board. Derating in done at 41.6mW/℃ for operating above Ta=25℃.

※

Do not, however exceed Pd, ASO and Tjmax=150℃.

Symbol

CC0,1,2

○Operating

conditions (Ta=-25½+75℃)

Item

Symbol

Supply voltage

CC0,1,2

Output current

OUT

※

Do not, however exceed Pd, ASO.

Min

Typ

1.7

Max

1.9

※

Unit

A/phase

This product isn’t designed for protection against radioactive rays.

REV. B

4/4

○Operation

Notes

(1) Absolute maximum ratings

An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating

conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a

short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings,

consider adding circuit protection devices, such as fuses.

(2) Power supply lines

As return of current regenerated by back EMF of motor happens, take steps such as putting capacitor

between power supply and GND as an electric pathway for the regenerated current. Be sure that there is no

problem with each property such as emptied capacity at lower temperature regarding electrolytic capacitor

to decide capacity value. If the connected power supply does not have sufficient current absorption capacity,

regenerative current will cause the voltage on the power supply line to rise, which combined with the

product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to

implement a physical safety measure such as the insertion of a voltage clamp diode between the power

supply and GND pins.

(3) GND potential

The potential of GND pin must be minimum potential in all operating conditions.

(4) Thermal design

Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual

operating conditions. This IC is equipped with FIN heat dissipation terminals, but dissipation efficiency can

be improved by applying heat dissipation treatment in this area. It is important to consider actual usage

conditions and to take as large a dissipation pattern as possible.

(5) Actions in strong electromagnetic field

Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the

IC to malfunction.

(6) ASO

When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO.

(7) Thermal shutdown circuit

The IC has a built-in thermal shutdown circuit (TSD circuit). If the chip temperature becomes Tjmax=150℃,

and higher, coil output to the motor will be open. The TSD circuit is designed only to shut the IC off to

prevent runaway thermal operation. It is not designed to protect or indemnify peripheral equipment. Do not

use the TSD function to protect peripheral equipment.

(8) Ground Wiring Pattern

When using both small signal and large current GND patterns, it is recommended to isolate the two ground

patterns, placing a single ground point at the ground potential of application so that the pattern wiring

resistance and voltage variations caused by large currents do not cause variations in the small signal

ground voltage. Be careful not to change the GND wiring pattern of any external components, either.

(9) TEST pin

Be sure to connect TEST pin to GND.

REV. B

Notice

Notes

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content specified herein is subject to change for improvement without notice.

The content specified herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the specifications,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specified in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information specified herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products specified in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, office-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products specified in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, fire or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

may result in a direct threat to human life or create a risk of human injury (such as a medical

instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-

controller or other safety device). ROHM shall bear no responsibility in any way for use of any

of the Products for the above special purposes. If a Product is intended to be used for any

such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specified herein that may

be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to

obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

www.rohm.com

R1120A

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