TA7259 Ver la hoja de datos (PDF) - Toshiba

Número de pieza

componentes Descripción

Fabricante

TA7259

3-PHASE BRUSHLESS DC MOTOR DRIVER IC

Toshiba 

TA7259P/F/FG

Notes on Contents

1. Block Diagrams

Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified

for explanatory purposes.

2. Equivalent Circuits

The equivalent circuit diagrams may be simplified or some parts of them may be omitted for

explanatory purposes.

3. Timing Charts

Timing charts may be simplified for explanatory purposes.

4. Application Circuits

The application circuits shown in this document are provided for reference purposes only. Thorough

evaluation is required, especially at the mass production design stage.

Toshiba does not grant any license to any industrial property rights by providing these examples of

application circuits.

5. Test Circuits

Components in the test circuits are used only to obtain and confirm the device characteristics. These

components and circuits are not guaranteed to prevent malfunction or failure from occurring in the

application equipment.

IC Usage Considerations

Notes on handling of ICs

[1] The absolute maximum ratings of a semiconductor device are a set of ratings that must not be

exceeded, even for a moment. Do not exceed any of these ratings.

Exceeding the rating(s) may cause device breakdown, damage or deterioration, and may result in

injury by explosion or combustion.

[2] Use an appropriate power supply fuse to ensure that a large current does not continuously flow in

case of over-current and/or IC failure. The IC will break down completely when used under

conditions that exceed its absolute maximum ratings, when the wiring is routed improperly or when

an abnormal pulse noise occurs from the wiring or load, causing a large current to continuously flow

and the breakdown lead to smoke or ignition. To minimize the effects of the flow of a large current

in case of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit

location, are required.

[3] If your design includes an inductive load such as a motor coil, incorporate a protection circuit into

the design to prevent device malfunction or breakdown caused by the current resulting from the

inrush current at power ON or the negative current resulting from the back electromotive force at

power OFF. IC breakdown may cause injury, smoke or ignition.

Use a stable power supply with ICs with built-in protection functions. If the power supply is

unstable, the protection function may not operate, causing IC breakdown. IC breakdown may cause

injury, smoke or ignition.

[4] Do not insert devices in the wrong orientation or incorrectly.

Make sure that the positive and negative terminals of power supplies are connected properly.

Otherwise, the current or power consumption may exceed the absolute maximum rating, and

exceeding the rating(s) may cause device breakdown, damage or deterioration, and may result in

injury by explosion or combustion.

In addition, do not apply current to any device that is incorrectly inserted or oriented, even for an

instant.

16

2006-4-14

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