参数资料
型号: TB62214FTG
元件分类: 运动控制电子
英文描述: STEPPER MOTOR CONTROLLER, 2 A, PQCC48
封装: 7 X 7 MM, 0.50 MM PITCH, ROHS COMPLIANT, PLASTIC, QFN-48
文件页数: 18/27页
文件大小: 687K
代理商: TB62214FTG
TB62214FG/FTG
2010-06-10
25
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. Example Application Circuits
The example application circuits shown in this document are provided for reference only. Thorough
evaluation and testing should be implemented when designing your application's mass production design.
In providing these example application circuits, Toshiba does not grant the use of any industrial property
rights.
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 the device breakdown, damage or deterioration, and may result
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 fully break down 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 can
lead 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 incorrectly or in the wrong orientation.
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 breakdown, damage or deterioration of the device, and may result
in injury by explosion or combustion.
In addition, do not use any device that has had current applied to it while inserted incorrectly or in the
wrong orientation even once.
(5)
Carefully select power amp, regulator, or other external components (such as inputs and negative
feedback capacitors) and load components (such as speakers).
If there is a large amount of leakage current such as input or negative feedback capacitors, the IC
output DC voltage will increase. If this output voltage is connected to a speaker with low input
withstand voltage, overcurrent or IC failure can cause smoke or ignition. (The over current can cause
smoke or ignition from the IC itself.) In particular, please pay attention when using a Bridge Tied Load
(BTL) connection type IC that inputs output DC voltage to a speaker directly.
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