TB62756FUG Toshiba, TB62756FUG Datasheet - Page 13

• Manufacturer Part Number: TB62756FUG
• Manufacturer: Toshiba

Specifications of TB62756FUG

• Package: SOT23-6
• Supply Voltage: 2.8V to 5.5V
• # Leds Supported: 2 to 6 LEDs in series
• Sw Frequency: 1.1MHz
• Led Current Accuracy: ±5.23% (max)
• Protection Feature: -
• Other Features & Functions: -
• Rohs Compatible Product(s) (#): -

Notes on Contents
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,
[2] Use an appropriate power supply fuse to ensure that a large current does not continuously flow in case
[3] If your design includes an inductive load such as a motor coil, incorporate a protection circuit into the
[5] Carefully select external components (such as inputs and negative feedback capacitors) and load
[4] Do not insert devices in the wrong orientation or incorrectly.
1. Block Diagrams
2. Equivalent Circuits
3. Timing Charts
4. Application Circuits
5. Test Circuits
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purposes.
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory
purposes.
Timing charts may be simplified for explanatory purposes.
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.
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.
even for a moment. Do not exceed any of these ratings.
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.
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.
components (such as speakers), for example, power amp and regulator.
If there is a large amount of leakage current such as input or negative feedback condenser, 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.
Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury
by explosion or combustion.
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.
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 the device breakdown, damage or deterioration, and may result injury by
explosion or combustion.
In addition, do not use any device that is applied the current with inserting in the wrong orientation or
incorrectly even just one time.
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TB62756FUG
2010-06-27