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BA5929FP Folha de dados(PDF) 4 Page - Rohm

Nome de Peças BA5929FP
Descrição Electrónicos  Silicon Monolithic Integrated Circuit
Download  6 Pages
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BA5929FP Folha de dados(HTML) 4 Page - Rohm

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REV. A
CAUTIONS ON USE
(1)
Setting the standby terminal (pin 17) voltage to open or to 0.5V (typ.) or less, the driver will turn OFF
and the power saving mode can be set.
Under conditions of normal use, the pin 17 should be pulled-up to 2.0V or above.
(2)
On the Bias terminal (pin 25), the applied voltage of 0.7V (typ.) or less will activate a mute function.
Under conditions of normal use, it should be set to 1.3V or above.
(3)
Thermal shutdown (TSD) or bias terminal voltage drop will activate the mute function, where only the
driver part can be muted.
While muting, the voltage at the output terminal will equal to the internal
reference voltage (approximately Vcc/2).
(4)
Connecting a capacitive load to the OP-AMP output results in a phase margin reduction of the amp and
may cause an oscillation or a peak.
When connecting a capacitive load, a resistance must be
inserted in series between the output and the capacitive load.
And after careful consideration of the
frequency characteristics, the device should be used within the range where no problem is found in
actual use.
(5)
The radiating fin must be connected to the external GND.
(6)
Short-circuit between output pin -VCC, output pin-GND, or output terminals (load short) must be
avoided.
Mounting the ICs in improper directions may damage themselves or produce smoke.
(7)
About absolute maximum ratings
Exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature
range, may cause permanent device damage.
As these cases cannot be limited to the broken short
mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is
assumed, it is recommended to take mechanical safety measures such as attaching fuses.
(8)
About power supply lines
As a measure against the back current regenerated by a counter electromotive force of the motor, a
capacitor to be used as a regenerated-current path can be installed between the power supply and
GND and its capacitance value should be determined after careful check that any problems, for
example, a leak capacitance of the electrolytic capacitor at low temperature, are not found in various
characteristics.
(9)
About GND potential
The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states.
(10) About thermal design
With consideration of the power dissipation (Pd) under conditions of actual use, a thermal design
provided with an enough margin should be done.
(11) About operations in a strong electric field
When used in a strong electric field, note that a malfunction may occur.
(12) ASO
When using this IC, the output Tr. must be set not to exceed the values specified in the absolute
maximum ratings and ASO.
(13) Thermal shutdown circuit
This IC incorporates a thermal shutdown circuit (TSD circuit).
When the chip temperature reaches the
value shown below, the coil output to the motor will be set to open.
The thermal shutdown circuit is designed only to shut off the IC from a thermal runaway and not
intended to protect or guarantee the entire IC functions.
Therefore, users cannot assume that the TSD circuit once activated can be used continuously in the
subsequent operations.
TSD ON Temperature
[
°C] (typ.)
Hysteresis Temperature
[
°C] (typ.)
175
25
(14) About earth wiring patterns
When a small signal GND and a large current GND are provided, it is recommended that the large
current GND pattern and the small signal GND pattern should be separated and grounded at a single
point of the reference point of the set in order to prevent the voltage of the small signal GND from being
affected by a voltage change caused by the resistance of the pattern wiring and the large current.
Make sure that the GND wiring patterns of the external components will not change, too.


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