TB62777FG Toshiba, TB62777FG Datasheet - Page 18

• Manufacturer Part Number: TB62777FG
• Manufacturer: Toshiba

Specifications of TB62777FG

• Package: SSOP16
• # Outputs: 8
• Vout Max: 25V
• Io: 5.0 to 40mA
• Io Accuracy: ±6.0%
• Features Error Detection: -
• Features Gain Control: -
• Features Pwm Dimming: -
• Other Features & Functions: -
• Rohs Compatible Product(s) (#): Available

Points to remember on handling of ICs
(5)
(1)
(2)
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.
Heat Dissipation Design
In using an IC with large current flow such as a power amp, regulator or driver, please design the
device so that heat is appropriately dissipated, not to exceed the specified junction temperature (Tj) at
any time or under any condition. These ICs generate heat even during normal use. An inadequate IC
heat dissipation design can lead to decrease in IC life, deterioration of IC characteristics or IC
breakdown. In addition, please design the device taking into consideration the effect of IC heat
dissipation on peripheral components..
Back-EMF
When a motor rotates in the reverse direction, stops, or slows down abruptly, a current flow back to the
motor’s power supply due to the effect of back-EMF. If the current sink capability of the power supply
is small, the device’s motor power supply and output pins might be exposed to conditions beyond
maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in your
system design.
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TB62777FNG/FG
2010-03-08