TA8051P
· Detailed explanation
The output current is detected by monitoring the VBE from each output transistor. One detection circuit
connects to one of the output transistors and leads to the short-circuit protection circuit. When a current
exceeding the ISD detection current flows through one of the four output transistors, the short-circuit
protection circuit is activated. This circuit contains a timer. When overcurrent condition continues for 20μs
(typically) , the protection circuit places the output in high-impedance mode and, 80μs (typically) later,
returns the IC to ON mode. The switching-waveform output is repeated until overcurrent condition is no
longer present.
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2002-02-27