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Q67000-A9277 Datasheet(PDF) 3 Page - Siemens Semiconductor Group |
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Q67000-A9277 Datasheet(HTML) 3 Page - Siemens Semiconductor Group |
3 / 11 page TLE 4265 Semiconductor Group 3 1998-11-01 Circuit Description The control amplifier compares a highly precise reference voltage, produced by resistor alignment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. A saturation control, a function of the load current, prevents any over-saturating of the power element. If the output voltage drops below 4.5 V, the external reset-delay capacitor is discharged by the reset generator. If the voltage on the capacitor reaches the lower threshold V ST, a signal is triggered on the reset output and not canceled again until the upper threshold V dT is exceeded. The IC is protected against overload, overtemperature and reverse polarity. Saturation Control and Protection Adjustment Reset Generator Buffer + - Control Amplifier Temperature Sensor Bandgap Reference 1 5 4 2 Output Reset Delay Reset Output In- put GND 3 AEB01493 |
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