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TS4268 Scheda tecnica(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
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TS4268 Scheda tecnica(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 7 page TS4268 180mA Fixed-Voltage Ultra Low LDO 4/7 Version: B07 Circuit Description The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturation of the power element. If The externally scaled down output voltage at the reset threshold input drops below 1.35 V, the external reset delay capacitor is discharged by the reset generator. If the voltage on the capacitor reaches the lower threshold VST, a reset signal is generated on the reset output and not cancelled again until the upper threshold voltage is exceeded. If the reset threshold input is connected to GND, reset is triggered at an output voltage of 4.5 V. A connected microcontroller is monitored by the watchdog logic. If pulses are missing, the rest output is set to low. The pulse sequence time can be set within a wide range with the reset delay capacitor. TS4268 is also incorporates a member of internal circuits for protection against: • Over load • Over temperature • Reverse polarity Block Diagram |
Codice articolo simile - TS4268_08 |
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Descrizione simile - TS4268_08 |
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