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TDA3606 Scheda tecnica(PDF) 4 Page - NXP Semiconductors |
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TDA3606 Scheda tecnica(HTML) 4 Page - NXP Semiconductors |
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4 / 16 page  1998 Jun 16 4 Philips Semiconductors Product specification Multiple voltage regulator with battery detection TDA3606 FUNCTIONAL DESCRIPTION The TDA3606 is a voltage regulator intended to supply a microprocessor (e.g. in car radio applications). Because of low voltage operation of the application, a low-voltage drop regulator is used in the TDA3606. This regulator will switch on when the supply voltage exceeds 7.5 V for the first time and will switch off again when the output voltage of the regulator drops below 2.4 V. When the regulator is switched on, the RES1 and RES2 outputs (RES2 can only be HIGH when RES1 is HIGH) will go HIGH after a fixed delay time (fixed by an external delay capacitor) to generate a reset to the microprocessor. RES1 will go HIGH by an internal pull-up resistor of 4.7 k Ω, and is used to initialize the microprocessor. RES2 is used to indicate that the regulator output voltage is within its voltage range. This start-up feature is built-in to secure a smooth start-up of the microprocessor at first connection, without uncontrolled switching of the regulator during the start-up sequence. All output pins are fully protected. The regulator is protected against load dump and short-circuit (foldback current protection). Interfacing with the microprocessor can be accomplished by means of a battery Schmitt-trigger and output buffer (simple full/semi on/off logic applications). The battery output will go HIGH when the battery input voltage exceeds the HIGH threshold level. Fig.3 Timing diagrams. handbook, full pagewidth 2.1 V VP regulator reset 1 50 V 4.35 V 4.35 V 2.4 V 2 V 2 V 2 V reset 2 on/off switch battery input battery output reset delay capacitor MGB857 |
Codice articolo simile - TDA3606 |
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