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TDA3601AQ Datasheet(PDF) 5 Page - NXP Semiconductors |
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TDA3601AQ Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 12 page 1995 Dec 13 5 Philips Semiconductors Product specification Multiple output voltage regulators TDA3601Q TDA3601AQ FUNCTIONAL DESCRIPTION The TDA3601Q is a multiple output voltage regulator with six fixed voltage regulators. Three, logical switch controlled, voltage regulators (numbers 4 to 6) are available, and one non-switchable voltage regulator (number 1). In addition, there are two further regulators (numbers 2 and 3), which are controlled by supply voltages VP1 and VP2 (Schmitt trigger). Regulator 1 is not affected by load dump or thermal shutdown. Regulators 2 to 6 are supplied by VP2; they can therefore be switched of by an ignition switch, for example. An internal bandgap voltage reference, which provides a reference voltage for each independent regulator, is supplied by VP1. This supply voltage VP1 also supplies regulator 1. A VP2 sense circuit outputs a logical high when the VP2 voltage rises through Vthr, which remains high until the VP2 voltage falls through Vthf. The supply voltage VP1 is sensed by an out-of-regulation Schmitt trigger. When this voltage drops below 5.95 V typical, the reset output is disabled, to prevent a microprocessor being disturbed by a too-low supply voltage. An out-of-regulation condition is indicated by a logical low and an in-regulation condition indicated by a logical high. The ‘Power On’ switch low will disable regulator 2 and 3 outputs. In addition, the logic switch will be disabled, so that regulators 4 to 6 are switched off. When both VP2-sense and out-of-regulation are high, the ‘Power On’ will be high, so that the logic multiplexer and regulators 2 and 3 are enabled. Regulators 4 to 6 can now be selected by the multiplexer. Re-triggerable one-shot circuits produce a RESET (open collector output) when VP1 is available (40 ms delay signal), or when both VP1 and VP2 are available (100 µs pulse). RESET will be held in a constant high state when the supply voltage VP1 is less than 5.5 V (5.95 V typical). The TDA3601 has a RESET output, but the TDA3601A has an inverted RESET output (RESET). LIMITING VALUES In accordance with the Absolute maximum System (IEC 134). Note 1. Regulator 1 operating, 0.5 mA ≤ I R1 ≤ 20 mA. THERMAL CHARACTERISTICS QUALITY SPECIFICATION Quality according to UZW-BO/FQ-0601. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VP1, VP2 supply voltage operating − 18 V non-operating − 30 V load dump protected; during 50 ms; tr > 2.5 ms; note 1 − 50 V Ptot total power dissipation Tcase < 30 °C − 15 W Tstg storage temperature range non-operating −55 150 °C Tvj virtual junction temperature operating −40 150 °C Vpr reverse polarity non-operating − 6V SYMBOL PARAMETER VALUE UNIT Rth j-c thermal resistance from junction to case 8 K/W Rth j-amb thermal resistance from junction to ambient in free air 40 K/W |
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