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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TDA3609 Fiches technique(PDF) 2 Page - NXP Semiconductors |
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TDA3609 Fiches technique(HTML) 2 Page - NXP Semiconductors |
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2 / 20 page  1997 Aug 15 2 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3609JR FEATURES General • Extreme low noise behaviour and good stability with very small output capacitors • Two V P-state controlled regulators (regulator 1 and regulator 3) and a power switch • Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown • Separate control pins for switching regulator 1, regulator 3 and the power switch • Supply voltage range of −18 to +50 V • Low reverse current of regulator 2 • Low quiescent current (when regulator 1, regulator 3, and power switch are switched-off) • Hold output (only valid when regulator 1 is switched-on) • Reset and hold outputs (open collector outputs) • Adjustable reset delay time • High ripple rejection • Back-up capacitor for regulator 2 • Two independent ignition buffers (one inverted and with open collector output). Protections • Reverse polarity safe (down to −18 V without high reverse current) • Able to withstand voltages up to 18 V at the outputs (supply line may be short-circuited) • ESD protected on all pins • Thermal protections with hysteresis • Load dump protection • Foldback current limit protection for regulators 1, 2 and 3 • Delayed second current limit protection for the power switch (at short-circuit) • The regulator outputs and the power switch are DC short-circuited safe to ground and VP. GENERAL DESCRIPTION The TDA3609JR is a multiple output voltage regulator with a power switch and ignition buffers, intended for use in car radios with or without a microcontroller. It contains: • Two fixed voltage regulators with a foldback current protection (regulator 1 and regulator 3) and one fixed voltage regulator (regulator 2), intended to supply a microcontroller, that also operates during load dump and thermal shutdown • A power switch with protections, operated by an enable input • Reset and hold outputs that can be used to interface by the microcontroller. The reset-signal can be used to call up the microcontroller and the hold output indicates regulator 1 voltage available and within range. • A supply pin which can withstand load dump pulses and negative supply voltages. • Regulator 2 that will be switched on at a back-up voltage greater than 6.5 V and off when the output voltage of regulator 2 drops below 1.9 V. • A provision for use of a reserve supply capacitor that will hold enough energy for regulator 2 (5 V continuous) to allow a microcontroller to prepare for loss of voltage. • An inverted ignition 1 input with open collector output stage. • An ignition 2 input Schmitt trigger with push pull output stage. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA3609JR DBS17P plastic DIL-bent-SIL (special bent) power package; 17 leads (lead length 12 mm) SOT475-1 |
Numéro de pièce similaire - TDA3609 |
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Description similaire - TDA3609 |
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