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TDA3618 データシート(PDF) 2 Page - NXP Semiconductors |
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TDA3618 データシート(HTML) 2 Page - NXP Semiconductors |
2 / 24 page 2001 May 02 2 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR FEATURES General • Extremely low noise behaviour and good stability with very small output capacitors • Two VP-state controlled regulators 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 from −18 to +50 V • Low reverse current of regulator 2 • Low quiescent current when regulator 1, regulator 3 and the power switch are switched off • Hold output for low VP • Hold output for regulators 1 and 3 • Hold output for foldback mode switch • Hold output for load dump and temperature protection • Reset (push-pull) and hold (open collector) outputs • Adjustable reset delay time • High ripple rejection • Backup capacitor for regulator 2 • Two independent ignition buffers, one inverted and with open collector output. Protection • Reverse polarity safe, down to −18 V • 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-circuit safe to ground and VP. GENERAL DESCRIPTION The TDA3618AJR 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 foldback current protection (regulators 1 and 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 protection, operated by an enable input • Reset and hold outputs that can be used to interface with the microcontroller; the reset signal can be used to wake up the microcontroller • A supply pin that can withstand load dump pulses and negative supply voltages • Regulator 2, which is switched on at a backup voltage greater than 6.5 V and off when the output voltage of regulator 2 drops below 1.9 V • A provision for the 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 TDA3618AJR DBS17P plastic DIL-bent-SIL (specially bent) power package; 17 leads (lead length 12 mm) SOT475-1 |
同様の部品番号 - TDA3618 |
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同様の説明 - TDA3618 |
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