tda3618ajr NXP Semiconductors, tda3618ajr Datasheet - Page 2

• Manufacturer Part Number: tda3618ajr
• Description: Multiple Voltage Regulator With Switch And Ignition Buffers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
General
Protection
ORDERING INFORMATION
2002 Feb 12
TDA3618AJR
Extremely low noise behaviour and good stability with
very small output capacitors
Two V
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 V
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.
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
Multiple voltage regulator with
switch and ignition buffers
NUMBER
TYPE
P
-state controlled regulators and a power switch
DBS17P
NAME
P
plastic DIL-bent-SIL (special bent) power package;
17 leads (lead length 12 mm)
2
DESCRIPTION
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:
PACKAGE
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 V
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.
TDA3618AJR
Product specification
P
.
SOT475-1
VERSION