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INTEGRATED CIRCUITS
DATA SHEET
TDA3618JR Multiple voltage regulator with switch and ignition buffers
Preliminary specification Supersedes data of 1999 Jul 13 File under Integrated Circuits, IC01 1999 Sep 01
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
FEATURES General * Extremely low noise behaviour and good stability with very small output capacitors * Two VP-state controlled regulators (regulators 1 and 3) and a power switch * Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown * Separate control pins for switching regulators (regulators 1 and 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 for low VP (regulators 1 and 3 off) * Hold output for regulators 1 and 3 * Hold output for foldback mode switch * Hold output for load dump and temperature protection * Reset and hold outputs (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). 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 ORDERING INFORMATION TYPE NUMBER TDA3618JR PACKAGE NAME DBS17P DESCRIPTION plastic DIL-bent-SIL (specially bent) power package; 17 leads (lead length 12 mm) * Load dump protection
TDA3618JR
* 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 TDA3618JR 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 (regulators 1 and 3) and one fixed voltage regulator (regulator 2), intended to supply a microcontroller, which 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 with the microcontroller. The reset signal can be used to call up the microcontroller. * A supply pin which 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.
VERSION SOT475-1
1999 Sep 01
2
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
QUICK REFERENCE DATA SYMBOL Supply VP supply voltage operating reverse polarity regulator 2 on jump start load dump protection Iq(tot) Tj VO(REG1) VO(REG2) VO(REG3) Vd IM total quiescent supply current junction temperature 1 mA IREG1 600 mA 0.5 mA IREG2 150 mA; VP = 14.4 V 1 mA IREG3 750 mA ISW = 1 A ISW = 1.8 A peak current t 10 minutes t 50 ms; tr 2.5 ms standby mode non-operating 11 - 2.4 - - - - 8.5 4.75 4.75 - - 3 PARAMETER CONDITIONS MIN.
TDA3618JR
TYP.
MAX.
UNIT
14.4 - 14.4 - - 310 - 9.0 5.0 5.0
18 18 50 30 50 400 150
V V V V V A C V V V
Voltage regulators output voltage of regulator 1 output voltage of regulator 2 output voltage of regulator 3 9.5 5.25 5.25
Power switch drop-out voltage 0.45 1 - 0.7 1.8 - V V A
1999 Sep 01
3
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
BLOCK DIAGRAM
TDA3618JR
handbook, full pagewidth
VP
(14.4 V)
1
Vthr = 7 V, Vthf = 4.5 V
POWER SWITCH
17
(14.2 V/3 A)
SW
ENSW
11
&
TEMPERATURE LOAD DUMP PROTECTION
BACK-UP SWITCH
16
(14.2 V/100 mA)
BU
BACK-UP CONTROL
REGULATOR 2
15
(5 V/150 mA)
REG2
&
4 EN3
REGULATOR 3
3
(5 V/750 mA)
REG3
TDA3618JR
REGULATOR 1 2 (9 V/600 mA) REG1
&
10 EN1
12
HOLD
1
&
9
RES
CRES IGN2IN
13 5 IGNITION BUFFER 8 7 6 INVERTER IGN2OUT IGN1OUT
IGN1IN
14 GND
MGR928
Fig.1 Block diagram.
1999 Sep 01
4
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
PINNING SYMBOL VP REG1 REG3 EN3 IGN2IN IGN1IN IGN1OUT IGN2OUT RES EN1 ENSW HOLD CRES GND REG2 BU SW PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DESCRIPTION supply voltage regulator 1 output regulator 3 output enable input regulator 3 ignition 2 input ignition 1 input ignition 1 output (active LOW) ignition 2 output reset output enable input regulator 1 enable input power switch hold output (active LOW) reset delay capacitor ground regulator 2 output backup power switch output
REG2 15 BU 16 SW 17
MGR929
TDA3618JR
handbook, halfpage
VP REG1 REG3 EN3 IGN2IN IGN1IN IGN1OUT IGN2OUT RES
1 2 3 4 5 6 7 8 9
TDA3618JR
EN1 10 ENSW 11 HOLD 12 CRES 13 GND 14
Fig.2 Pin configuration.
1999 Sep 01
5
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
FUNCTIONAL DESCRIPTION The TDA3618JR is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. Because of the low-voltage operation of the car radio, low-voltage drop regulators are used in the TDA3618JR. Regulator 2 switches on when the backup voltage exceeds 6.5 V for the first time and switches off again when the output voltage of regulator 2 falls below 1.9 V (this is far below an engine start). When regulator 2 is switched on and its output voltage is within its voltage range, the reset output is enabled (RES goes HIGH through a pull-up resistor) to generate a reset to the microcontroller. The reset cycles can be extended by an external capacitor at pin 13. This start-up feature is included to secure a smooth start-up of the microcontroller at first connection, without uncontrolled switching of regulator 2 during the start-up sequence. The charge of the backup capacitor can be used to supply regulator 2 for a short period when the supply drops to 0 V (the time depends on the value of the storage capacitor). The output stages (regulators 1 and 3) of this regulator have an extremely low noise behaviour and good stability. Regulators 1 and 3 are stabilized by using small output capacitors. When both regulator 2 and the supply voltage (VP > 4.5 V) are available, regulators 1 and 3 can be operated by means of enable inputs (pins 10 and 4 respectively). The HOLD output pin is normally HIGH and is active LOW. The HOLD output pin is connected to an open collector NPN transistor and must have an external pull-up resistor to operate. The HOLD output is controlled by a LOW detection circuit which, when activated, pulls the warning output LOW (enabled). The hold outputs of the regulators are connected to an OR gate inside the IC such that the hold is activated (goes LOW) when the regulator voltages of regulator 1 and/or regulator 3 are out of regulation for any reason. Each regulator enable input controls its own hold circuit, such that if a regulator is disabled or switched off, the hold circuit for that regulator is disabled. The hold is also controlled by the temperature and load dump protection. Activating the temperature or load dump protection causes a hold (LOW) during the time the protection is activated. When all regulators are switched off, the HOLD output is controlled by the battery line (pin 1), temperature protection and load dump protection.
TDA3618JR
The hold is enabled (LOW) at low battery voltages. This indicates that it is not possible to get regulator 1 into regulation when switching it on. The hold function includes hysteresis to avoid oscillations when the regulator voltage crosses the hold threshold. The HOLD output becomes also active (LOW) when the switch is in foldback protection mode, see Fig.4 for a timing diagram. The block diagram is given in Fig.3. The power switch can also be controlled by means of a separate enable input (pin 11). All output pins are fully protected. The regulators are protected against load dump (regulators 1 and 3 switch off at supply voltages >18 V) and short circuit (foldback current protection). The switch contains a current protection. However, this protection is delayed at short circuit by the reset delay capacitor. During this time, the output current is limited to a peak value of at least 3 and 2 A continuous (VP 18 V). In the normal situation, the voltage on the reset delay capacitor is about 3.5 V (depending on the temperature). The switch output is about VP - 0.4 V. At operational temperature, the switch can deliver at least 3 A. At high temperature, the switch can deliver about 2 A. During an overload condition or short circuit (VSW < VP - 3.7 V), the voltage on the reset delay capacitor rises 0.6 V above the voltage of regulator 2. This rise time depends on the capacitor connected on the CRES (pin 13). During this time, the switch can deliver more than 3 A. The charge current of the reset delay capacitor is typically 4 A and the voltage swing about 1.5 V. When regulator 2 is out of regulation and generates a reset, the switch can only deliver 2 A and will go in the foldback protection without delay. At supply voltages >17 V, the switch is clamped at 16 V maximum (to avoid externally connected circuits being damaged by an overvoltage) and the switch will switch off at load dump. Interfacing with the microcontroller (simple full/semi on/off logic applications) can be realized with two independent ignition Schmitt triggers and ignition output buffers (one open collector and one push-pull output). Ignition 1 output is inverted. The total timing diagrams are shown in Figs 4 and 5.
1999 Sep 01
6
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
TDA3618JR
handbook, full pagewidth
VP
1 internal voltage ref. 1 internal voltage ref. 2
low battery detector
TDA3618JR
output stage 2
REG1
&
out of regulation detector
enable EN1 10
OR
REGULATOR 1 output stage 3
REG3
OR
out of regulation detector REGULATOR 3
12 buffer
HOLD
enable EN3 4
TEMPERATURE PROTECTION >150 C
LOADDUMP
V16 FOLDBACK MODE
MGL792
Fig.3 Block diagram of the HOLD.
1999 Sep 01
7
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
TDA3618JR
handbook, full pagewidth
load dump
7.0 V 4.5 V
VP
50 V
ignition 1 3.25 V input
1.1 V
-100 V
ignition 1 output
5.0 V
Enable Schmitt trigger ignition 1
load dump VP
50 V
ignition 2 input
2.2 V 2.0 V -100 V
ignition 2 output
5.0 V
Enable Schmitt trigger ignition 2
VP
>1.8 V enable regulator 3 >1.3 V >1.8 V enable regulator 1 >1.3 V
regulator 3
regulator 1 temperature active protection 150 C passive HOLD
HIGH LOW
MGR930
Fig.4 Timing diagram of ignition Schmitt triggers and HOLD.
1999 Sep 01
8
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
TDA3618JR
handbook, full pagewidth
load dump
VP
VBU
6.5 V 5.4 V
regulator 2 reset delay capacitor reset
5.0 V 1.9 V 0V 5.0 V 3.0 V 0V 6.0 V
Back-up Schmitt trigger and reset behaviour
load dump
18 V 10.4 V 7.0 V 4.0 V
VP
2.2 V enable regulator 1 2.0 V 10 V
regulator 1
0V 2.2 V enable regulator 3 2.0 V 5.0 V
regulator 3
0V
VP and enable Schmitt trigger
load dump
16.9 V
VP
7.0 V 4.0 V
enable power switch power switch output
2.2 V 2.0 V 16 V
0V
Power switch behaviour
MGK610
Fig.5 Timing diagram of regulators and power switch.
1999 Sep 01
9
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP operating reverse polarity jump start load dump protection Ptot Tstg Tamb Tj total power dissipation storage temperature ambient temperature junction temperature non-operating operating operating non-operating t 10 minutes t 50 ms; tr 2.5 ms PARAMETER supply voltage - - - - - -55 -40 -40 CONDITIONS MIN.
TDA3618JR
MAX. 18 18 30 50 62 +150 +85 +150 V V V V W
UNIT
C C C
THERMAL CHARACTERISTICS SYMBOL Rth(j-c) Rth(j-a) PARAMETER thermal resistance from junction to case thermal resistance from junction to ambient in free air CONDITIONS VALUE 2 50 UNIT K/W K/W
1999 Sep 01
10
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
CHARACTERISTICS VP = 14.4 V; Tamb = 25 C; see Fig.8; unless otherwise specified. SYMBOL Supplies VP supply voltage operating regulator 2 on jump start load dump protection Iq quiescent supply current note 1 t 10 minutes t 50 ms; tr 2.5 ms VP = 12.4 V; note 2; IREG2 = 0.1 mA VP = 14.4 V; note 2; IREG2 = 0.1 mA Schmitt trigger for power supply of switch, regulators 1 and 3 Vthr Vthf Vhys Vthr Vthf Vhys Vthr Vthf Vhys ILI Vthr rising threshold voltage falling threshold voltage hysteresis voltage 6.5 4.0 - 6.0 1.7 - 1.4 0.9 IREG = ISW = 1 mA Ven = 5 V VP rising; IREG1 = 50 mA; note 3 - 1 7.0 4.5 2.5 11 2.4 - - - - 14.4 14.4 - - 310 315 PARAMETER CONDITIONS MIN. TYP.
TDA3618JR
MAX.
UNIT
18 18 30 50 400 -
V V V V A A
7.5 5.0 - 7.1 2.3 - 2.4 1.9 - 10 VREG2 - 0.1
V V V
Schmitt trigger for regulator 2 rising threshold voltage falling threshold voltage hysteresis voltage 6.5 1.9 4.6 V V V
Schmitt trigger for enable input (regulators 1, 3 and switch) rising threshold voltage falling threshold voltage hysteresis voltage input leakage current 1.8 1.3 0.5 5 VREG2 - 0.15 V V V A V
Reset trigger level of regulator 2 rising threshold voltage 4.5
Schmitt triggers for HOLD output Vthr1 Vthf1 Vhys1 Vthr3 Vthf3 Vhys3 rising threshold voltage of regulator 1 VP rising; note 3 - 8.1 - VP rising; note 3 - 4.1 - VREG1 - 0.15 VREG1 - 0.35 0.2 VREG3 - 0.15 VREG3 - 0.35 0.2 VREG1 - 0.075 V - - V V
falling threshold voltage of VP falling; note 3 regulator 1 hysteresis voltage due to regulator 1 rising threshold voltage of regulator 3
VREG3 - 0.075 V - - V V
falling threshold voltage of VP falling; note 3 regulator 3 hysteresis voltage due to regulator 3
1999 Sep 01
11
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
SYMBOL Vthr(VP) Vthf(VP) Vhys PARAMETER rising threshold voltage of supply voltage CONDITIONS Ven = 0 V MIN. 9.1 9.0 - 9.7 9.4 0.3 TYP.
TDA3618JR
MAX. 10.3 9.8 -
UNIT V V V
falling threshold voltage of Ven = 0 V supply voltage hysteresis voltage of supply voltage Ven = 0 V
Reset and hold buffer IsinkL ILO tr tf Reset delay Ich Idch Vthr(RES) td(RES) Vthr(SW) td(SW) charge current discharge current rising voltage threshold reset signal delay time reset signal rising voltage threshold switch foldback protection delay time switch foldback C = 47 nF; note 6 protection C = 47 nF; note 5 2 500 2.5 20 - 8 4 800 3.0 35 VREG2 17.6 8 - 3.5 70 - 40 A A V ms V ms LOW-level sink current output leakage current rise time fall time VRES/HOLD 0.8 V VP = 14.4 V; VRES/HOLD = 5 V note 4 note 4 2 - - - - 0.1 7 1 - 5 50 50 mA A s s
Regulator 1 (IREG1 = 5 mA; unless otherwise specified) VO(off) VO(REG1) V VL Iq SVRR Vd IREG1m IREG1sc output voltage off output voltage line regulation load regulation quiescent current supply voltage ripple rejection drop-out voltage current limit short-circuit current 1 mA IREG1 600 mA 12 V VP 18 V 12 V VP 18 V 1 mA IREG1 600 mA IR1 = 600 mA fi = 3 kHz; Vi(p-p) = 2 V IREG1 = 550 mA; VP = 9.5 V; note 7 VREG1 > 8.5 V; note 8 RL 0.5 ; note 9 0.5 mA IREG2 300 mA 8 V VP 18 V 18 V VP 50 V; IREG2 150 mA V line regulation 6 V VP 18 V 6 V VP 50 V 1999 Sep 01 12 - 8.5 8.5 - - - 60 - 0.65 250 1 9.0 9.0 2 20 25 70 0.4 1.2 800 400 9.5 9.5 75 100 60 - 0.7 - - mV V V mV mV mA dB V A mA
Regulator 2 (IREG2 = 5 mA; unless otherwise specified) VO(REG2) output voltage 4.75 4.75 4.75 - - 5.0 5.0 5.0 2 15 5.25 5.25 5.25 50 75 V V V mV mV
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
SYMBOL VL SVRR Vd PARAMETER load regulation supply voltage ripple rejection drop-out voltage CONDITIONS 1 mA IREG2 150 mA 1 mA IREG2 300 mA f = 3 kHz; Vi(p-p) = 2 V IREG2 = 100 mA; VP = 4.75 V; note 7 IREG2 = 200 mA; VP = 5.75 V; note 7 IREG2 = 100 mA; Vbu = 4.75 V; note 10 IREG2 = 200 mA; Vbu = 5.75 V; note 10 IREG2m IREG2sc current limit short-circuit current VREG2 > 4.5 V; note 8 RL 0.5 ; note 9 MIN. - - 60 - - - - 0.32 20 - 1 mA IREG3 750 mA 7 V VP 18 V V VL Iq SVRR Vd IREG3m IREG3sc Vd line regulation load regulation quiescent current supply voltage ripple rejection drop-out voltage current limit short-circuit current 7 V VP 18 V 1 mA IREG3 750 mA IR3 = 750 mA fi = 3 kHz; Vi(p-p) = 2 V IREG3 = 500 mA; VP = 5.75 V; note 7 VREG3 > 4.5 V; note 8 RL 0.5 ; note 9 ISW = 1 A; VP = 13.5 V; note 11 ISW = 1.8 A; VP = 13.5 V; note 11 Idc Vclamp IM Vfb Isc continuous current clamping voltage peak current short-circuit current VP = 16 V; VSW = 13.5 V VP 17 V VP = 17 V; notes 6, 12, 13 VP = 14.4 V; VSW < 1.2 V; note 13 4.75 4.75 - - - 60 - 0.80 100 - - 1.8 13.5 3 - - 20 - 70 0.4 0.8 0.2 0.8 0.37 100 TYP.
TDA3618JR
MAX. 50 100 - 0.6 1.2 0.5 1.0 - -
UNIT mV mV dB V V V V A mA
Regulator 3 (IREG3 = 5 mA; unless otherwise specified) VO(off) VO(REG3) output voltage off output voltage 1 5.0 5.0 2 20 19 70 1 0.90 400 400 5.25 5.25 50 100 45 - 1.5 - - 0.70 1.8 - 16.0 - 22 - mV V V mV mV mA dB V A mA
Power switch drop-out voltage 0.45 1.0 2.0 15.0 - VP + 3 0.8 V V A V A V A
fly back voltage behaviour ISW = -100 mA
1999 Sep 01
13
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
SYMBOL backup switch Idc Vclamp Ir Vthr Vthf Vhys ILI II(clamp) VIH(clamp) VIL(clamp) continuous current clamping voltage reverse current VP 16.7 V VP = 0 V; Vbu = 12.4 V 0.3 - - 2.75 0.8 1.5 VIGN1IN = 5 V VIGN1IN > 50 V - - VP -0.6 0.35 - - 3.25 - - - - - - - PARAMETER CONDITIONS MIN. TYP.
TDA3618JR
MAX.
UNIT
A V A V V V A mA V V
16 900
Schmitt trigger for enable input of ignition 1 rising threshold voltage of ignition 1 input falling threshold voltage of ignition 1 input hysteresis voltage input leakage current input clamping current HIGH-level input clamping voltage LOW-level input clamping voltage 3.75 1.3 - 1.0 50 50 0
Schmitt trigger for power supply of ignition 1 Vthr Vthf VOL IOL ILO tPLH tPHL rising threshold voltage falling threshold voltage note 14 6.5 4.0 7.0 4.5 7.5 5.0 V V
Ignition 1 buffer LOW-level output voltage LOW-level output current output leakage current LOW-to-HIGH propagation time HIGH-to-LOW propagation time IIGN1OUT = 0 mA VIGN1OUT 0.8 V VIGN1OUT = 5 V; VIGN1IN = 0 V VIGN1IN rising from 0.8 to 3.75 V VIGN1IN falling from 3.75 to 0.8 V 0 0.45 - - - 0.2 0.8 - - - 0.8 - 1.0 500 500 V mA A s s
Schmitt trigger for enable input of ignition 2 Vthr Vthf Vhys ILI II(clamp) VIH(clamp) VIL(clamp) rising threshold voltage of ignition 2 input VP > 3.5 V 1.9 1.7 0.1 - - VP -0.6 2.2 2.0 0.2 - - - - 2.5 2.3 0.5 1.0 50 50 0 V V V A mA V V
falling threshold voltage of VP > 3.5 V ignition 2 input hysteresis voltage input leakage current input clamp current HIGH-level input clamping voltage LOW-level input clamping voltage VP > 3.5 V VIGN2IN = 5 V VIGN2IN > 50 V
1999 Sep 01
14
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
SYMBOL Ignition 2 buffer VOL VOH IOL IOH ILO tPLH tPHL Notes 1. Minimum operating voltage, only if VP has exceeded 6.5 V. LOW-level output voltage HIGH-level output voltage LOW-level output current HIGH-level output current output leakage current (source) LOW-to-HIGH propagation time HIGH-to-LOW propagation time IIGN2OUT = 0 mA IIGN2OUT = 0 mA VIGN2OUT 0.8 V VIGN2OUT 4.5 V VIGN2OUT = 5 V; VIGN2IN = 0 V VIGN2IN rising from 1.7 to 2.5 V VIGN2IN falling from 2.5 to 1.7 V 0 4.5 0.45 -0.45 - - - 0.2 5.0 0.8 -2.0 - - - PARAMETER CONDITIONS MIN. TYP.
TDA3618JR
MAX.
UNIT
0.8 5.25 - - 1.0 500 500
V V mA mA A s s
2. The quiescent current is measured in the standby mode. Therefore, the enable inputs of regulators 1, 3 and the power switch are grounded and RL(REG2) = (see Fig.8). 3. The voltage of the regulator drops as a result of a VP drop. 4. The rise and fall times are measured with a 10 k pull-up resistor and a 50 pF load capacitor. 5. The delay time depends on the value of the capacitor: C 3 t d = ----- x V C(th) = C x ( 750 x 10 ) [ s ] I ch
6. The delay time depends on the value of the reset delay capacitor: C 3 t d_high current = ------ x V C ( th ) = C x ( 375 x 10 ) [ s ] I ch 7. The drop-out voltage of regulators 1, 2 and 3 is measured between VP and REGn. 8. At current limit, IREGmn is held constant (see Fig.6 for the behaviour of IREGmn). 9. The foldback current protection limits the dissipated power at short circuit (see Fig.6). 10. The drop-out voltage measured between BU and REG2. 11. The drop-out voltage of the power switch is measured between VP and SW. 12. The maximum output current of the switch is limited to 1.8 A when the supply voltage exceeds 18 V. A test mode is built in. The delay time of the switch is disabled when a voltage of VP + 1 V is applied to the switch-enable input. 13. At short circuit, Isc of the power switch is held constant to a lower value than the continuous current after a delay of at least 10 ms. A test-mode is built in. The delay time of the switch is disabled when a voltage of VP + 1 V is applied to the switch-enable input. 14. VIGN1OUT = LOW for VIGN1OUT > 1.2 V or VEN1 > 1.3 V or VEN3 > 1.3 V or VENSW > 1.3 V.
1999 Sep 01
15
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
handbook, halfpage
MBK946
TDA3618JR
9V
handbook, halfpage
VO(REG2) VO(REG1) 5.0 V
MGL598
IREG1sc IREG1
IREG1m
IREG2sc IREG2
IREG2m
a. Regulator 1.
handbook, halfpage
VO(REG3) 5.0 V
MGL599
IREG3sc IREG3
IREG3m
b. Regulator 2. Fig.6 Foldback current protection of the regulators.
handbook, full pagewidth
MGR931
Vsw VP - 3.3 V
generates hold 2VBE 1A
delayed
not delayed
>1.8 A Isw
>3 A
Fig.7 Current protection of the power switch.
1999 Sep 01
16
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
TEST AND APPLICATION INFORMATION Test information
TDA3618JR
handbook, full pagewidth
supply voltage 1 17 C1 220 nF enable input power switch 11 15
power switch output C2 220 nF regulator 2 output C3 10 F 5V RL(REG2) 5 k RL(SW) 12 k
VP
VENSW enable input regulator 1 VEN1 enable input regulator 3 4 VEN3 3 regulator 3 output regulator 1 output
10
2
10 V C4 10 F 5V C5 10 F RL(REG3) 5 k RL(REG1) 10 k
reset delay capacitor C7 47 nF
TDA3618JR
13 9 reset output R2 10 k C6 1 F
back-up Vbu C8
16 12
hold output
R3 10 k
R5 VIGN1 10 k C9 1 nF
ignition 1 input
6
ignition 1 output 7
R4 10 k
R6 VIGN2 10 k C10 1 nF
ignition 2 input 5 14 ground 8
ignition 2 output
MGR932
Fig.8 Test circuit.
1999 Sep 01
17
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
Application information NOISE Table 1 Noise figures NOISE FIGURE (V)(1) REGULATOR 1 2 3 Note 1. Measured at a bandwidth of 200 kHz. The noise on the supply line depends on the value of the supply capacitor and is caused by a current noise (the output noise of the regulators is translated to a current noise by the output capacitors). When a high frequency capacitor of 220 nF in parallel with an electrolytic capacitor of 100 F is connected directly to pins 1 and 14 (supply and ground), the noise is minimal. STABILITY The regulators are stabilized with the externally connected output capacitors. Co = 10 F tbf tbf tbf Co = 47 F 150 150 200 Co = 100 F tbf tbf tbf
TDA3618JR
The output capacitors can be selected by using the graphs of Figs 9 and 10. When an electrolytic capacitor is used, the temperature behaviour of this output capacitor can cause oscillations at a low temperature. The two examples below show how an output capacitor value is selected.
Example 1
Regulators 1 and 3 are stabilized with an electrolytic output capacitor of 220 F (ESR = 0.15 ). At -30 C, the capacitor value is decreased to 73 F and the ESR is increased to 1.1 . The regulator remains stable at -30 C.
Example 2
Regulator 2 is stabilized with a 10 F electrolytic capacitor (ESR = 3 ). At -30 C, the capacitor value is decreased to 3 F and the ESR is increased to 23.1 . Using Fig.10, the regulator will be instable at -30 C.
Solution
To avoid problems with stability at low temperatures, the use of tantalum capacitors is recommended. Use a tantalum capacitor of 10 F or a larger electrolytic capacitor.
handbook, halfpage
20
MGK612
handbook, halfpage
R () 15
R ()
14 12 10
MGK613
maximum ESR
maximum ESR 10
8 6 stable region
5
stable region
4 2 minimum ESR 0.22 1 10 100
0 0.1 1 10 C (F) 100
0 C (F)
Fig.9
Curve for selecting the value of output capacitor for regulators 1 and 3.
Fig.10 Curve for selecting the value of output capacitor for regulator 2.
1999 Sep 01
18
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
PACKAGE OUTLINE DBS17P: plastic DIL-bent-SIL (special bent) power package; 17 leads (lead length 12 mm)
TDA3618JR
SOT475-1
non-concave D x Dh
Eh
view B: mounting base side
d
A2
B j E A
L3
L
Q
1 Z e e1 bp wM
17 c m e2 vM
0
5 scale
10 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A 17.0 15.5 A2 4.6 4.2 bp 0.75 0.60 c 0.48 0.38 D (1) 24.0 23.6 d 20.0 19.6 Dh 10 E (1) 12.2 11.8 e 2.54 e1 e2 Eh 6 j 3.4 3.1 L 12.4 11.0 L3 2.4 1.6 m 4.3 Q 2.1 1.8 v 0.8 w 0.4 x 0.03 Z (1) 2.00 1.45
1.27 5.08
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT475-1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 97-05-20
1999 Sep 01
19
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
SOLDERING Introduction to soldering through-hole mount packages This text gives a brief insight to wave, dip and manual soldering. A more in-depth account of soldering ICs can be found in our "Data Handbook IC26; Integrated Circuit Packages" (document order number 9398 652 90011). Wave soldering is the preferred method for mounting of through-hole mount IC packages on a printed-circuit board. Soldering by dipping or by solder wave The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joints for more than 5 seconds.
TDA3618JR
The total contact time of successive solder waves must not exceed 5 seconds. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg(max)). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. Manual soldering Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 C, contact may be up to 5 seconds.
Suitability of through-hole mount IC packages for dipping and wave soldering methods SOLDERING METHOD PACKAGE DIPPING DBS, DIP, HDIP, SDIP, SIL Note 1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications. suitable suitable(1) WAVE
1999 Sep 01
20
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
NOTES
TDA3618JR
1999 Sep 01
21
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
NOTES
TDA3618JR
1999 Sep 01
22
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and ignition buffers
NOTES
TDA3618JR
1999 Sep 01
23
Philips Semiconductors - a worldwide company
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For all other countries apply to: Philips Semiconductors, International Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 1999
Internet: http://www.semiconductors.philips.com
SCA 67
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
545002/02/pp24
Date of release: 1999
Sep 01
Document order number:
9397 750 06265

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