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 TDA3618JR FEATURES • Load dump protection General • Foldback current limit protection for regulators 1, 2 and 3 • Extremely low noise behaviour and good stability with very small output capacitors • Delayed second current limit protection for the power switch (at short circuit) • Two VP-state controlled regulators (regulators 1 and 3) and a power switch • The regulator outputs and the power switch are DC short circuited safe to ground and VP. • Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown GENERAL DESCRIPTION • Separate control pins for switching regulators (regulators 1 and 3) and the power switch 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: • Supply voltage range of −18 to +50 V • Low reverse current of regulator 2 • 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 • 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 • A power switch with protections, operated by an enable input • Hold output for foldback mode switch • Hold output for load dump and temperature protection • Reset and hold outputs that can be used to interface with the microcontroller. The reset signal can be used to call up the microcontroller. • Reset and hold outputs (open collector outputs) • Adjustable reset delay time • High ripple rejection • A supply pin which can withstand load dump pulses and negative supply voltages • backup capacitor for regulator 2 • Two independent ignition buffers (one inverted and with open collector output). • 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 Protections • Reverse polarity safe (down to −18 V without high reverse current) • 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 • Able to withstand voltages up to 18 V at the outputs (supply line may be short circuited) • An inverted ignition 1 input with open collector output stage • ESD protected on all pins • An ignition 2 input Schmitt trigger with push-pull output stage. • Thermal protections with hysteresis ORDERING INFORMATION TYPE NUMBER TDA3618JR 1999 Sep 01 PACKAGE NAME DBS17P DESCRIPTION plastic DIL-bent-SIL (specially bent) power package; 17 leads (lead length 12 mm) 2 VERSION SOT475-1 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP supply voltage operating reverse polarity non-operating regulator 2 on jump start load dump protection Iq(tot) total quiescent supply current Tj junction temperature t ≤ 10 minutes 11 14.4 18 V − − 18 V 2.4 14.4 50 V − − 30 V t ≤ 50 ms; tr ≥ 2.5 ms − − 50 V standby mode − 310 400 µA − − 150 °C 8.5 9.0 9.5 V Voltage regulators VO(REG1) output voltage of regulator 1 1 mA ≤ IREG1 ≤ 600 mA VO(REG2) output voltage of regulator 2 0.5 mA ≤ IREG2 ≤ 150 mA; VP = 14.4 V 4.75 5.0 5.25 V VO(REG3) output voltage of regulator 3 1 mA ≤ IREG3 ≤ 750 mA 4.75 5.0 5.25 V ISW = 1 A − 0.45 0.7 V ISW = 1.8 A − 1 1.8 V 3 − − A Power switch Vd IM drop-out voltage peak current 1999 Sep 01 3 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR BLOCK DIAGRAM handbook, full pagewidth VP ENSW (14.4 V) 1 11 Vthr = 7 V, Vthf = 4.5 V POWER SWITCH 17 (14.2 V/3 A) 16 (14.2 V/100 mA) 15 (5 V/150 mA) 3 (5 V/750 mA) 2 (9 V/600 mA) SW TEMPERATURE LOAD DUMP PROTECTION & BACK-UP SWITCH BU BACK-UP CONTROL REGULATOR 2 REGULATOR 3 & REG2 REG3 4 EN3 TDA3618JR REGULATOR 1 & REG1 10 EN1 12 ≥1 CRES & 9 5 IGNITION BUFFER 8 7 6 INVERTER 14 GND Fig.1 Block diagram. 1999 Sep 01 RES 13 IGN2IN IGN1IN HOLD 4 MGR928 IGN2OUT IGN1OUT Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR PINNING SYMBOL PIN DESCRIPTION VP 1 supply voltage REG1 2 regulator 1 output REG3 3 regulator 3 output EN3 4 enable input regulator 3 IGN2IN 5 IGN1IN handbook, halfpage VP 1 REG1 2 REG3 3 ignition 2 input EN3 4 6 ignition 1 input IGN2IN 5 IGN1IN 6 IGN1OUT 7 IGN2OUT 8 9 IGN1OUT 7 ignition 1 output (active LOW) IGN2OUT 8 ignition 2 output RES 9 reset output EN1 10 enable input regulator 1 ENSW 11 enable input power switch RES HOLD 12 hold output (active LOW) EN1 10 CRES 13 reset delay capacitor ENSW 11 GND 14 ground HOLD 12 REG2 15 regulator 2 output BU 16 backup SW 17 power switch output TDA3618JR CRES 13 GND 14 REG2 15 BU 16 SW 17 MGR929 Fig.2 Pin configuration. 1999 Sep 01 5 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers 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. 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 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). 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. 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 µA 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. 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. 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 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. 1999 Sep 01 TDA3618JR The total timing diagrams are shown in Figs 4 and 5. 6 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers handbook, full pagewidth VP TDA3618JR low battery detector 1 internal voltage ref. 1 internal voltage ref. 2 TDA3618JR output stage 2 REG1 & enable EN1 out of regulation detector 10 OR REGULATOR 1 output stage 3 OR enable EN3 out of regulation detector 4 REGULATOR 3 12 buffer TEMPERATURE PROTECTION >150 °C LOADDUMP V16 FOLDBACK MODE MGL792 Fig.3 Block diagram of the HOLD. 1999 Sep 01 7 REG3 HOLD Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers handbook, full pagewidth VP TDA3618JR load dump 7.0 V 4.5 V ≤50 V ignition 1 ≥3.25 V input ≤1.1 V ≥−100 V 5.0 V ignition 1 output Enable Schmitt trigger ignition 1 load dump VP ≤50 V ≥2.2 V ignition 2 input ≤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 handbook, full pagewidth TDA3618JR load dump VP VBU 6.5 V 5.4 V regulator 2 5.0 V 1.9 V 0V reset delay capacitor 5.0 V 3.0 V 0V reset 6.0 V Back-up Schmitt trigger and reset behaviour load dump 18 V VP 10.4 V 7.0 V 4.0 V ≥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 ≥2.2 V ≤2.0 V 16 V power switch output 0V Power switch behaviour Fig.5 Timing diagram of regulators and power switch. 1999 Sep 01 9 MGK610 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP PARAMETER CONDITIONS MIN. MAX. UNIT supply voltage operating − 18 V reverse polarity non-operating − 18 V jump start t ≤ 10 minutes − 30 V load dump protection t ≤ 50 ms; tr ≥ 2.5 ms − 50 V − 62 W Ptot total power dissipation Tstg storage temperature non-operating −55 +150 °C Tamb ambient temperature operating −40 +85 °C Tj junction temperature operating −40 +150 °C THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth(j-c) thermal resistance from junction to case Rth(j-a) thermal resistance from junction to ambient 1999 Sep 01 CONDITIONS in free air 10 VALUE UNIT 2 K/W 50 K/W Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; see Fig.8; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VP supply voltage operating Iq 11 14.4 18 V regulator 2 on note 1 2.4 14.4 18 V jump start t ≤ 10 minutes − − 30 V load dump protection t ≤ 50 ms; tr ≥ 2.5 ms − − 50 V quiescent supply current VP = 12.4 V; note 2; IREG2 = 0.1 mA − 310 400 µA VP = 14.4 V; note 2; IREG2 = 0.1 mA − 315 − µA Schmitt trigger for power supply of switch, regulators 1 and 3 Vthr rising threshold voltage 6.5 7.0 7.5 V Vthf falling threshold voltage 4.0 4.5 5.0 V Vhys hysteresis voltage − 2.5 − V 7.1 V Schmitt trigger for regulator 2 Vthr rising threshold voltage 6.0 6.5 Vthf falling threshold voltage 1.7 1.9 2.3 V Vhys hysteresis voltage − 4.6 − V Schmitt trigger for enable input (regulators 1, 3 and switch) Vthr rising threshold voltage 1.4 1.8 2.4 V Vthf falling threshold voltage 0.9 1.3 1.9 V Vhys hysteresis voltage IREG = ISW = 1 mA − 0.5 − V ILI input leakage current Ven = 5 V 1 5 10 µA VP rising; IREG1 = 50 mA; note 3 4.5 VREG2 − 0.15 VREG2 − 0.1 V VP rising; note 3 − VREG1 − 0.15 VREG1 − 0.075 V Reset trigger level of regulator 2 Vthr rising threshold voltage Schmitt triggers for HOLD output Vthr1 rising threshold voltage of regulator 1 Vthf1 falling threshold voltage of VP falling; note 3 regulator 1 8.1 VREG1 − 0.35 − V Vhys1 hysteresis voltage due to regulator 1 − 0.2 − V Vthr3 rising threshold voltage of regulator 3 − VREG3 − 0.15 VREG3 − 0.075 V Vthf3 falling threshold voltage of VP falling; note 3 regulator 3 4.1 VREG3 − 0.35 − V Vhys3 hysteresis voltage due to regulator 3 − 0.2 − V 1999 Sep 01 VP rising; note 3 11 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER CONDITIONS TDA3618JR MIN. TYP. MAX. UNIT Vthr(VP) rising threshold voltage of supply voltage Ven = 0 V 9.1 9.7 10.3 V Vthf(VP) falling threshold voltage of Ven = 0 V supply voltage 9.0 9.4 9.8 V Vhys hysteresis voltage of supply voltage Ven = 0 V − 0.3 − V Reset and hold buffer IsinkL LOW-level sink current VRES/HOLD ≤ 0.8 V 2 − − mA ILO output leakage current VP = 14.4 V; VRES/HOLD = 5 V − 0.1 5 µA tr rise time note 4 − 7 50 µs tf fall time note 4 − 1 50 µs Reset delay Ich charge current 2 4 8 µA Idch discharge current 500 800 − µA Vthr(RES) rising voltage threshold reset signal 2.5 3.0 3.5 V td(RES) delay time reset signal 20 35 70 ms Vthr(SW) rising voltage threshold switch foldback protection − VREG2 − V td(SW) delay time switch foldback C = 47 nF; note 6 protection 8 17.6 40 ms − 1 400 mV 1 mA ≤ IREG1 ≤ 600 mA 8.5 9.0 9.5 V C = 47 nF; note 5 Regulator 1 (IREG1 = 5 mA; unless otherwise specified) VO(off) output voltage off VO(REG1) output voltage 12 V ≤ VP ≤ 18 V 8.5 9.0 9.5 V ∆V line regulation 12 V ≤ VP ≤ 18 V − 2 75 mV ∆VL load regulation 1 mA ≤ IREG1 ≤ 600 mA − 20 100 mV Iq quiescent current IR1 = 600 mA − 25 60 mA SVRR supply voltage ripple rejection fi = 3 kHz; Vi(p-p) = 2 V 60 70 − dB Vd drop-out voltage IREG1 = 550 mA; VP = 9.5 V; note 7 − 0.4 0.7 V IREG1m current limit VREG1 > 8.5 V; note 8 0.65 1.2 − A IREG1sc short-circuit current RL ≤ 0.5 Ω; note 9 250 800 − mA Regulator 2 (IREG2 = 5 mA; unless otherwise specified) VO(REG2) ∆V 1999 Sep 01 output voltage line regulation 0.5 mA ≤ IREG2 ≤ 300 mA 4.75 5.0 5.25 V 8 V ≤ VP ≤ 18 V 4.75 5.0 5.25 V 18 V ≤ VP ≤ 50 V; IREG2 ≤ 150 mA 4.75 5.0 5.25 V 6 V ≤ VP ≤ 18 V − 2 50 mV 6 V ≤ VP ≤ 50 V − 15 75 mV 12 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER ∆VL load regulation SVRR supply voltage ripple rejection Vd drop-out voltage CONDITIONS TDA3618JR MIN. TYP. MAX. UNIT 1 mA ≤ IREG2 ≤ 150 mA − 20 50 mV 1 mA ≤ IREG2 ≤ 300 mA − − 100 mV f = 3 kHz; Vi(p-p) = 2 V 60 70 − dB IREG2 = 100 mA; VP = 4.75 V; note 7 − 0.4 0.6 V IREG2 = 200 mA; VP = 5.75 V; note 7 − 0.8 1.2 V IREG2 = 100 mA; Vbu = 4.75 V; note 10 − 0.2 0.5 V IREG2 = 200 mA; Vbu = 5.75 V; note 10 − 0.8 1.0 V IREG2m current limit VREG2 > 4.5 V; note 8 0.32 0.37 − A IREG2sc short-circuit current RL ≤ 0.5 Ω; note 9 20 100 − mA Regulator 3 (IREG3 = 5 mA; unless otherwise specified) VO(off) output voltage off VO(REG3) output voltage − 1 400 mV 1 mA ≤ IREG3 ≤ 750 mA 4.75 5.0 5.25 V 7 V ≤ VP ≤ 18 V 4.75 5.0 5.25 V ∆V line regulation 7 V ≤ VP ≤ 18 V − 2 50 mV ∆VL load regulation 1 mA ≤ IREG3 ≤ 750 mA − 20 100 mV Iq quiescent current IR3 = 750 mA − 19 45 mA SVRR supply voltage ripple rejection fi = 3 kHz; Vi(p-p) = 2 V 60 70 − dB Vd drop-out voltage IREG3 = 500 mA; VP = 5.75 V; note 7 − 1 1.5 V IREG3m current limit VREG3 > 4.5 V; note 8 0.80 0.90 − A IREG3sc short-circuit current RL ≤ 0.5 Ω; note 9 100 400 − mA ISW = 1 A; VP = 13.5 V; note 11 − 0.45 0.70 V ISW = 1.8 A; VP = 13.5 V; note 11 − 1.0 1.8 V Power switch Vd drop-out voltage Idc continuous current VP = 16 V; VSW = 13.5 V 1.8 2.0 − A Vclamp clamping voltage VP ≥ 17 V 13.5 15.0 16.0 V IM peak current VP = 17 V; notes 6, 12, 13 3 − − A Vfb fly back voltage behaviour ISW = −100 mA − VP + 3 22 V Isc short-circuit current − 0.8 − A 1999 Sep 01 VP = 14.4 V; VSW < 1.2 V; note 13 13 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER CONDITIONS TDA3618JR MIN. TYP. MAX. UNIT backup switch Idc continuous current 0.3 0.35 − A Vclamp clamping voltage VP ≥ 16.7 V − − 16 V Ir reverse current VP = 0 V; Vbu = 12.4 V − − 900 µA Schmitt trigger for enable input of ignition 1 Vthr rising threshold voltage of ignition 1 input 2.75 3.25 3.75 V Vthf falling threshold voltage of ignition 1 input 0.8 − 1.3 V Vhys hysteresis voltage 1.5 − − V ILI input leakage current VIGN1IN = 5 V − − 1.0 µA II(clamp) input clamping current VIGN1IN > 50 V − − 50 mA VIH(clamp) HIGH-level input clamping voltage VP − 50 V VIL(clamp) LOW-level input clamping voltage −0.6 − 0 V 6.5 7.0 7.5 V note 14 4.0 4.5 5.0 V IIGN1OUT = 0 mA 0 0.2 0.8 V Schmitt trigger for power supply of ignition 1 Vthr rising threshold voltage Vthf falling threshold voltage Ignition 1 buffer VOL LOW-level output voltage IOL LOW-level output current VIGN1OUT ≤ 0.8 V 0.45 0.8 − mA ILO output leakage current VIGN1OUT = 5 V; VIGN1IN = 0 V − − 1.0 µA tPLH LOW-to-HIGH propagation time VIGN1IN rising from 0.8 to 3.75 V − − 500 µs tPHL HIGH-to-LOW propagation time VIGN1IN falling from 3.75 to 0.8 V − − 500 µs Schmitt trigger for enable input of ignition 2 Vthr rising threshold voltage of ignition 2 input VP > 3.5 V 1.9 2.2 2.5 V Vthf falling threshold voltage of VP > 3.5 V ignition 2 input 1.7 2.0 2.3 V Vhys hysteresis voltage VP > 3.5 V 0.1 0.2 0.5 V ILI input leakage current VIGN2IN = 5 V − − 1.0 µA II(clamp) input clamp current VIGN2IN > 50 V − − 50 mA VIH(clamp) HIGH-level input clamping voltage VP − 50 V VIL(clamp) LOW-level input clamping voltage −0.6 − 0 V 1999 Sep 01 14 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER CONDITIONS TDA3618JR MIN. TYP. MAX. UNIT Ignition 2 buffer VOL LOW-level output voltage IIGN2OUT = 0 mA 0 0.2 0.8 V VOH HIGH-level output voltage IIGN2OUT = 0 mA 4.5 5.0 5.25 V IOL LOW-level output current VIGN2OUT ≤ 0.8 V 0.45 0.8 − mA IOH HIGH-level output current VIGN2OUT ≥ 4.5 V −0.45 −2.0 − mA ILO output leakage current (source) VIGN2OUT = 5 V; VIGN2IN = 0 V − − 1.0 µA tPLH LOW-to-HIGH propagation time VIGN2IN rising from 1.7 to 2.5 V − − 500 µs tPHL HIGH-to-LOW propagation time VIGN2IN falling from 2.5 to 1.7 V − − 500 µs Notes 1. Minimum operating voltage, only if VP has exceeded 6.5 V. 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 kΩ pull-up resistor and a 50 pF load capacitor. C 3 t d = ------ × V C(th) = C × ( 750 × 10 ) [ s ] I ch 5. The delay time depends on the value of the capacitor: 6. The delay time depends on the value of the reset delay capacitor: C 3 t d_high current = ------- × V C ( th ) = C × ( 375 × 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 TDA3618JR MBK946 9V handbook, halfpage VO(REG2) MGL598 VO(REG1) 5.0 V IREG1sc IREG2sc IREG1m IREG2m IREG2 IREG1 a. Regulator 1. handbook, halfpage VO(REG3) MGL599 5.0 V IREG3m IREG3sc IREG3 b. Regulator 2. Fig.6 Foldback current protection of the regulators. handbook, full pagewidth MGR931 Vsw VP − 3.3 V delayed generates hold not delayed 2VBE >1.8 A 1A >3 A Isw Fig.7 Current protection of the power switch. 1999 Sep 01 16 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR TEST AND APPLICATION INFORMATION Test information handbook, full pagewidth power switch output supply voltage 17 1 VP C2 220 nF C1 220 nF enable input power switch 15 11 regulator 2 output RL(SW) 12 kΩ 5V C3 10 µF VENSW enable input regulator 1 10 2 regulator 1 output RL(REG2) 5 kΩ 10 V C4 10 µF VEN1 regulator 3 output enable input regulator 3 4 RL(REG1) 10 kΩ 5V 3 C5 10 µF VEN3 reset delay capacitor RL(REG3) 5 kΩ TDA3618JR 13 C7 47 nF 9 reset output R2 10 kΩ C6 1 µF back-up Vbu 10 kΩ ignition 1 input ignition 1 output 6 7 C9 1 nF ignition 2 input R6 5 VIGN2 10 kΩ C10 1 nF 8 ignition 2 output 14 ground MGR932 Fig.8 Test circuit. 1999 Sep 01 R3 10 kΩ 12 C8 R5 VIGN1 hold output 16 17 R4 10 kΩ Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers Application information 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. NOISE Table 1 Noise figures NOISE FIGURE (µV)(1) REGULATOR Co = 10 µF Co = 47 µF Co = 100 µF 1 tbf 150 tbf 2 tbf 150 tbf 3 tbf 200 tbf Example 1 Regulators 1 and 3 are stabilized with an electrolytic output capacitor of 220 µF (ESR = 0.15 Ω). At −30 °C, the capacitor value is decreased to 73 µF and the ESR is increased to 1.1 Ω. The regulator remains stable at −30 °C. Note 1. Measured at a bandwidth of 200 kHz. Example 2 Regulator 2 is stabilized with a 10 µF electrolytic capacitor (ESR = 3 Ω). At −30 °C, the capacitor value is decreased to 3 µF and the ESR is increased to 23.1 Ω. Using Fig.10, the regulator will be instable at −30 °C. 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 µF is connected directly to pins 1 and 14 (supply and ground), the noise is minimal. Solution To avoid problems with stability at low temperatures, the use of tantalum capacitors is recommended. Use a tantalum capacitor of 10 µF or a larger electrolytic capacitor. STABILITY The regulators are stabilized with the externally connected output capacitors. MGK612 handbook, halfpage 20 TDA3618JR handbook, halfpage R (Ω) R (Ω) MGK613 14 maximum ESR 12 15 10 maximum ESR 8 10 stable region 6 5 4 stable region 2 0 0.1 Fig.9 1 10 C (µF) 0 100 0.22 Curve for selecting the value of output capacitor for regulators 1 and 3. 1999 Sep 01 minimum ESR 1 10 C (µF) 100 Fig.10 Curve for selecting the value of output capacitor for regulator 2. 18 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR PACKAGE OUTLINE DBS17P: plastic DIL-bent-SIL (special bent) power package; 17 leads (lead length 12 mm) SOT475-1 non-concave Dh x D Eh view B: mounting base side d A2 B j E A L3 L 1 Q 17 e1 Z bp e c w M 0 5 v M e2 m 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A2 bp c D (1) d Dh E (1) e mm 17.0 15.5 4.6 4.2 0.75 0.60 0.48 0.38 24.0 23.6 20.0 19.6 10 12.2 11.8 2.54 e1 e2 1.27 5.08 Eh j L L3 m Q v w x Z (1) 6 3.4 3.1 12.4 11.0 2.4 1.6 4.3 2.1 1.8 0.8 0.4 0.03 2.00 1.45 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 97-05-20 SOT475-1 1999 Sep 01 EUROPEAN PROJECTION 19 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers TDA3618JR The total contact time of successive solder waves must not exceed 5 seconds. SOLDERING Introduction to soldering through-hole mount packages 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. 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. 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. 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. Suitability of through-hole mount IC packages for dipping and wave soldering methods SOLDERING METHOD PACKAGE DIPPING DBS, DIP, HDIP, SDIP, SIL WAVE suitable(1) suitable 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 This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. 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. 1999 Sep 01 20 Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers NOTES 1999 Sep 01 21 TDA3618JR Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers NOTES 1999 Sep 01 22 TDA3618JR Philips Semiconductors Preliminary specification Multiple voltage regulator with switch and ignition buffers NOTES 1999 Sep 01 23 TDA3618JR Philips Semiconductors – a worldwide company Argentina: see South America Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140, Tel. +61 2 9704 8141, Fax. +61 2 9704 8139 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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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