INTEGRATED CIRCUITS DATA SHEET TDA3618AJR Multiple voltage regulator with switch and ignition buffers Product specification File under Integrated Circuits, IC01 2001 May 02 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR • Foldback current limit protection for regulators 1, 2 and 3 FEATURES General • Delayed second current limit protection for the power switch at short-circuit • Extremely low noise behaviour and good stability with very small output capacitors • The regulator outputs and the power switch are DC short-circuit safe to ground and VP. • Two VP-state controlled regulators and a power switch • Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown GENERAL DESCRIPTION • Separate control pins for switching regulator 1, regulator 3 and the power switch 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: • Supply voltage range from −18 to +50 V • Low reverse current of regulator 2 • 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 • 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 • A power switch with protection, 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 wake up the microcontroller • Reset (push-pull) and hold (open collector) outputs • Adjustable reset delay time • A supply pin that can withstand load dump pulses and negative supply voltages • High ripple rejection • Backup capacitor for regulator 2 • 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 • Two independent ignition buffers, one inverted and with open collector output. • 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 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) • 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 • Load dump protection ORDERING INFORMATION TYPE NUMBER TDA3618AJR 2001 May 02 PACKAGE NAME DBS17P DESCRIPTION plastic DIL-bent-SIL (specially bent) power package; 17 leads (lead length 12 mm) 2 VERSION SOT475-1 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP supply voltage Iq(tot) total quiescent supply current Tj junction temperature operating 11 14.4 18 V reverse polarity; non-operating − − −18 V regulator 2 on 2.4 14.4 50 V jump start; t ≤ 10 minutes − − 30 V load dump protection; t ≤ 50 ms; tr ≥ 2.5 ms − − 50 V standby mode − 400 500 µA − − 150 °C Voltage regulators VO(REG1) output voltage of regulator 1 1 mA ≤ IREG1 ≤ 600 mA 8.5 9.0 9.5 V 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 0.70 V ISW = 1.8 A − 1.0 1.8 V 3 − − A Power switch Vdrop drop-out voltage IM peak current 2001 May 02 3 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR BLOCK DIAGRAM handbook, full pagewidth VP 1 11 ENSW Vth(r) = 7 V, Vth(f) = 4.5 V POWER SWITCH 17 SW TEMPERATURE LOAD DUMP PROTECTION & BACK-UP SWITCH 16 BU BACK-UP CONTROL REGULATOR 2 REGULATOR 3 & 15 3 REG2 REG3 4 EN3 TDA3618AJR REGULATOR 1 & 2 REG1 10 EN1 12 ≥1 & Vreg2 9 CRES RES 13 5 IGN2IN IGNITION BUFFER 8 7 6 INVERTER IGN1IN 14 MGU332 GND Fig.1 Block diagram. 2001 May 02 HOLD 4 IGN2OUT IGN1OUT Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR 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 ignition 2 input IGN1IN 6 IGN1OUT handbook, halfpage VP 1 REG1 2 REG3 3 EN3 4 ignition 1 input IGN2IN 5 7 ignition 1 output (active LOW) IGN1IN 6 IGN2OUT 8 ignition 2 output IGN1OUT 7 RES 9 reset output (push-pull) IGN2OUT 8 EN1 10 enable input regulator 1 ENSW 11 enable input power switch HOLD 12 hold output (active LOW) CRES 13 reset delay capacitor GND 14 ground HOLD 12 REG2 15 regulator 2 output CRES 13 BU 16 backup SW 17 power switch output RES 9 TDA3618AJR EN1 10 ENSW 11 GND 14 REG2 15 BU 16 SW 17 MGU333 Fig.2 Pin configuration. 2001 May 02 5 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR The hold output 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. Pin HOLD also becomes LOW when the switch is in foldback protection mode; see Fig.4 for a timing diagram. The hold circuit block diagram is given in Fig.3. FUNCTIONAL DESCRIPTION The TDA3618AJR 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 TDA3618AJR. 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 to generate a reset to the microcontroller. The reset cycle can be extended by an external capacitor at pin CRES. 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 ENSW). 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). In the normal situation, the voltage on the reset delay capacitor is approximately 3.5 V (depending on temperature). The switch output is approximately VP − 0.4 V. At operational temperature, the switch can deliver at least 3 A. At high temperature, the switch can deliver approximately 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 to pin CRES. 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 approximately 1.5 V. When regulator 2 is out of regulation and generates a reset, the switch can only deliver 2 A and will go into 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. The output stages of regulators 1 and 3 have an extremely low noise behaviour and good stability. These regulators 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 the enable inputs (pins EN1 and EN3 respectively). Pin HOLD is normally HIGH and is active LOW. Pin HOLD 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-voltage detection circuit which, when activated, pulls the warning output LOW (enabled). The detection 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 detection circuit, such that if a regulator is disabled or switched off, the detection 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 circuit 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, pin HOLD is controlled by the battery line (pin VP), temperature protection and load dump protection. 2001 May 02 The total timing diagrams are shown in Figs 4 and 5. 6 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers handbook, full pagewidth VP TDA3618AJR low battery detector 1 Vref1 TDA3618AJR output stage Vref2 2 REG1 & enable EN1 out of regulation detector ≥1 10 REGULATOR 1 output stage 3 ≥1 enable EN3 out of regulation detector 4 REGULATOR 3 12 buffer TEMPERATURE PROTECTION >150 °C LOAD DUMP V16 FOLDBACK MODE MGU334 Fig.3 Block diagram of the hold circuit. 2001 May 02 7 REG3 HOLD Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR handbook, full pagewidth VP 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 0.2 V 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 0.2 V 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 Hold output Fig.4 Timing diagram of ignition Schmitt triggers and HOLD. 2001 May 02 8 MGR930 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers handbook, full pagewidth TDA3618AJR 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 5.0 V Backup Schmitt trigger and reset behaviour load dump 18 V VP 10.4 V 7.0 V 4.0 V >1.8 V enable regulator 1 <1.3 V 9V regulator 1 0V >1.8 V enable regulator 3 <1.3 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 >1.8 V <1.3 V 16 V power switch output 0V Power switch behaviour Fig.5 Timing diagram of regulators and power switch. 2001 May 02 9 MGK610 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL VP PARAMETER supply voltage CONDITIONS MIN. MAX. UNIT 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 non-operating −55 +150 °C Ptot total power dissipation Tstg storage temperature 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 2001 May 02 CONDITIONS in free air 10 VALUE UNIT 2 K/W 50 K/W Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; see Fig.8; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VP Iq supply voltage quiescent supply current operating 11 regulator 2 on; note 1 2.4 14.4 18 V 14.4 18 V jump start; t ≤ 10 minutes − − 30 V load dump protection; t ≤ 50 ms; tr ≥ 2.5 ms − − 50 V VP = 12.4 V; note 2 − 390 500 µA VP = 14.4 V; note 2 − 400 − µA Schmitt trigger for regulator 1, regulator 3 and the power switch Vth(r) rising threshold voltage 6.5 7.0 7.5 V Vth(f) falling threshold voltage 4.0 4.5 5.0 V Vhys hysteresis voltage − 2.5 − V Schmitt trigger for regulator 2 Vth(r) rising threshold voltage 6.0 6.5 7.1 V Vth(f) falling threshold voltage 1.7 1.9 2.3 V Vhys hysteresis voltage − 4.6 − V Schmitt trigger for enable inputs (regulator 1, regulator 3 and the power switch) Vth(r) rising threshold voltage 1.4 1.8 2.4 V Vth(f) 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 Reset trigger level of regulator 2 Vth(r) rising threshold voltage VP rising; IREG1 = 50 mA; 4.43 note 3 VO(REG2) − 0.15 VO(REG2) − 0.1 V Vth(f) falling threshold voltage VP falling; IREG1 = 50 mA; 4.4 note 3 VO(REG2) − 0.20 VO(REG2) − 0.15 V Schmitt triggers for HOLD output Vth(r)(REG1) rising threshold voltage of regulator 1 VP rising; note 3 − VO(REG1) − 0.15 VO(REG1) − 0.075 V Vth(f)(REG1) falling threshold voltage of regulator 1 VP falling; note 3 8.1 VO(REG1) − 0.35 − V − 0.2 − V Vhys(REG1) hysteresis voltage due to regulator 1 Vth(r)(REG3) rising threshold voltage of regulator 3 VP rising; note 3 − VO(REG3) − 0.15 VO(REG3) − 0.075 V Vth(f)(REG3) falling threshold voltage of regulator 3 VP falling; note 3 4.1 VO(REG3) − 0.35 − V − 0.2 − V Vhys(REG3) 2001 May 02 hysteresis voltage due to regulator 3 11 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER TDA3618AJR CONDITIONS MIN. TYP. MAX. UNIT Vth(r)(VP) rising threshold voltage of supply voltage VEN = 0 V 9.1 9.7 10.3 V Vth(f)(VP) falling threshold voltage of supply voltage VEN = 0 V 9.0 9.4 9.8 V Vhys(VP) hysteresis voltage of supply voltage VEN = 0 V − 0.3 − V 2 − − mA 0.1 5 µA 400 900 µA Reset and hold buffer Isink(L) LOW-level sink current VRES ≤ 0.8 V; VHOLD ≤ 0.8 V; VCRES < 1.0V ILO HOLD output leakage current VP = 14.4 V; VHOLD = 5 V − Isource(H) HIGH-level source current VP = 14.4V; VRES = 4.5V; 240 VCRES > 3.5V 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 Vth(r)(RES) rising voltage threshold reset signal 2.5 3.0 3.5 V td(RES) delay time reset signal 20 35 70 ms Vth(r)(SW) rising voltage threshold switch foldback protection − VO(REG2) − V td(SW) delay time switch foldback protection 8 17.6 40 ms − 1 400 mV C = 47 nF; note 5 C = 47 nF; note 6 Regulator 1 (IREG1 = 5 mA unless otherwise specified) VO(off) output voltage off VO(REG1) output voltage 1 mA ≤ IREG1 ≤ 600 mA 8.5 9.0 9.5 V 12 V ≤ VP ≤ 18 V 8.5 9.0 9.5 V ∆Vline line regulation 12 V ≤ VP ≤ 18 V − 2 75 mV ∆Vload load regulation 1 mA ≤ IREG1 ≤ 600 mA − 20 100 mV Iq quiescent current IREG1 = 600 mA − 25 60 mA SVRR supply voltage ripple rejection fi = 3 kHz; Vi(p-p) = 2 V 60 70 − dB Vdrop drop-out voltage IREG1 = 550 mA; VP = 9.5 V; note 7 − 0.4 0.7 V Ilim current limit VO(REG1) > 8.5 V; note 8 0.65 1.2 − A Isc short-circuit current RL ≤ 0.5 Ω; note 9 250 800 − mA 2001 May 02 12 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER TDA3618AJR CONDITIONS MIN. TYP. MAX. UNIT Regulator 2 (IREG2 = 5 mA unless otherwise specified) VO(REG2) ∆Vline ∆Vload output voltage line regulation load 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 1 mA ≤ IREG2 ≤ 150 mA − 20 50 mV 1 mA ≤ IREG2 ≤ 300 mA − − 100 mV SVRR supply voltage ripple rejection fi = 3 kHz; Vi(p-p) = 2 V 60 70 − dB Vdrop drop-out voltage 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 Ilim current limit VO(REG2) > 4.5 V; note 8 0.32 0.37 − A Isc 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 ∆Vline line regulation 7 V ≤ VP ≤ 18 V − 2 50 mV ∆Vload load regulation 1 mA ≤ IREG3 ≤ 750 mA − 20 100 mV Iq quiescent current IREG3 = 750 mA − 19 45 mA SVRR supply voltage ripple rejection fi = 3 kHz; Vi(p-p) = 2 V 60 70 − dB Vdrop drop-out voltage IREG3 = 500 mA; VP = 5.75 V; note 7 − 1 1.5 V Ilim current limit VO(REG3) > 4.5 V; note 8 0.80 0.90 − A Isc 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 Vdrop 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 2001 May 02 13 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER TDA3618AJR CONDITIONS IM peak current VP = 17 V; notes 6, 12, 13 Vfb flyback voltage behaviour ISW = −100 mA Isc short-circuit current VP = 14.4 V; VSW < 1.2 V; note 13 MIN. TYP. MAX. UNIT − − A − VP + 3 22 V − 0.8 − A 3 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 Vth(r) rising threshold voltage of ignition 1 input 2.75 3.25 3.75 V Vth(f) 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 0 0.2 0.8 V Schmitt trigger for power supply of ignition 1 Vth(r) rising threshold voltage Vth(f) falling threshold voltage Ignition 1 buffer VOL LOW-level output voltage IIGN1OUT = 0 mA VOH HIGH-level output voltage IIGN1OUT = 0 mA 4.5 5.0 5.25 V 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 VIGN1IN falling from time 3.75 to 0.8 V − − 500 µs tPHL HIGH-to-LOW propagation time − − 500 µs VIGN1IN rising from 0.8 to 3.75 V Schmitt trigger for enable input of ignition 2 Vth(r) rising threshold voltage of ignition 2 input VP > 3.5 V 1.9 2.2 2.5 V Vth(f) falling threshold voltage of ignition 2 input VP > 3.5 V 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 2001 May 02 14 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers SYMBOL PARAMETER TDA3618AJR CONDITIONS MIN. TYP. MAX. UNIT VIH(clamp) HIGH-level input clamping voltage VP − 50 V VIL(clamp) LOW-level input clamping voltage −0.6 − 0 V 0 0.2 0.8 V Ignition 2 buffer VOL LOW-level output voltage IIGN2OUT = 0 mA 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 = 5 V − − 1.0 µA tPLH LOW-to-HIGH propagation VIGN2IN rising from time 1.7 to 2.5 V − − 500 µs tPHL HIGH-to-LOW propagation time − − 500 µs VIGN2IN falling from 2.5 to 1.7 V Notes 1. Minimum operating voltage, only if VP has exceeded 6.5 V. 2. The quiescent current is measured in the standby mode with pins EN1, EN2 and ENSW connected to ground 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. 5. The delay time depends on the value of the capacitor connected to pin CRES: C 3 t d(RES) = ------- × V th(r)(RES) = C × ( 750 × 10 ) [s] I ch 6. The delay time depends on the value of the capacitor connected to pin CRES: C 3 t d(RES) = ------- × ( V O(REG2) – 3.5 ) = C × ( 375 × 10 ) [s] I ch 7. The drop-out voltage of regulators 1, 2 and 3 is measured between pins VP and REGn. 8. At current limit, Ilim is held constant (see Fig.6 for the behaviour of Ilim). 9. The foldback current protection limits the dissipated power at short-circuit (see Fig.6). 10. The drop-out voltage is measured between pins BU and REG2. 11. The drop-out voltage of the power switch is measured between pins 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 VIGN1IN > 1.2 V or VEN1 > 1.3 V or VEN3 > 1.3 V or VENSW > 1.3 V. 2001 May 02 15 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR handbook, halfpage MBK946 9.0 VO(REG1) (V) Isc Ilim IREG1 (A) a. Regulator 1. handbook, halfpage handbook, halfpage VO(REG2) VO(REG3) (V) (V) MGL598 5.0 MGL599 5.0 Isc Ilim Isc IREG2 (A) b. Regulator 2. c. Regulator 3. Fig.6 Foldback current protection of the regulators. handbook, full pagewidth MGU349 VSW (V) VP − 3.3 delayed generates hold not delayed 2VBE >1.8 1 >3 ISW (A) Fig.7 Current protection of the power switch. 2001 May 02 IREG3 (A) 16 Ilim Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR TEST AND APPLICATION INFORMATION Test information handbook, full pagewidth VP VP 17 1 SW C2 220 nF C1 220 nF ENSW 15 11 RL(SW) 12 kΩ 5V REG2 C3 10 µF VENSW EN1 10 2 REG1 RL(REG2) 5 kΩ 10 V C4 10 µF VEN1 EN3 REG3 4 RL(REG1) 10 kΩ 5V 3 C5 10 µF VEN3 RL(REG3) 5 kΩ TDA3618AJR CRES 13 C7 47 nF 9 RES C6 1 µF BU VBU 12 C8 IGN1IN R5 VIGN1 10 kΩ 10 kΩ 6 7 5 8 HOLD IGN1OUT C9 1 nF R6 VIGN2 16 IGN2IN C10 1 nF IGN2OUT 14 ground MGU335 Fig.8 Test circuit. 2001 May 02 17 R3 10 kΩ R4 10 kΩ Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR 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 1 170 130 110 2 180 120 100 3 100 70 65 Example 1 Regulators 1 and 3 are stabilized with an electrolytic output capacitor of 220 µF (ESR = 0.15 Ω). At Tamb = −30 °C, the capacitor value is decreased to 73 µF and the ESR is increased to 1.1 Ω. The regulator remains stable at Tamb = −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 Tamb = −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 unstable at Tamb = −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 handbook, halfpage R (Ω) R (Ω) 15 MGK613 14 maximum ESR 12 10 maximum ESR 8 10 stable region 6 5 4 stable region 2 0 0 0.1 Fig.9 1 10 C (µF) 100 0.22 Curve for selecting the value of output capacitor for regulators 1 and 3. 2001 May 02 minimum ESR 1 10 C (µF) 100 Fig.10 Curve for selecting the value of output capacitor for regulator 2. 18 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR 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 4.4 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 99-12-17 SOT475-1 2001 May 02 EUROPEAN PROJECTION 19 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR 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. 2001 May 02 20 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR DATA SHEET STATUS DATA SHEET STATUS(1) PRODUCT STATUS(2) DEFINITIONS Objective data Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. Preliminary data Qualification This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. Product data Production This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notification (CPCN) procedure SNW-SQ-650A. Notes 1. Please consult the most recently issued data sheet before initiating or completing a design. 2. The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. DEFINITIONS DISCLAIMERS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. 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 Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). 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. Right to make changes Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. 2001 May 02 21 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR NOTES 2001 May 02 22 Philips Semiconductors Product specification Multiple voltage regulator with switch and ignition buffers TDA3618AJR NOTES 2001 May 02 23 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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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 403502/01/pp24 Date of release: 2001 May 02 Document order number: 9397 750 08068