Multiple voltage regulator with switch

INTEGRATED CIRCUITS DATA SHEET TDA3603 Multiple voltage regulator with switch Product specification Supersedes data of 1995 Oct 04 File under Integrated Circuits, IC01 1997 Aug 15 Philips Semiconductors Product specification Multiple voltage regulator with switch FEATURES General • One VP state controlled regulator (regulator 2) • Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown • One control pin for switching regulator 1 and the power switch • Supply voltage range of −18 to +50 V (operating from 9.75 V) • Low reverse current of regulator 2 • Low quiescent current (when regulator 1, power switch and ignition input are switched off, standby) • Ignition input/output • Reset output • High ripple rejection • Power switch. 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 shortened) • ESD protected on all pins • Thermal protection • Load dump protection • Foldback current limit protection for regulators 1 and 2 • Delayed second current limit protection for the power switch • The regulator outputs and the power switch are DC short-circuited safe to ground and VP. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TDA3603 TDA3603P SIL9MPF HDIP18 DESCRIPTION plastic single in-line medium power package with fin; 9 leads plastic heat-dissipating dual in-line package; 18 leads GENERAL DESCRIPTION TDA3603 The TDA3603 is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. It contains one fixed voltage regulator with a foldback current protection (regulator 1) and one fixed voltage regulator (regulator 2), intended to supply a microcontroller, that also operates during load dump and thermal shutdown. There is a power switch with protections, operated by the enable input. The reset and ignition outputs can be used to interface by the microcontroller. The reset signal can be used to call up the microcontroller and the ignition output indicates ignition voltage available. The supply pin can withstand load dump pulses and negative supply voltages. Regulator 2 will be switched on at a supply voltage >6.5 V and off at a voltage of regulator 2 <1.9 V. VERSION SOT110-1 SOT398-1 1997 Aug 15 2 Philips Semiconductors Product specification Multiple voltage regulator with switch QUICK REFERENCE DATA SYMBOL Supply VP supply voltage operating regulator 2 on jump start load dump protection Iq Tvj VREG1 VREG2 VREGd1 Power switch Vswd IM Notes 1. Minimum operating voltage, only if VP has exceeded 6.5 V. 2. The drop-out voltage of regulator 1 is measured between VP and REG1. 3. The drop-out voltage of the power switch is measured between VP and Vsw. drop-out voltage peak current Isw = 0.3 A; note 3 t ≤ 10 ms − 1.4 − − total quiescent current operating virtual junction temperature 0.5 mA ≤ IREG1 ≤ 300 mA 0.5 mA ≤ IREG2 ≤ 50 mA; VP = 14.4 V IREG1 = 0.3 A; note 2 note 1 t ≤ 10 minutes during 50 ms; tr ≥ 2.5 ms standby mode 9.75 2.4 − − − − 14.4 14.4 − − 400 − PARAMETER CONDITIONS MIN. TYP. TDA3603 MAX. UNIT 25 25 30 50 500 150 V V V V µA °C Voltage regulators output voltage regulator 1 output voltage regulator 2 drop-out voltage regulator 1 8.65 4.8 − 9.0 5.0 − 9.35 5.2 0.5 V V V 0.9 − V A 1997 Aug 15 3 Philips Semiconductors Product specification Multiple voltage regulator with switch BLOCK DIAGRAM TDA3603 handbook, full pagewidth VP (14.4 V) 1 POWER SWITCH 9 VSW (14.0 V/0.3 A) & TEMPERATURE LOAD DUMP PROTECTION REGULATOR 2 7 REG2 (5 V/50 mA) 4 Ven & REGULATOR 1 2 REG1 (9 V/300 mA) TDA3603 3 RES (5 V) VI(ig) 8 IGNITION BUFFER 6 ground 5 VO(ig) MBE231 Fig.1 Block diagram (for SOT110-1). 1997 Aug 15 4 Philips Semiconductors Product specification Multiple voltage regulator with switch PINNING PIN SYMBOL SOT110-1 VP REG1 RES Ven VO(ig) GND REG2 VI(ig) Vsw i.c. 1 2 3 4 5 6 7 8 9 − SOT398-1 1 2 3 4 5 6 7 8 9 10 to 18 supply voltage regulator 1 output reset output voltage (+5 V) enable input voltage ignition output voltage ground (0 V) regulator 2 output ignition input voltage power switch output voltage can be connected to a heat spreader DESCRIPTION TDA3603 handbook, halfpage handbook, halfpage VP REG1 RES V en V O(ig) GND REG2 V I(ig) Vsw 1 2 3 4 5 6 7 8 9 MBE230 VP REG1 RES V en 1 2 3 4 5 6 7 8 9 MBE229 18 17 16 15 i.c. i.c. i.c. i.c. TDA3603 V O(ig) GND REG2 V I(ig) Vsw TDA3603P 14 i.c. 13 12 11 10 i.c. i.c. i.c. i.c. Pins 10 to 18 can be connected to a heat spreader. Fig.2 Pin configuration for SOT110-1. Fig.3 Pin configuration for SOT398-1. 1997 Aug 15 5 Philips Semiconductors Product specification Multiple voltage regulator with switch FUNCTIONAL DESCRIPTION The TDA3603 is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. Because of low-voltage operation of the car radio, low-voltage drop regulators are used. Regulator 2 will switch on when the supply voltage exceeds 6.5 V for the first time and will switch off again when the output voltage of regulator 2 is below 1.9 V (this is below an engine start). When regulator 2 is switched on and the output voltage of this regulator is within its voltage range, the reset output will be enabled (reset will go HIGH via a pull-up resistor) to generate a reset to the microcontroller. The reset cycles can be extended by an external capacitor at the reset output (pin 3). The start-up feature is built-in to ensure a smooth start-up of the microcontroller at first connection, without uncontrolled switching of regulator 2 during the start-up sequence. When both regulator 2 and the supply voltage (VP > 4.5 V) are available, regulator 1 and the switch can be operated by an enable input (pin 4). TDA3603 All output pins are fully protected. The regulators are protected against load dump (regulator 1 will switch off at supply voltages higher than 25 V) and short-circuit (foldback current protection). The switch contains a current protection which is delayed for ≥10 ms (in short-circuit condition). During this time the current is limited to 1.4 A (VP ≤ 18 V). At supply voltages over 16.9 V the switch is clamped at 15.0 V (to avoid externally connected circuitry being damaged by an overvoltage) and the switch will switch off at load dump. Interfacing with the microcontroller can be accomplished by an ignition Schmitt trigger and ignition output buffer, (simple full/semi on/off logic applications). The total timing of a semi on/off logic set is shown Fig.4. 1997 Aug 15 6 Philips Semiconductors Product specification Multiple voltage regulator with switch TDA3603 handbook, full pagewidth load dump VP 6.5 V 5.4 V 4.0 V 5.0 V 1.9 V 0V 5.0 V 0V regulator 2 reset load dump 18.0 V 8.9 V 4.5 V 4.0 V 2.2 V 2.0 V 8.5 V VP enable regulator 1 regulator 1 0V ignition input 5.4 V 2.2 V 2.0 V 5.0 V 0.2 V ignition output load dump 16.9 V VP 4.5 V 4.0 V enable power switch 2.2 V 2.0 V power switch output 0V MBE235 Fig.4 Timing diagrams. 1997 Aug 15 7 Philips Semiconductors Product specification Multiple voltage regulator with switch LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP operating jump start load dump protection VP Vppi Vnpi Tstg Tvj Ptot reverse battery voltage positive pulse voltage at ignition buffer storage temperature operating virtual junction temperature total power dissipation SOT110-1 SOT398-1 THERMAL CHARACTERISTICS SYMBOL Rth j-c Rth j-p TYPE NUMBER TDA3603 TDA3603P PARAMETER thermal resistance from junction to case thermal resistance from junction to pins VALUE 12 15 − − 10.4 8.3 t ≤ 10 minutes during 50 ms; tr ≥ 2.5 ms non-operating VP = 14.4 V; RI = 1 kΩ non-operating PARAMETER supply voltage − − − − − − −55 −40 25 30 50 −18 50 −100 +150 +150 CONDITIONS MIN. TDA3603 MAX. V V V V V V UNIT negative pulse voltage at ignition buffer VP = 14.4 V; RI = 1 kΩ °C °C W W UNIT K/W K/W 1997 Aug 15 8 Philips Semiconductors Product specification Multiple voltage regulator with switch CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; see Fig.7; unless otherwise specified. SYMBOL Supply VP supply voltage operating regulator 2 on jump start load dump protection Iq quiescent current note 1 t ≤ 10 minutes during 50 ms; tr ≥ 2.5 ms VP = 12.4 V; note 2 VP = 14.4 V; note 2 Schmitt trigger power supply for the power switch Vthr Vthf Vhys Vthr Vthf Vhys Vthr Vthf Vhys Vthr Vthf Vhys Vr(REG2) Vf(REG2) Vspread Vthr Vthf Vhys Isink Ileak rising voltage threshold falling voltage threshold hysteresis 4.0 3.5 − 4.5 4.0 0.5 9.75 2.4 − − − − 14.4 14.4 − − 400 420 PARAMETER CONDITIONS MIN. TYP. TDA3603 MAX. UNIT 25 25 30 50 500 − V V V V µA µA 5.0 4.5 − V V V Schmitt trigger for regulator 1 rising voltage threshold falling voltage threshold hysteresis 4.0 3.5 − 4.5 4.0 0.5 5.0 4.5 − V V V Schmitt trigger power supply for regulator 2 rising voltage threshold falling voltage threshold hysteresis 6.0 1.7 − 6.5 1.9 4.7 7.1 2.2 − V V V Schmitt trigger for enable input rising voltage threshold falling voltage threshold hysteresis 1.7 1.5 − − − − 2.2 2.0 0.2 2.7 2.5 − V V V Schmitt trigger for reset buffer rising voltage of regulator 2 falling voltage of regulator 2 voltage spread on tracking note 3 note 3 note 4 VREG2 − 0.15 − VREG2 − 0.25 − 10 − V V mV Schmitt trigger for ignition buffer rising voltage threshold falling voltage threshold hysteresis VRES ≤ 0.8 V VP = 14.4 V; VRES = 5 V 1.7 1.5 − 2.2 2.0 0.2 2.7 2.5 − − 100 V V V Reset buffer LOW-level sink current leakage current 15 25 20 50 mA µA 1997 Aug 15 9 Philips Semiconductors Product specification Multiple voltage regulator with switch TDA3603 SYMBOL