Multiple voltage regulators with external reset delay and switch

INTEGRATED CIRCUITS DATA SHEET TDA3604Q; TDA3604TH Multiple voltage regulators with external reset delay and switch Product specification Supersedes data of 1997 Aug 15 File under Integrated Circuits, IC01 1997 Aug 21 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch FEATURES General • One VP-state controlled regulator (regulator 2) • Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown • Separate control pins 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 buffer are switched off) • Ignition input/output • Reset output • Adjustable reset delay time • High ripple rejection • Power switch • Separate supply for the 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 short-circuited) • 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 TYPE NUMBER TDA3604Q TDA3604TH PACKAGE NAME DESCRIPTION GENERAL DESCRIPTION TDA3604Q; TDA3604TH The TDA3604Q and TDA3604TH are multiple output voltage regulators 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 an 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. Both supply pins 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 SOT141-6 SOT418-2 DBS13P plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) HSOP20 plastic heat-dissipating small outline package; 20 leads; low stand-off 1997 Aug 21 2 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch QUICK REFERENCE DATA SYMBOL Supply VP supply voltage operating regulator 2 on jump start load dump protection Iq Tvj total quiescent current operating virtual junction temperature 0.5 mA ≤ IREG1 ≤ 300 mA note 1 t ≤ 10 minutes during 50 ms; tr ≥ 2.5 ms standby mode PARAMETER CONDITIONS TDA3604Q; TDA3604TH MIN. TYP. MAX. UNIT 9.75 2.4 − − − − 14.4 14.4 − − 400 − 25 25 30 50 500 150 V V V V µA °C Voltage regulators VREG1 VREG2 VREGd1 Vswd IswM 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 VREG1. 3. The drop-out voltage of the power switch is measured between VI(sw) and VO(sw). output voltage regulator 1 output voltage regulator 2 drop-out voltage regulator 1 8.65 4.8 − − 1.4 9.0 5.0 − − − 9.35 5.2 0.5 V V V 0.5 mA ≤ IREG2 ≤ 50 mA; VP = 14.4 V IREG1 = 0.3 A; note 2 Isw = 0.5 A; note 3 t ≤ 10 ms Power switch drop-out voltage peak current 1.4 − V A 1997 Aug 21 3 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch BLOCK DIAGRAM TDA3604Q; TDA3604TH handbook, full pagewidth VI(sw) (14.4 V) 2 POWER SWITCH 13 VO(sw) (13.6 V/0.5 A) Ven(sw) 7 & TEMPERATURE LOAD DUMP PROTECTION REGULATOR 2 11 REG2 (5 V/50 mA) 3 VP & 6 Ven(REG1) REGULATOR 1 4 REG1 (9 V/300 mA) TDA3604Q 5 RES (5 V) CRES VI(ig) 9 12 IGNITION BUFFER 10 ground MBE237 8 VO(ig) Fig.1 Block diagram (for DBS13P package; SOT141-6). 1997 Aug 21 4 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch PINNING PIN SYMBOL SOT141-6 n.c. VI(sw) VP REG1 RES Ven(REG1) Ven(sw) VO(ig) CRES GND REG2 VI(ig) VO(sw) 1 2 3 4 5 6 7 8 9 10 11 12 13 SOT418-2 TDA3604Q; TDA3604TH DESCRIPTION 1, 2, 6, 9, 13, 18, 19 and 20 not connected 3 4 5 7 8 10 11 12 14 15 16 17 power switch input supply voltage regulator 1 output reset output (+5 V) regulator 1 enable input power switch enable input ignition output reset delay capacitor ground (0 V) regulator 2 output ignition input power switch output handbook, halfpage n.c. Vl(sw) VP REG1 RES V en(REG1) Ven(sw) V O(ig) C RES GND REG2 V I(ig) V O(sw) 1 2 3 4 5 6 7 8 9 10 11 12 13 MBE236 handbook, halfpage n.c. 20 n.c. 19 n.c. 18 VO(sw) 17 VI(ig) 16 1 n.c. 2 n.c. 3 VI(sw) 4 VP 5 REG1 TDA3604Q TDA3604TH REG2 15 GND 14 n.c. 13 CRES 12 VO(ig) 11 MGK596 6 7 8 9 n.c. RES Ven(REG1) n.c. 10 Ven(sw) Fig.2 Pin configuration SOT141-6. Fig.3 Pin configuration SOT418-2. 1997 Aug 21 5 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch FUNCTIONAL DESCRIPTION The TDA3604Q and TDA3604TH are multiple output voltage regulators 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 drops 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 CRES (pin of the reset delay capacitor). The above mentioned start-up feature is built-in to secure a smooth start-up of the microcontroller at first connection, without uncontrolled switching of regulator 2 during the start-up sequence. TDA3604Q; TDA3604TH When both regulator 2 and the supply voltage (VP > 4.5 V) are available, regulator 1 and the power switch can be operated by the enable inputs Ven(REG1) and Ven(sw) respectively. 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 power 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 power switch is clamped at 15.0 V (to avoid externally connected circuitry being damaged by an overvoltage) and the power 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 in Fig.4. 1997 Aug 21 6 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch TDA3604Q; TDA3604TH 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 21 7 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP supply voltage operating reverse polarity jump start load dump protection Vppi Vnpi Tstg Tvj Ptot positive pulse voltage at ignition buffer negative pulse voltage at ignition buffer storage temperature operating virtual junction temperature total power dissipation non-operating t ≤ 10 minutes PARAMETER TDA3604Q; TDA3604TH CONDITIONS − − − − − − MIN. MAX. 25 −18 30 50 50 −100 +150 +150 15.6 V V V V V V UNIT during 50 ms; tr ≥ 2.5 ms VP = 14.4 V; RI = 1 kΩ VP = 14.4 V; RI = 1 kΩ non-operating −55 −40 − °C °C W 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 VALUE 8 50 UNIT K/W K/W 1997 Aug 21 8 Philips Semiconductors Product specification Multiple voltage regulators with external reset delay and switch CHARACTERISTICS VP = VI(sw) = 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 supply 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 threshold voltage falling threshold voltage hysteresis voltage PARAMETER CONDITIONS TDA3604Q; TDA3604TH MIN. TYP. MAX. UNIT 9.75 2.4 − − − − 14.4 14.4 − − 400 420 25 25 30 50 500 − V V V V µA µA 4.0 3.5 − 4.5 4.0 0.5 5.0 4.5 − V V V Schmitt trigger power supply for regulator 1 rising threshold voltage falling threshold voltage hysteresis voltage 4.0 3.5 − 4.5 4.0 0.5 5.0 4.5 − V V V Schmitt trigger for regulator 2 rising threshold voltage falling threshold voltage hysteresis voltage 6.0 1.7 − 6.5 1.9 4.7 7.1 2.2 �