Multiple voltage regulator with battery detection

INTEGRATED CIRCUITS DATA SHEET TDA3606A Multiple voltage regulator with battery detection Product specification Supersedes data of 1997 Aug 12 File under Integrated Circuits, IC01 1998 May 07 Philips Semiconductors Product specification Multiple voltage regulator with battery detection FEATURES • One VP-state controlled regulator • Regulator and reset outputs operate during load dump • Supply voltage range of −18 to +50 V • Low quiescent current (battery detection switched off) • High ripple rejection • Dual reset output. PROTECTIONS • Reverse polarity safe (down to −18 V without high reverse current) • Able to withstand voltages up to 18 V at the output (supply line may be short-circuited) • ESD protected on all pins • Load dump protection • Foldback current limit protection for regulator • DC short-circuit safe to ground and VP of regulator output. QUICK REFERENCE DATA SYMBOL Supplies VP supply voltage operating jump start load dump protection Iq(tot) VREG VREGd total quiescent supply current Voltage regulator output voltage regulator drop-out voltage 7 V ≤ VP ≤ 18 V 0.5 mA ≤ IREG ≤ 150 mA IREG = 150 mA 4.85 4.8 − 5.0 5.0 − regulator on t ≤ 10 minutes t ≤ 50 ms; tr ≥ 2.5 ms standby mode 5.6 − − − 14.4 − − 95 PARAMETER CONDITIONS MIN. TYP. GENERAL DESCRIPTION TDA3606A The TDA3606A is a low power voltage regulator. It contains: 1. One fixed voltage regulator with a foldback current protection, intended to supply a microprocessor, that also operates during load dump 2. A reset-signal can be used to interface with the microprocessor 3. Supply pin can withstand load dump pulses and negative supply voltages 4. Defined start-up behaviour; regulator will be switched on at a supply voltage higher than 7.6 V and off when the output voltage of the regulator drops below 2.4 V. MAX. UNIT 25 30 50 120 V V V µA 5.15 5.2 0.5 V V V ORDERING INFORMATION TYPE NUMBER TDA3606AT PACKAGE NAME SO20 DESCRIPTION plastic small outline package; 20 leads; body width 7.5 mm VERSION SOT163-1 1998 May 07 2 Philips Semiconductors Product specification Multiple voltage regulator with battery detection BLOCK DIAGRAM TDA3606A handbook, full pagewidth VP (14.4 V) 17 LOAD DUMP PROTECTION 16 REGULATOR (5 V/150 mA) REG REFERENCE 4.7 kΩ 14 RES2 & VC 6 4.7 kΩ 15 RES1 TDA3606A REG 4 VI(bat) 7 GND n.c. BATTERY BUFFER 1 to 3, 8 to 13, 18 to 20 MGK597 5 VO(bat) Fig.1 Block diagram. PINNING SYMBOL n.c. VI(bat) VO(bat) VC GND n.c. RES2 RES1 REG VP n.c. PIN 1 to 3 4 5 6 7 8 to 13 14 15 16 17 18 to 20 DESCRIPTION not connected; heat spreader battery input voltage battery detection output voltage reset delay capacitor ground (0 V) not connected; heat spreader reset 2 output reset 1 output regulator output supply voltage not connected; heat spreader VI(bat) 4 VO(bat) 5 VC 6 GND 7 n.c. 8 n.c. 9 n.c. 10 MGK600 handbook, halfpage n.c. 1 n.c. 2 n.c. 3 20 n.c. 19 n.c. 18 n.c. 17 VP 16 REG TDA3606AT 15 RES1 14 RES2 13 n.c. 12 n.c. 11 n.c. Fig.2 Pin configuration. 1998 May 07 3 Philips Semiconductors Product specification Multiple voltage regulator with battery detection FUNCTIONAL DESCRIPTION The TDA3606A is a voltage regulator intended to supply a microprocessor (e.g. in car radio applications). Because of low voltage operation of the application, a low-voltage drop regulator is used in the TDA3606A. This regulator will switch on when the supply voltage exceeds 7.6 V for the first time and will switch off again when the output voltage of the regulator drops below 2.4 V. When the regulator is switched on, the RES1 and RES2 outputs (RES2 can only be HIGH when RES1 is HIGH) will go HIGH after a fixed delay time (fixed by an external delay capacitor) to generate a reset to the microprocessor. TDA3606A RES1 will go HIGH by an internal pull-up resistor of 4.7 kΩ, and is used to initialize the microprocessor. RES2 is used to indicate that the regulator output voltage is within its voltage range. This start-up feature is built-in to secure a smooth start-up of the microprocessor at first connection, without uncontrolled switching of the regulator during the start-up sequence. All output pins are fully protected. The regulator is protected against load dump and short-circuit (foldback current protection). Interfacing with the microprocessor can be accomplished by means of a battery Schmitt-trigger and output buffer (simple full/semi on/off logic applications). The battery output will go HIGH when the battery input voltage exceeds the HIGH threshold level. handbook, full pagewidth 50 V VP 4.35 V regulator 4.35 V 2.4 V reset 1 reset 2 reset delay capacitor on/off switch 2V 2V battery input 2.1 V 2V battery output MGB857 Fig.3 Timing diagrams. 1998 May 07 4 Philips Semiconductors Product specification Multiple voltage regulator with battery detection LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP operating jump start load dump protection VP VI(bat)p VI(bat)n Ptot Tstg Tamb Tj reverse battery voltage positive pulse voltage at battery input negative pulse voltage at battery input total power dissipation storage temperature operating ambient temperature junction temperature operating PARAMETER supply voltage regulator on t ≤ 10 minutes t ≤ 50 ms; tr ≥ 2.5 ms non-operating VP = 14.4 V; RI = 5 kΩ VP = 14.4 V; RI = 5 kΩ Tamb = 25 °C non-operating − − − − − − − −55 −40 −40 25 30 50 CONDITIONS MIN. TDA3606A MAX. V V V V V V W UNIT −18 50 −100 2.5 +150 +85 +150 °C °C °C THERMAL CHARACTERISTICS SYMBOL Rth (j-p) Rth (j-a) PARAMETER thermal resistance from junction to pins thermal resistance from junction to ambient in free air; note 1 in free air; note 2 CONDITIONS VALUE 20 50 60 UNIT K/W K/W K/W Notes 1. On IMS board. 2. On standard board with double sided copper area connected to pins. QUALITY SPECIFICATION In accordance with “SNW-FQ-611E”. The number of the quality specification can be found in the “Quality Reference Handbook”. The handbook can be ordered using the code 9397 750 00192. 1998 May 07 5 Philips Semiconductors Product specification Multiple voltage regulator with battery detection CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; see Fig.5; unless otherwise specified. SYMBOL Supplies VP supply voltage operating jump start load dump protection Iq quiescent current regulator on; note 1 t ≤ 10 minutes t ≤ 50 ms, tr ≥ 2.5 ms VP = 12.4 V; note 2 VP = 14.4 V; note 2 load dump; VP = 50 V Schmitt-trigger for regulator and reset 1 Vthr Vthf Vhys Vthr Vthf Vhys Vthr Vthf Vhys Isink Rpu Reset delay Io Vthr td Battery buffer VOL VOH IOL IOH LOW-level output voltage HIGH-level output voltage LOW-level output current HIGH-level output current II = 0 mA Io = 5 µA; note 5 VOL ≤ 0.8 V VOH ≥ 3 V 0 − 0.2 0.3 0.05 5.0 0.5 1.0 output current rising voltage threshold delay time Cd = 47 nF; note 4 − 1.4 40 0.75 2.0 125 rising supply voltage threshold falling voltage of regulator threshold hysteresis IREG = 5 mA IREG = 30 mA 6.2 2.1 − − 7.5 2.4 2.25 5.1 5.6 − − − − − 14.4 − − 95 100 5 PARAMETER CONDITIONS MIN. TDA3606A TYP. MAX. UNIT 25 30 50 120 − 20 V V V µA µA mA 8.2 2.7 − − V V V V Schmitt-trigger for battery detection rising voltage threshold falling voltage threshold hysteresis 1.9 1.8 − 2.05 1.95 0.1 2.2 2.1 − V V V Schmitt-trigger for reset 2 rising voltage of regulator falling voltage of regulator hysteresis VRES ≤ 0.8 V; note 3 note 3 note 3 4.25 4.15 − 4.45 4.35 0.1 − 4.7 4.65 4.55 − − 5.7 − 2.8 − V V V Reset 1 and reset 2 buffers LOW-level sink current internal pull-up resistor 2 3.7 mA kΩ µA V ms 0.8 5.2 − − V V mA mA 1998 May 07 6 Philips Semiconductors Product specification Multiple voltage regulator with battery detection SYMBOL Regulator (IREG = 5 mA) Vo output voltage 0.5 mA ≤ IREG ≤ 150 mA; 7 V ≤ VP ≤ 18 V 18 V ≤ VP ≤ 50 V; load dump; IREG = 30 mA Io ∆VREG ∆VREGL SVRR VREGd Iclr Iscr Notes 1. Minimum operating voltage, only if VP has exceeded 7.6 V. output current line regulation load regulation supply voltage ripple rejection drop-out voltage current limit short-circuit current load dump; VP > 25 V 7 V ≤ VP ≤ 18 V 0.5 mA ≤ IREG ≤ 150 mA fi = 200 Hz; Vi(p-p) = 2 V; Io = 5 mA IREG = 150 mA; VP = 5.5 V; note 6 VREG > 4.5 V; note 7 RL ≤ 0.5 Ω; note 8 4.8 4.75 − − − 55 − 0.2 50 5.0 5.0 − 3 − 60 0.9 0.27 80 PARAMETER CONDITIONS MIN. TDA3606A TYP. MAX. UNIT 5.2 5.25 100 50 70 − 1 0.6 − V V mA mV mV dB V A mA 2. The quiescent current is measured in standby mode. So, the battery input is connected to a low voltage source and RL = ∞. 3. The voltage of regulator sinks as a result of a supply voltage drop. Cd C d × V thr 4. The delay time can be calculated with the following formula: t d = ∫ ------ dV thr = ---------------------- (ms) I ch I ch 5. Battery output voltage will be equal or less than the output voltage of regulator. 6. The drop-out voltage of regulator is measured between VP and VREG. 7. At current limit, Iclr is held constant (behaviour according to dashed line in Fig.4). 8. The foldback current protection limits the dissipated power at short-circuit (see Fig.4). handbook, halfpage MGB853 5.0 V VREG 1V Iscr ≥50 mA IREG Iclr Fig.4 Foldback current protection. 1998 May 07 7 Philips Semiconductors Product specification Multiple voltage regulator with battery detection TEST AND APPLICATION INFORMATION Test information TDA3606A handbook, full pagewidth 16 VP VP 10 µF (1) regulator output 10 µF RL(REG) 1 kΩ .. 0.5 Ω 17 15 reset 1 output VC 6 TDA3606A 14 reset 2 output RL(RES1) 1 kΩ battery input voltage 4 VI(bat) 10 µF 5 7 GND MGK598 RL(RES2) 1 kΩ battery output voltage RL(bat) 1 kΩ (1) Capacitor not required for stability. Fig.5 Test circuit. Application information