INTEGRATED CIRCUITS
DATA SHEET
TDA3602 Multiple output voltage regulator
Product specification File under Integrated Circuits, IC01 July 1994
Philips Semiconductors
Product specification
Multiple output voltage regulator
FEATURES • Two VP state controlled regulators (REG1 and REG2) • Regulator 3 operates during load dump or thermal shutdown • Multi-function control pin • A back-up circuit for Regulator 3 via a single capacitor • Supply voltage of −6 V to 50 V (a voltage of −3 V on VP does not discharge capacitor Cbu) • Low reverse current Regulator 3 • Low quiescent current in coma mode • HOLD output • RESET output (LOW at load dump) • High ripple rejection. PROTECTIONS • Foldback current limit protection (Regulators 1 and 2) • Load dump protection • Thermal protection • DC short-circuit safe to ground and VP of all regulator outputs • Reverse polarity safe of pin 1 (VP). No high currents are flowing which can damage the IC • Capable of handling high energy on the regulator outputs. GENERAL DESCRIPTION
TDA3602
The TDA3602 is a multiple output voltage regulator, intended for use in car radios with or without a microprocessor. It contains two fixed voltage regulators with foldback current protection (Regulators 1 and 2), and one fixed voltage regulator that also operates during load dump and thermal shutdown. This regulator can be used to supply a microprocessor. A back-up circuit supplies Regulator 3 during a short period after the power is cut off (negative field decay or engine start procedure). A state control pin (pin 4) controls the device, which can be switched through four stages using the information at this pin. The switching levels at this pin contain hysteresis. RESET and HOLD outputs can be used to interface with a microprocessor. The RESET signal can be used to call up or initialize a microprocessor (power-on reset). The HOLD signal can be used to control the power stages (mute signal in a low end application), or to generate a HOLD interrupt (microprocessor application). An internal Zener diode on the back-up pin allows this pin to withstand a load dump when supplied by the pin using a 100 Ω series resistor. The supply pin can withstand load dump pulses and negative supply voltages.
July 1994
2
Philips Semiconductors
Product specification
Multiple output voltage regulator
QUICK REFERENCE DATA SYMBOL Supply VP positive supply voltage operating Regulator 3 on jump start load dump; Regulator 3 on operating load dump; Regulator 3 on IP Tvj VR1 VR2 VR3 Note 1. Vbu (pin 8) supplied by VP2 with a 100 Ω series resistor and IREG3 < 10 mA. ORDERING INFORMATION EXTENDED TYPE NUMBER TDA3602(1) Note 1. SOT110-1; 1996 August 21. PACKAGE PINS 9 PIN POSITION SIL MATERIAL plastic total quiescent current virtual junction temperature 0.5 mA ≤ IR1 ≤ 250 mA 0.5 mA ≤ IR2 ≤ 140 mA 0.5 mA ≤ IR3 ≤ 50 mA note 1 note 1 coma mode 9.2 6.0 − − 6.5 − − − 14.4 14.4 − − − − 290 − PARAMETER CONDITIONS MIN. TYP.
TDA3602
MAX.
UNIT
18 18 30 50 30 50 − 150
V V V V V V µA °C
Voltage regulators output voltage Regulator 1 output voltage Regulator 2 output voltage Regulator 3 8.2 4.8 4.8 8.5 5.0 5 8.8 5.2 5.2 V V V
CODE SOT110
July 1994
3
July 1994
handbook, full pagewidth
Philips Semiconductors
VP
1
VP SCHMITT TRIGGER
TDA3602
2 REGULATOR 1
&
V REG1 8.5 V
Multiple output voltage regulator
PROTECTION LOADDUMP / V REVERSE bu POLARITY Q REGULATOR 2 R S 9
V REG2 5 V
4
REGULATOR 3 7 V REG3 5V 5 V switched R1,R2 on Vsc > 2 V L / H current reset 3 reset
bu (back up)
V
8
Vbu SCHMITT TRIGGER
V bu Zener (21 V)
&
HOLD CIRCUIT CONTROL
5
hold
sc (state control)
V
4
STATE CONTROL CIRCUIT
6
MCD346 - 1
ground
Product specification
TDA3602
Fig.1 Block diagram.
Philips Semiconductors
Product specification
Multiple output voltage regulator
PINNING
handbook, halfpage
TDA3602
SYMBOL VP REG1 RESET Vsc HOLD GND REG3 Vbu REG2 1 2 3 4 5 6 7 8 9
PIN
DESCRIPTION positive supply voltage Regulator 1 output reset output state control input hold output ground Regulator 3 output back-up Regulator 2 output
VP REG1 RESET Vsc HOLD GND REG3 V bu REG2
1 2 3 4 5 6 7 8 9
MCD345
TDA3602
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION This multiple output voltage regulator contains three fixed voltage regulators, numbered 1, 2 and 3. Two of these can be switched between the on and off states using the state control pin (pin 4). The third (Regulator 3), which is continuously in, can be switched by the state control pin between a low and a high current mode. In addition to Regulators 1 and 2, the device is supplied by an internal switch that is open when the supply voltage falls below the back-up voltage (negative field decay or engine start procedure), or during a load dump. (During this load dump, Regulators 1 and 2 are switched off and RESET is switched LOW). This switched supply voltage (the so-called back-up voltage (Vbu), is available at pin 8. An electrolytic capacitor can be connected to this pin, and the charge on this capacitor can be used to supply the device for a short period after the supply voltage is removed. Three pins are provided for interfacing with a microprocessor: • state control pin • hold output pin • reset output pin. When the supply voltage (VP) is connected to the device, Vbu will rise. When Vbu reaches 7.9 V, the device is in the power-on mode. The RESET output goes HIGH and Regulator 3 is switched on. In a microprocessor application, the RESET output can be used to call up the CPU and to initialize the program. July 1994 5
What follows depends on the voltage at the state control pin (Vsc). In most applications, when the supply voltage is connected, Vsc will rise slowly (e.g. by charging a capacitor).The device will leave the power-on mode and enter the reset mode when Vsc rises above 2.2 V. In both the power-on and reset modes, Regulator 3 will be in the high current mode, Regulators 1 and 2 will be switched off and the RESET output will be HIGH. The device will enter the wake mode when Vsc reaches 2.8 V. The RESET pin will go LOW and the CPU must be switched to the sleep mode. Regulator 3 is still in the high current mode. As Vsc continues rising and the voltage reaches 3.6 V, the stabilizer will be switched into the sleep mode. It will be in a coma mode when Vsc is greater than 3.8 V. In this mode, only the relevant circuits remain operating; this is to keep the power consumption as low as possible i.e. typically 290 µA. If the device is switched on with Vsc already higher than 3.8 V, the device will be switched directly from the power-on mode into the coma mode. When Vsc is lowered gradually from 3.6 V (or higher) to 2 V, the device will go from sleep to reset again. Vsc must be lower than 1.1 V to bring the device into the on mode; note that this is not the same as the power-on mode. In this condition, Regulator 3 is in the high current mode, both Regulators 1 and 2 are switched on and the HOLD output will be HIGH (depending on the state of VP and the in-regulation condition of Regulators 1 and 2).
Philips Semiconductors
Product specification
Multiple output voltage regulator
TDA3602
When the device is in the on mode, it will switch back to the reset mode when Vsc rises to 2 V, or when the supply voltage drops below 7.3 V. When VREG3 drops below 3 V, the device will return to the power off mode, regardless of the condition the device was in. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP PARAMETER supply voltage operating jump start load dump Regulator 3 on load dump reverse battery voltage Tstg Tvj Vpr Ptot Note 1. Vbu (pin 8) supplied by VP2 with a 100 Ω series resistor and IREG3 < 10 mA. THERMAL RESISTANCE SYMBOL Rth j-a Rth j-c PARAMETER from junction to ambient in free air from junction to case (see Fig.6) THERMAL RESISTANCE 50 K/W 12 K/W storage temperature virtual junction temperature reverse polarity total power dissipation non-operating operating non-operating t ≤ 10 min t ≤ 50 ms; tr ≥ 2.5 ms VP > −3 V; note 1 t ≤50 ms; tr ≥ 2.5 ms; note 1 − − − − − −6 −55 −40 − − 18 30 50 30 50 − +150 +150 6 15 V V V V V V °C °C V W CONDITIONS MIN. MAX. UNIT
CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; measured in Fig.6; unless otherwise specified. SYMBOL Supply VP supply voltage operating Regulator 3 on jump start load dump IP quiescent current VP = 12.4 V VP = 14.4 V note 1 t ≤ 10 min t ≤ 50 ms; tr ≥ 2.5 ms Vsc > 4V; note 2 − − 280 290 360 − µA µA 9.2 6.0 − − 14.4 14.4 − − 18 18 30 50 V V V V PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
July 1994
6
Philips Semiconductors
Product specification
Multiple output voltage regulator
TDA3602
SYMBOL Schmitt triggers
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VP2 SCHMITT TRIGGER (FOR HOLD AND REGULATORS 1 AND 2) Vthr Vthf Vhy Vthr Vthf Vhy Vthr Vthf Vhy Vthr Vthf Vhy Vth Vthr1 Vthf1 Vhy1 Vthr2 Vthf2] Vhy2 Vthr3 Vthf3 Vhy3 Iscl rising voltage threshold falling voltage threshold hysteresis 7.3 6.8 − − − − − − − 7.3 2.5 − − 3.35 2.5 0.85 2.6 1.75 0.85 1.85 1.0 0.85 Vsc ≤ 0.8 V Vsc ≥ 4 V − − 7.6 7.1 0.5 VR1 − 0.2 VR1 − 0.3 0.1 VR2 − 0.2 VR2 − 0.3 0.1 8.0 7.5 − − − − − − − 8.4 3.5 − − 3.85 2.9 1.0 3.0 2.05 1.0 2.15 1.2 1.0 −1 1 V V V
REGULATOR 1 SCHMITT TRIGGER (FOR HOLD) rising voltage threshold falling voltage threshold hysteresis V V V
REGULATOR 2 SCHMITT TRIGGER (FOR HOLD) rising voltage threshold falling voltage threshold hysteresis V V V
VBU SCHMITT TRIGGER (REGULATOR 3) rising voltage threshold Vbu falling voltage threshold VREG3 hysteresis 7.9 3 4.9 Vthr1 + 0.2 3.6 2.7 0.92 2.8 1.9 0.92 2.0 1.1 0.92 − − V V V
State control pin voltage threshold between sleep and coma voltage threshold wake to sleep voltage threshold sleep to wake hysteresis wake/sleep voltage threshold reset to wa
