TDA3606AT ,Multiple voltage regulator with battery detectionGENERAL DESCRIPTION• One V -state controlled regulator The TDA3606A is a low power voltage regulato ..
TDA3606AT/N1 ,TDA3606A; Multiple voltage regulator with battery detection
TDA3606AT/N1 ,TDA3606A; Multiple voltage regulator with battery detection
TDA3606AT/N1 ,TDA3606A; Multiple voltage regulator with battery detection
TDA3606AT/N1 ,TDA3606A; Multiple voltage regulator with battery detection
TDA3606T ,Multiple voltage regulator with battery detection
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TDA3606AT
Multiple voltage regulator with battery detection
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
FEATURES One VP-state controlled regulator Regulator and reset outputs operate during load dump Supply voltage range of −18to +50V 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.
GENERAL DESCRIPTIONThe TDA3606A is a low power voltage regulator. contains: One fixed voltage regulator with a foldback current
protection, intended to supply a microprocessor, that
also operates during load dump A reset-signal can be used to interface with the
microprocessor Supply pin can withstand load dump pulses and
negative supply voltages 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 2.4V.
QUICK REFERENCE DATA
ORDERING INFORMATION
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
BLOCK DIAGRAM
PINNING
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
FUNCTIONAL DESCRIPTIONThe 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.
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.
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
LIMITING VALUESIn accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL CHARACTERISTICS
Notes On IMS board. On standard board with double sided copper area connected to pins.
QUALITY SPECIFICATIONIn 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.
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
CHARACTERISTICS= 14.4 V; Tamb =25 °C; see Fig.5; unless otherwise specified.
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
Notes Minimum operating voltage, only if VP has exceeded 7.6V. The quiescent current is measured in standby mode. So, the battery input is connected to a low voltage source and=∞. The voltage of regulator sinks as a result of a supply voltage drop. The delay time can be calculated with the following formula: Battery output voltage will be equal or less than the output voltage of regulator. The drop-out voltage of regulator is measured between VP and VREG. At current limit, Iclr is held constant (behaviour according to dashed line in Fig.4). The foldback current protection limits the dissipated power at short-circuit (see Fig.4).ddch
-------dVthr∫d Vthr×ch
---------------------- -(ms)==
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection TDA3606A
TEST AND APPLICATION INFORMATION
Test information
Application informationNOISE
The noise at the output of the regulator depends on the
bandwidth of the regulator, which can be adjusted by
means of the output capacitor. In Table 1 the noise figures
are given.
Table 1 Noise figures
Note Measured at a bandwidth of 10 Hzto 100 kHz.
The noise on the supply line depends on the value of the
supply capacitor and is caused by a current noise (output
noise of the regulator is translated into a current noise by
means of the output capacitor). When a high frequency
capacitor of 220 nF in parallel with an electrolytic capacitor
of 100 μF is connected directly to pins17 and 7 (supply
and ground) the noise is minimized.
STABILITY
The regulator is stabilized by means of the output
capacitor. The value of the output capacitor can be
selected using the diagram shown in Fig.6. The following
two examples show the effects of the stabilization circuit
using different values for the output capacitor.
Example1
The regulator is stabilized using an electrolytic output
capacitor of 68 μF (ESR= 0.5 Ω). At −40 °C the capacitor
value is decreased to 22 μF and the ESR is increased to
3.5 Ω. The regulator will remain stable at a temperature of
−40 °C.
Example2
The regulator is stabilized using an electrolytic output
capacitor of 10 μF (ESR= 3.3 Ω). At −40 °C the capacitor
value is decreased to 3 μF and the ESR is increased to
23.1 Ω. The regulator will be instable at a temperature of
−40 °C. This can be solved using a tantalum capacitor of μF.
