TDA3605Q [NXP]
Multiple voltage regulator with switch; 带开关多电压调节器
| 型号： | TDA3605Q |
| 厂家： | 
NXP |
| 描述： | Multiple voltage regulator with switch |
| 文件： | 总16页 (文件大小：126K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TDA3605Q
Multiple voltage regulator with
switch
1997 Jul 09
Preliminary specification
Supersedes data of 1995 Nov 20
File under Integrated Circuits, IC01
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
FEATURES
GENERAL DESCRIPTION
• Two VP-state controlled regulators (regulator 1 and
regulator 3) and a power switch
The TDA3605Q is a multiple output voltage regulator with
a power switch, intended for use in car radios with or
without a microcontroller. It contains:
• Regulator 2, reset and ignition buffer operates during
load dump and thermal shutdown
1. Two fixed voltage regulators with a foldback current
protection (regulator 1 and regulator 3) and one fixed
voltage regulator (regulator 2), intended to supply a
microcontroller, that also operates during load dump
and thermal shutdown.
• Separate control pins for switching regulator 1,
regulator 3 and the power switch
• Supply voltage range of −18 to +50 V (operating from
11 V)
2. A power switch with protections, operated by an
enable input.
• Low reverse current of regulator 2
• Low quiescent current (when regulator 1, regulator 3,
and power switch are switched off)
3. Reset and hold outputs can be used to interface by the
microcontroller. The reset signal can be used to call up
the microcontroller and the hold output indicates
regulator 1 voltage available and within range.
• Hold output (only valid when regulator 1 is switched on)
• Reset and hold outputs (open collector outputs)
• Adjustable reset delay time
4. A supply pin which can withstand load dump pulses
and negative supply voltage.
• High ripple rejection
5. Regulator 2 will be switched on at a supply voltage
>6.5 V and off at a voltage of regulator 2 <1.9 V.
• Back-up capacitor for regulator 2.
6. Also there is a provision for use of a reserve supply
capacitor that will hold enough energy for regulator 2
(5 V continuous) to allow a microcontroller to prepare
for loss of voltage.
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
• Local thermal protection for power switch
• Load dump protection
• Foldback current limit protection for
regulators 1, 2 and 3
• Delayed second current limit protection for the power
switch (at short-circuit)
• The regulator outputs and the power switch are DC
short-circuited safe to ground and VP.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
DESCRIPTION
VERSION
TDA3605Q
DBS13P
SOT141-6
plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)
1997 Jul 09
2
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
QUICK REFERENCE DATA
SYMBOL
Supply
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VP
supply voltage
operating
11
−18
2.4
−
14.4
−
18
−
V
reverse battery
regulator 2 on
jump start
V
14.4
−
18
30
50
600
150
V
t ≤ 10 minutes
during ≤50 ms; tr ≥ 2.5 ms
V
load dump protection
−
−
V
Iq(tot)
Tj
Voltage regulators
total quiescent supply current standby mode
−
500
−
µA
°C
junction temperature
−
VREG1
VREG2
VREG3
output voltage regulator 1
0.5 mA ≤ IREG1 ≤ 600 mA
9.5
10.0
10.5
5.25
5.25
V
V
V
output voltage regulator 2
output voltage regulator 3
0.5 mA ≤ IREG2 ≤ 300 mA; VP = 14.4 V 4.75 5.0
0.5 mA ≤ IREG3 ≤ 400 mA
4.75 5.0
Power switch
Vsw(d)
drop-out voltage
peak current
Isw = 1 A
−
−
3
0.45
0.7
1.8
−
V
V
A
I
sw = 1.8 A
1
IswM
−
1997 Jul 09
3
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
BLOCK DIAGRAM
POWER SWITCH
13 (14.2 V/3 A)
(14.4 V)
1
7
V
V
sw
P
1 A after 10 ms
(short-circuit)
TEMPERATURE
LOAD DUMP
PROTECTION
&
V
en(sw)
BACK-UP SWITCH
12
(14.2 V/100 mA)
V
bu
BACK-UP CONTROL
11 (5 V/100 mA)
REGULATOR 2
REGULATOR 3
REG2
REG3
3
(5 V/400 mA)
(10 V/600 mA)
&
&
4
6
V
en3
2
8
REGULATOR 1
REG1
V
en1
V
hold
TDA3605Q
5
RES
9
V
C
10
MGB753
GND
Fig.1 Block diagram.
4
1997 Jul 09
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
PINNING
SYMBOL
PIN
DESCRIPTION
supply voltage
handbook, halfpage
V
1
2
P
VP
1
2
REG1
REG3
REG1
REG3
Ven3
RES
Ven1
Ven(sw)
Vhold
VC
regulator 1 output
regulator 3 output
enable input regulator 3
reset output voltage
enable input regulator 1
enable input power switch
hold output
3
3
4
V
4
en3
5
RES
5
6
V
6
en1
7
V
7
TDA3605Q
en(sw)
8
V
8
hold
9
reset delay capacitor
ground (0 V)
V
C
9
GND
REG2
Vbu
10
11
12
13
regulator 2 output
back-up
10
11
12
13
GND
REG2
Vsw
power switch output voltage
V
bu
V
sw
MGB752
Fig.2 Pin configuration.
Regulator 1 has a hold output (open collector) indicating
that the output voltage of this regulator is settled
FUNCTIONAL DESCRIPTION
The TDA3605Q 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 in the TDA3605Q.
(held HIGH by external pull-up resistor) and when the
output voltage of this regulator drops out of regulation
(because of supply voltage drop or high load) the hold
output will go LOW. The hold output signal is only valid
when regulator 1 is enabled by its enable input (pin 6).
Regulator 2 will switch-on when the back-up 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 far 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 pin 9. 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.
The power switch can also be controlled by means of a
separate enable input (pin 7).
All output pins are fully protected. The regulators are
protected against load dump (regulator 1 and 3 will switch
off at supply voltages >18 V) and short-circuit (foldback
current protection).
The switch contains a current protection, but this
protection is delayed at short-circuit condition for at least
10 ms. During this time the output current is limited to a
peak value of at least 3 A and 2 A (DC) (VP ≤ 18 V).
At supply voltages >17 V the switch is clamped at
maximum 16 V (to avoid external connected circuitry being
damaged by an overvoltage) and the switch will switch-off
at load dump.
The charge of the back-up capacitor can be used to supply
regulator 2 for a short period when the supply falls to 0 V
(time depends on value of storage capacitor). When both
regulator 2 and the supply voltage (VP > 4.5 V) are
available, regulators 1 and 3 can be operated by means of
enable inputs (pins 6 and 4 respectively).
The total timing of a semi on/off logic set is shown in Fig.3.
1997 Jul 09
5
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
load dump
V
P
6.5 V
5.4 V
4.0 V
V
bu
5.0 V
regulator 2
1.9 V
0 V
5.0 V
3.0 V
0 V
reset
delay
capacitor
6.0 V
reset
Back-up Schmitt-trigger and reset behaviour
load dump
18.0 V
10.4 V
4.5 V
4.0 V
V
P
≥2.2 V
≤2.0 V
enable
regulator 1
10.0 V
0 V
regulator 1
≥2.2 V
≤2.0 V
enable
regulator 3
5.0 V
0 V
regulator 3
V
and enable Schmitt-trigger
P
load dump
16.9 V
V
P
4.5 V
4.0 V
enable
power
switch
≥2.2 V
≤2.0 V
power
switch
output
0 V
MGB759
Switch behaviour
Fig.3 Timing diagram.
6
1997 Jul 09
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
VP
PARAMETER
supply voltage
CONDITIONS
MIN.
MAX.
UNIT
operating
−
−
−
−
−
18
V
jump start
t ≤ 10 minutes
30
V
load dump protection
reverse battery voltage
total power dissipation
storage temperature
ambient temperature
junction temperature
during ≤50 ms; tr ≥ 2.5 ms
50
V
VP
non-operating
−18
62
V
Ptot
Tstg
Tamb
Tj
W
°C
°C
°C
non-operating
operating
−55
−40
−40
+150
+85
+150
operating
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
VALUE
UNIT
K/W
K/W
Rth j-c
Rth j-a
thermal resistance from junction to case
thermal resistance from junction to ambient in free air
2
50
CHARACTERISTICS
VP = 14.4 V; Tamb = 25 °C; see Fig.6; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VP
supply voltage
operating
11
14.4
18
18
30
50
V
regulator 2 on
jump start
note 1
t ≤ 10 minutes
2.4
−
14.4
−
V
V
V
load dump protection during ≤50 ms;
tr ≥ 2.5 ms
−
−
Iq
quiescent current
VP = 12.4 V; note 2;
IR2 = 0.1 mA
−
−
500
520
600
µA
µA
VP = 14.4 V; note 2;
IR2 = 0.1 mA
−
Schmitt-trigger power supply for switch, regulator 1 and regulator 3
Vthr
Vthf
Vhys
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
Vthr
Vthf
Vhys
rising voltage threshold
falling voltage threshold
hysteresis
6.0
1.7
−
6.5
1.9
4.6
7.1
2.2
−
V
V
V
1997 Jul 09
7
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Schmitt-trigger for enable input (regulator 1, regulator 3 and switch)
Vthr
Vthf
Vhys
ILI
rising voltage threshold
falling voltage threshold
hysteresis
1.7
1.5
0.1
1
2.2
2.0
0.2
5
2.7
2.5
0.5
10
V
V
IREG = ISW = 1 mA
Ven = 5 V
V
input leakage current
µA
Schmitt-trigger for reset buffer
Vthr
Vthf
Vhys
rising voltage threshold VP rising;
−
V
REG2 − 0.15 VREG2 − 0.075
REG2 − 0.35 −
V
V
V
of regulator 2
IREG1 = 50 mA; note 3
falling voltage threshold VP rising;
4.3
0.1
V
of regulator 2
IREG1 = 50 mA; note 3
hysteresis
0.2
0.3
Schmitt-trigger for hold
Vthr
Vthf
Vhys
rising voltage threshold VP rising; note 3
of regulator 1
−
V
V
REG1 − 0.15 VREG1 − 0.075
REG1 − 0.35 −
V
V
V
falling voltage threshold VP rising; note 3
of regulator 1
9.2
0.1
hysteresis
0.2
0.3
Reset and hold buffer
ILsink LOW level sink current
ILO
V
RES/hold ≤ 0.8 V
2
−
−
mA
output leakage current
VP = 14.4 V;
−
16
32
µA
VRES/hold = 5 V
tr
tf
rise time
fall time
note 4
note 4
−
−
7
1
50
50
µs
µs
Reset delay
Ich
charge current
2
4
8
µA
µA
V
Idch
Vthr
td
discharge current
rising voltage threshold
delay time
500
2.5
20
800
3.0
35
−
3.5
70
C = 47 nF; note 5
ms
Regulator 1 (IREG1 = 5 mA)
VREG1(off)
VREG1
output voltage off
output voltage
−
1
400
10.5
10.5
75
mV
V
1 mA ≤ IREG1 ≤ 600 mA
11 V ≤ VP ≤ 18 V
9.5
9.5
−
10.0
10.0
2
V
∆VREG1
∆VREGL1
Iq
line regulation
load regulation
quiescent current
11 V ≤ VP ≤ 18 V
mV
mV
mA
dB
1 mA ≤ IREG1 ≤ 600 mA
IR1 = 600 mA
−
20
25
70
50
−
60
SVRR1
supply voltage ripple
rejection
fi = 3 kHz; Vi(p-p) = 2 V
60
−
VREGd1
IREGm1
drop-out voltage
IREG1 = 550 mA;
VP = 9.5 V; note 6
−
0.4
1.2
0.7
V
A
current limit
VREG1 > 8.5 V; note 7
0.65
−
1997 Jul 09
8
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
SYMBOL
PARAMETER
CONDITIONS
MIN.
250
TYP.
MAX.
UNIT
IREGsc1
short-circuit current
RL ≤ 0.5 Ω; note 8
800
−
mA
Regulator 2 (IREG2 = 5 mA)
VREG2
output voltage
0.5 mA ≤ IREG2 ≤ 150 mA 4.75
0.5 mA ≤ IREG2 ≤ 300 mA 4.75
5.0
5.0
5.0
5.0
5.25
5.25
5.25
5.25
V
V
V
V
7 V ≤ VP ≤ 18 V
4.75
4.75
18 V ≤ VP ≤ 50 V;
IREG2 ≤ 150 mA
∆VREG2
line regulation
load regulation
6 V ≤ VP ≤ 18 V
−
2
50
75
50
100
−
mV
mV
mV
mV
dB
6 V ≤ VP ≤ 50 V
−
15
20
−
∆VREGL2
1 mA ≤ IREG2 ≤ 150 mA
1 mA ≤ IREG2 ≤ 300 mA
f = 3 kHz; Vi(p-p) = 2 V
−
−
SVRR2
VREGd2
supply voltage ripple
rejection
60
70
drop-out voltage
IREG2 = 100 mA;
VP = 4.75 V; note 6
−
−
−
−
0.4
0.8
0.2
0.8
0.6
1.2
0.5
1.0
V
V
V
V
IREG2 = 200 mA;
VP = 5.75 V; note 6
I
REG2 = 100 mA;
Vbu = 4.75 V; note 7
REG2 = 200 mA;
bu = 5.75 V; note 7
I
V
IREGm2
IREGsc2
current limit
VREG2 > 4.5 V; note 7
0.32
20
0.37
100
−
−
A
short-circuit current
RL ≤ 0.5 Ω; note 8
mA
Regulator 3 (IREG3 = 5 mA)
VREG3(off)
VREG3
output voltage off
output voltage
−
1
400
5.25
5.25
50
mV
V
1 mA ≤ IREG3 ≤ 400 mA
7 V ≤ VP ≤ 18 V
4.75
4.75
−
5.0
5.0
2
V
∆VREG3
∆VREGL3
Iq
line regulation
load regulation
quiescent current
7 V ≤ VP ≤ 18 V
mV
mV
mA
dB
1 mA ≤ IREG3 ≤ 400 mA
IR3 = 400 mA
−
20
15
70
50
−
40
SVRR3
supply voltage ripple
rejection
fi = 3 kHz; Vi(p-p) = 2 V
60
−
VREGd3
drop-out voltage
IREG3 = 400 mA;
−
1
1.5
V
VP = 5.75 V; note 6
IREGm3
IREGsc3
current limit
VREG3 > 4.5 V; note 7
0.45
100
0.70
400
−
A
short-circuit current
RL ≤ 0.5 Ω; note 8
mA
1997 Jul 09
9
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Power switch
Vswd
drop-out voltage
Isw = 1 A; note 10
−
−
0.45
0.7
1.8
−
V
Isw = 1.8 A; note 10
1.0
2.0
15.0
−
V
A
V
A
Isw(dc)
Vswcl
IswM
continuous current
clamping voltage
peak current
VP = 16 V; VSW = 13.5 V 1.8
VP ≥ 17 V
13.5
16.0
−
VP = 17 V;
notes 11 and 12
3
−
−
Vswfb
fly back voltage
behaviour
Isw = −100 mA
VP + 3
0.8
22
V
A
Isw(sc)
short-circuit current
VP = 14.4 V; Vsw ≤ 1.2 V;
−
note 12
Back-up switch
Ibu(DC)
Vbucl
Vr
continuous current
0.3
−
0.35
−
−
A
clamping voltage
reverse current
VP ≥ 16.7 V
16
900
V
VP = 0 V; Vbu = 12.4 V
−
−
ms
Notes
1. Minimum operating voltage, only if VP has exceeded 6.5 V.
2. The quiescent current is measured in the standby mode. So, the enable inputs of regulators 1 and 3 and the switch
are grounded and R2 = ∞ (see Fig.6).
3. The voltage of the regulator sinks as a result of a VP drop.
4. The rise and fall times are measured with a 10 kΩ pull-up resistor and a 50 pF load capacitor.
5. The delay time depends on the value of the capacitor:
C
td
=
× V
= C × (750×103) (ms)
C (th)
------
Ich
6. The drop-out voltage of regulators 1, 2 and 3 is measured between VP and VREGn
7. At current limit, IREGmn is held constant (see Fig.4 for behaviour of IREGmn).
.
8. The foldback current protection limits the dissipated power at short-circuit (see Fig.4).
9. The peak current of 300 mA can only be applied for short periods (t < 100 ms).
10. The drop-out voltage of the power switch is measured between VP and Vsw.
11. The maximum output current of the switch is limited to 1.8 A when the supply voltage exceeds 18 V.
A test-mode is built-in. The delay time of the switch will be disabled when a voltage of VP + 1 V is applied to the switch
enable input.
12. At short circuit, Isw(sc) of the power switch is held constant to a lower value than the continuous current after a delay
of at least 10 ms. A test-mode is built-in. The delay time of the switch will be disabled when a voltage of VP + 1 V is
applied to the switch enable input.
1997 Jul 09
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Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
handbook, halfpage
9 V
MGB755
handbook, halfpage
V
V
REG2
REG1
MGB756
5.0 V
2 V
1 V
I
I
I
I
≥300 mA
≥50 mA
REGsc1
REGm1
REGsc2
REGm2
I
REG2
I
REG1
a. Regulator 1.
b. Regulator 2.
handbook, halfpage
V
REG3
5.0 V
MGB757
1 V
I
I
REGm3
≥200 mA
REGsc3
I
REG3
c. Regulator 3.
Fig.4 Foldback current protection of the regulators.
handbook, halfpage
MGB758
≥3
I
sw
(A)
1.8
t (ms)
≥10
VSW ≥ 5 V.
Fig.5 Current protection of the power switch.
11
1997 Jul 09
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
TEST AND APPLICATION INFORMATION
Test information
V
V
P
sw
13
11
2
1
(1)
C2
220 nF
C1
220 nF
V
R
P
L(sw)
1 kΩ
enable input power switch
enable input regulator 1
enable input regulator 3
regulator 2
regulator 1
regulator 3
5 V
7
6
4
C3
10 µF
V
R
en(sw)
L(REG2)
1 kΩ
10 V
C4
10 µF
V
R
en1
L(REG1)
1 kΩ
TDA3605Q
5 V
3
C5
10 µF
R
V
L(REG3)
en3
1 kΩ
R2
10 kΩ
reset
capacitor
reset
output
9
5
8
C7
C6
1 µF
47 nF
R3
10 kΩ
back-up
capacitor
hold
output
12
R1
1 kΩ
C8
220 nF
10
V
bu
GND
MGB754
(1) Capacitor not required for stability.
Fig.6 Test circuit.
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 regulators is translated into a current noise by
means of the output capacitors).
Application information
NOISE
Table 1 Noise figures
When a high frequency capacitor of 220 nF in parallel with
an electrolytic capacitor of 100 µF is connected directly to
pins 3 and 8 (supply and ground) the noise is minimal.
NOISE FIGURE (µV)(1)
REGULATOR
at OUTPUT CAPACITOR
10 µF
47 µF
100 µF
STABILITY
1
2
3
−
−
−
150
150
200
−
−
−
The regulators are made stable with the externally
connected output capacitors. The value of the output
capacitors can be selected by referring to the graphs
illustrated in Figs 7 and 8.
Note
1. Measured at a bandwidth of 200 kHz.
1997 Jul 09
12
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
When an electrolytic capacitor is used the temperature
behaviour of this output capacitor can cause oscillations at
cold temperature.
Example 2
Regulator 2 is made stable with a 10 µF electrolytic
capacitor (ESR = 3 Ω). At −30 °C the capacitor value is
decreased to 3 µF and the ESR is increased to 23.1 Ω.
The regulator will be unstable at −30 °C (see Fig.7).
The following two examples explain how an output
capacitor value is selected.
Example 1
Solution
Regulator 1 is made stable with an electrolytic output
capacitor of 220 µF (ESR = 0.15 Ω). At −30 °C the
capacitor value is decreased to 73 µF and the ESR is
increased to 1.1 Ω. The regulator will remain stable at
−30 °C.
Use a tantalum capacitor of 10 µF or a large electrolytic
capacitor. The use of tantalum capacitors is recommended
to avoid problems with stability at cold temperatures.
MBK100
handbook, halfpage
4
handbook, halfpage
MBK099
14
12
10
8
maximum ESR
maximum ESR
R
R
(Ω)
(Ω)
3
stable region
2
1
0
stable region
6
4
minimum ESR
2
minimum ESR
10
1
10
100
0
C (µF)
0.22
1
100
C (µF)
Fig.7 Curve for selecting the value of output
capacitor for regulator 2.
Fig.8 Curve for selecting the value of output
capacitor for regulators 1 and 3.
1997 Jul 09
13
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
PACKAGE OUTLINE
DBS13P: plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)
SOT141-6
non-concave
x
D
h
D
E
h
view B: mounting base side
d
A
2
B
j
E
A
L
3
L
Q
c
1
13
e
e
m
v
M
w
M
1
Z
2
b
p
e
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
(1)
(1)
(1)
UNIT
A
A
b
c
D
d
D
E
e
e
e
E
j
L
L
3
m
Q
v
w
x
Z
2
p
h
1
2
h
17.0 4.6 0.75 0.48 24.0 20.0
15.5 4.2 0.60 0.38 23.6 19.6
12.2
11.8
3.4 12.4 2.4
3.1 11.0 1.6
2.00
1.45
2.1
1.8
6
mm
10
3.4
1.7 5.08
0.8
4.3
0.25 0.03
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
92-11-17
95-03-11
SOT141-6
1997 Jul 09
14
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch
TDA3605Q
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Jul 09
15
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Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
© Philips Electronics N.V. 1997
SCA55
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
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under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
547027/1200/02/pp16
Date of release: 1997 Jul 09
Document order number: 9397 750 02236
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