U6049B [TEMIC]
Radiator Fan Controlled Timer; 散热器风扇控制的定时器
| 型号： | U6049B |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | Radiator Fan Controlled Timer |
| 文件： | 总8页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U6049B
Radiator Fan Controlled Timer
Description
The bipolar integrated circuit, U6049B, is designed as a the radiator fan via relay for a preset period to support the
radiator fan controlled timer. After the ignition is cooling process.
switched off, the thermal switch of the engine can activate
Features
Delay time range: 3.7 s to 20 h
Not debounced input for ignition key (Terminal 15)
Load-dump protection
Cooling time starts when thermal switch is closed
RC-oscillator determines switching characteristics
Relay driver with Z-diode
RF interference protected
Debounced input for coolant temperature switch
Protection according to ISO/TR 7637-1 (VDE 0839)
Ordering Information
Extended Type Number
U6049B
Package
DIP8
SO8
Remarks
U6049B–FP
Block Diagram
47
F
C
1
C
2
R
2
R
1
V
Batt
510
V
V
OSC
7
stab
S
6
8
Stabilization
Power-on reset
Load-dump detection
Oscillator
1
GND
Frequency divider
2
Relay con-
trol output
Logic
Debouncing
Monoflop
Output
94 8748
Ignition
Thermal switch
4
5
3
Programming
C
3
R
4
2 k
100 nF
R
3
V
R
5
Batt
20 k
Terminal 15
Figure 1. Block diagram with external circuit
TELEFUNKEN Semiconductors
1 (8)
Rev. A3, 04-Feb-97
U6049B
Pin Configuration
Pin
1
Symbol
GND
Function
Reference point, ground
Relay control output
1
2
3
4
8
7
6
5
GND
V
V
S
2
Output
Output
3
Ignition Signal input, ignition
Thermal switch, input
Program Programming input
stab
4
S
th
U6049B
5
Ignition
OSC
6
OSC
RC oscillator input
Stabilized voltage
Supply voltage
7
V
stab
S
th
Program
8
V
S
13313
Figure 2. Pinning
Functional Description
The integrated Z-diode (14 V) protects the supply volt-
age,V . Therefore, the operation of the IC is possible
Power Supply, Pin 8
S
For reasons of interference protection and surge immu-
nity, the supply voltage (Pin 8) must be provided with an
between 6 V and 16 V supplied by V
.
Batt
RC circuit as shown in figure 2a. Dropper resistor, R ,
1
However it is possible to operate the integrated circuit
with a 5 V supply, but it should be free of interference
voltages. In this case, Pin 7 is connected to Pin 8 as shown
limits the current in case of overvoltage, whereas C
smoothes the supply voltage at Pin 8.
1
Recommended values are: R = 510 , C = 47 F.
in figure 4, and the R C circuit is omitted.
1
1
1 1
C
2
V
Batt
510
R
1
V
= 5 V
R
2
C
2
S
C
1
R
2
47 F/
16 V
6
7
8
5
V
Batt
6
7
8
5
U6049B
U6049B
4
1
3
2
4
1
3
2
13312
13311
Figure 3. Basic circuit for 12 V voltage supply and oscillator
Figure 4. Basic circuit for VS = 5 V
2 (8)
TELEFUNKEN Semiconductors
Rev. A3, 04-Feb-97
U6049B
Oscillator, Pin 6
Power-on Reset
Oscillator frequency, f, is determined mainly by
R C -circuit. Resistance R determines the charge time,
whereas the integrated resistance (2 k ) is responsible
for discharge time. For the stability of the oscillator
When the operating voltage is switched on, an internal
power-on reset pulse (POR) is generated which sets the
logic of the circuits to a defined initial condition. The
relay control output is disabled.
2
2
2
frequency, it is recommended to select R much greater
2
than internal resistance (2 k ), because the temperature
response and the tolerances of the integrated resistance
are considerably greater than the external resistance
value.
2 V
Pin 3
–
+
20 k
Ignition
Terminal 15
Oscillator frequency, f, is calculated as follows:
20 k
100 nF
7 V
1
15 pF
f
94 8813
t1 t2
Figure 5. Input circuit for ignition (Pin 3)
where
t = charge time =
1
R
2
C
2
1
t = discharge time =
2
2 k
C
2
2
and are constants and has
1
1
1
2
Pin 4, 5
–
+
= 0.833 and = 1.551 when C = 470 pF to 10 nF
2
2
= 0.746 and = 1.284 when C = 10 nF to 4700 nF
2
2
Debounce time, t , and the delay time, t , depend on the
oscillator frequency, f, as follows:
3
d
7 V
15 pF
1
t3
td
6
f
94 8815
1
f
73728
Figure 6. Input circuit Pin 4 and Pin 5
Table 1 shows relationships between t , t , C , R and
3
d
2
2
frequencies from 1 Hz to 20 kHz.
Relay Control Output behavior, Pin 2
Output, Pin 2
The U6049B controls the cooling fan motor in an automo-
bile by means of a relay.
Output Pin 2 is an open-collector Darlington circuit with
integrated 23-V Z-diode for limitation of the inductive
cut–off pulse of the relay coil. The maximum static
collector current must not exceed 300 mA and the satura-
tion voltage is typically 1.1 V @ 200 mA.
Figure 5 shows the internal input circuit of ignition
(Pin 3). It has an integrated pull-down resistor (20 k
RF-capacitor (15 pF) and 7-V Z-diode. It reacts to volt-
ages greater than 2 V.
Interference Voltages and Load-Dump
For the programming input, Pin 5, and thermal switch
input, Pin 4, there is neither a pull-up nor pull-down resis-
tor integrated internally (see figure 6).
The IC supply is protected by R , C , and an integrated
1
1
Z-diode, while the inputs are protected by a series resistor,
integrated Z-diode and RF-capacitor.
One can reduce the standby current through the internal
Z-diode by selecting a higher value for resistance R (see
4
The relay control output is protected via the integrated
23-V Z-diode in the case of short interference peaks. It is
switched to conductive condition for a battery voltage of
figure 8, R up to 200 k ). Resistance R determines the
4
5
contact current through the thermal control switch, S .
th
greater than approx. 40 V in the case of load-dump. The Ignition input (terminal 15) is not debounced. De-
output transistor is dimensioned so that it can withstand bouncing can be achieved by an external circuit (R ,C )
3
3
the current produced.
connected to Pin 3 (see figures 1 and 7).
TELEFUNKEN Semiconductors
3 (8)
Rev. A3, 04-Feb-97
U6049B
V
Batt
Pin 3
Pin 4
Ignition
closed
open
S
th
Delay time
(internal)
Relay
Pin 2
Pin 2
Pin 5=V
:
stab
Relay
Pin 5 = GND:
Pin 5 = Programming Pin
94 8817
= t
d
t is stopped, if S is open
d
th
Figure 7. Timing waveform
The programming input (Pin 5) is high-ohmic and should
100 nF
C2
200 k
R2
VBatt
510
R1
therefore be connected to Pin 7 (V ) or GND. The relay
stab
control output is shown according to Pin 5 connection.
Thermal switch input, Pin 4, is debounced (see figure 1).
Relay control output, Pin 2, is disabled when the battery
6
7
8
1
5
voltage, V , is applied. Relay control output follows the
Batt
C1
47
conditions of the switch, S , only when the ignition is
th
R5
U6049B
switched-ON. This is possible only after the debounce
F
time, t In this case Pin 5 is connected to Pin 7.
3.
4
3
2
Timing waveforms are shown in figure 4. Total delay
C3
R4
time, t , is the sum of all ON-pulses caused by the thermo-
d
static switching. This can run down at once or in parts. If
2 k
Sth
Thermal
switch
100 nF
20 k
S (Pin 4) is open, the oscillator is stopped (switched-off)
th
internally, but when it starts (S closed), the delay time,
th
R3
t , starts running again. In case of renewed switching of
94 8812
d
ignition, the counter of the delay time is reset.
Terminal 15
Figure 8. R4 = 2 k to 200 k
Basic circuit
4 (8)
TELEFUNKEN Semiconductors
Rev. A3, 04-Feb-97
U6049B
Absolute Maximum Ratings
Parameters
Operating voltage, static, 5 min
Ambient temperature range
Storage temperature range
Junction temperature
Symbol
Value
24
Unit
V
V
Batt
T
amb
–40 to +125
–55 to +125
150
°C
°C
°C
T
stg
T
j
Thermal Resistance
Parameters
Symbol
Maximum
Unit
Junction ambient
DIP8
SO8
R
thJA
R
thJA
110
160
K/W
K/W
Electrical Characteristics
V
Batt
=13.5 V, T
= 25°C, reference point ground, figure 2, unless otherwise specified
amb
Parameters
Operating voltage
Test Conditions / Pin
Symbol
Min
6
Typ
5.2
Max
Unit
V
V
Batt
16
24
18
R
510
t < 5 min
t < 60 min
1
5 V supply
Without R , C
V , V
8 7
4.3
6.0
V
1
1
figure 2b
Pins 7 and 8
Pin 7
Stabilized voltage
Undervoltage threshold
Supply current
Internal Z-diode
Relay output
V
V
5.0
3.0
5.4
4.2
2.0
16
V
V
mA
V
7
Power-on reset
Push buttons open
I = 10 mA
S
Pin 8
Pin 8
Pin 2
I
1.3
14
S
V
Z
13.5
8
Saturation voltage
I = 200 mA
V
1.2
2
V
2
2
I = 300 mA
1.5
100
300
2
Leakage current
Output current
V = 14 V
2
I
A
mA
lkg
I
2
Output pulse current
Load dump pulse
Internal Z-diode
I
V
1.5
24
A
V
2
I = 10 mA
2
20
22
2
Oscillator input
f = 0.001 to 40 kHz, see table 1 Pin 6
Internal discharge resistance
Switching voltage
R
1.6
0.9
2.8
2.0
1.1
3.1
2.4
1.4
3.5
1
k
V
6
Lower
Upper
V = 0 V
6
V
V
6L
6H
Input current
–I
A
6
Switching times
Debounce time
Delay time
t
t
5
7
cycles
cycles
3
72704
74752
d
Inputs
Pin 3, 4, 5
Switching threshold
Internal Z-diode
Ignition input
Pull-down resistance
Thermal switch
Input current
V
V
1.6
6.5
2.0
7.1
2.4
8.0
V
V
3,4,5
I
= 10 mA
3, 4, 5
3,4,5
Pin 3
( 15)
Switched to V
R
13
20
50
2
k
Batt
Pin 4
3
V = 0 V
– I
A
A
4
4
5
Programming input
Input current
Pin 5
V = 0 V
– I
2
5
TELEFUNKEN Semiconductors
5 (8)
Rev. A3, 04-Feb-97
U6049B
Table 1. Oscillator frequency, debounce time, delay time. dimensioning
Fre-
De-
Delay time
C
R
Fre-
De-
Delay time
C
R
k
2
2
2
2
quency bounce
t
quency bounce
t
d
d
f
time
f
time
t
t
3
3
Hz
1
ms
6000
3000
2000
1500
1200
1000
857
750
667
600
300
200
150
120
100
86
min
1229
614
410
307
246
205
176
154
137
123
61
s
nF
4700
1000
1000
1000
1000
1000
1000
1000
1000
1000
100
100
100
100
100
100
100
100
100
10
k
Hz
ms
10.00
9.00
8.00
7.00
6.00
3.00
2.00
1.50
1.20
1.00
0.86
0.75
0.67
0.60
0.55
0.50
0.46
0.43
0.40
0.38
0.35
0.33
0.32
0.30
min
s
nF
10
10
10
10
10
1
280
650
440
330
260
220
190
160
140
130
650
440
330
260
220
190
160
140
130
600
400
300
240
600
123
105
92
82
74
37
25
18
15
12
11
200
170
150
130
120
600
400
300
240
200
170
150
130
120
110
99
2
700
3
800
4
900
5
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
6
7
1
8
1
9
1
10
20
30
40
50
60
70
80
90
100
200
300
400
500
1
1
41
9
1
31
8
1
25
7
1
20
6.7
6.1
5.7
5.3
4.9
4.6
4.3
4.1
3.9
3.7
1
18
1
75
15
1
91
67
14
1
85
60
12
1
79
30
369
246
184
147
1
74
20
10
1
70
15
10
1
66
12
10
1
62
1
59
6 (8)
TELEFUNKEN Semiconductors
Rev. A3, 04-Feb-97
U6049B
Package Information
Package DIP8
Dimensions in mm
9.8
9.5
7.77
7.47
1.64
1.44
4.8 max
3.3
6.4 max
0.5 min
0.36 max
0.58
0.48
9.8
8.2
2.54
7.62
8
5
technical drawings
according to DIN
specifications
13021
1
4
Package SO8
Dimensions in mm
5.2
4.8
5.00
3.7
4.85
1.4
0.2
0.25
0.10
0.4
3.8
1.27
6.15
5.85
3.81
8
5
technical drawings
according to DIN
specifications
13034
8
5
TELEFUNKEN Semiconductors
7 (8)
Rev. A3, 04-Feb-97
U6049B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
8 (8)
TELEFUNKEN Semiconductors
Rev. A3, 04-Feb-97
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