ATMEL ATA2069-3ASY Flasher with trailer control Datasheet

Features
•
•
•
•
Lamp Outage Indication for Car and Trailer
Temperature and Supply Voltage Compensated Flashing Frequency
Relay Driver Output with High Current Carrying Capacity and Low Saturation Voltage
Minimum Lamp Load for Flasher Operation > 10W
1. Description
The bipolar integrated circuit ATA2069 is designed for the use in relay-operated automotive flasher modules and makes it possible to detect the outage of flasher bulbs on
the vehicle itself and also on a trailer.
Vehicles with a trailer hook are equipped with additional pilot lamps in the dashboard.
ATA2069 is off (i.e., the relay is deactivated) as long as the flasher switch (at contact
+49a) is open. As soon as this switch is closed, the IC starts reliably with the bright
phase.
Flasher with
Trailer Control
ATA2069
There are two thresholds integrated: one threshold is defined to be 21 + 10W and is
designed for the lamp outage detection of 1 of 2 lamps. If the current is below this
threshold, the IC switches to frequency doubling, just like the standard flashers (e.g.
U2043B).
The other threshold is defined to be 42 + 10W and is designed for the outage detection of 1 of 3 lamps; if this happens, the additional trailer pilot lamp is switched off, but
there is no frequency doubling. 50 ms after the start of the bright phase, the comparator measures the voltage drop at the shunt and latches this value for the rest of the
bright phase. The output of this pilot lamp (pin 8) is short-circuit protected against
GND. In case of a short circuit the external transistor is switched off after 52 ms for the
rest of the current flasher cycle, but it is enabled again for the next cycle.
4917C–AUTO–10/07
Figure 1-1.
Block Diagram
VS
2
+49
VS - 57 mV
C1
K1
5
32V
VS - 111 mV
3 kΩ
R1
R4
10Ω
K4
Timing Unit
K2
VS - 11 mV
S
R
6
Q
VS/2
K3
1
40% of VS
K5
3
7
4
R3
1.5 kΩ
Relay
49a
R2
100Ω
8
Shunt
R6
VS
R5
20 mΩ
+49
150Ω
4W
Pilot
lamp
trailer
21W
trailer
2
5W
21W
21W
21W
21W
5W
21W
trailer
ATA2069
4917C–AUTO–10/07
ATA2069
2. Pin Configuration
Figure 2-1.
Pinning
GND
VS
REL
LD
Table 2-1.
Pin
1
2
3
4
8
7
6
5
OPL
SI
OSCR
OSCC
Pin Description
Symbol
Function
1
GND
IC ground
2
VS
Supply Voltage
3
REL
Relay driver
4
LD
Lamp failure detection
5
OSCC
Cap. oscillator
6
OSCR
Res. oscillator
7
SI
Start input (49a)
8
OPL
Output pilot lamp
3
4917C–AUTO–10/07
3. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters
Pin
Symbol
Value
Unit
2
VS
16.5
V
TJ
150
°C
Ambient temperature range
Tamb
–40 to +95
°C
Storage temperature range
Tstg
–55 to +150
°C
Thermal resistance junction
ambient DIP8
Rthjc
110
K/W
Thermal resistance junction
ambient SO8
Rthjc
160
K/W
Supply voltage
Junction temperature
4. Electrical Characteristics
Parameters
Pin
Symbol
Supply voltage range
2
VS (+49a)
Relay output current
3
IRel
300
mA
3
VRel
1
1.5
V
V
3
IRelr
100
µA
Relay saturation voltage
Test Conditions
I = 130 mA
I = 250 mA
Relay leakage current
Min.
Typ.
Max.
9 to 15
Unit
V
Values for T = 25°C
Start delay
ton
10
ms
55
ms
Delay time for output OPL
OPL
tDel
45
Switch off delay time output OPL
in case of short circuit
OPL
tDel
1.5
2.4
ms
Voltage threshold for short circuit
detection at output OPL
OPL
Vth
36
44
% of Us
Output current at OPL
OPL
IO
10
25
mA
Saturation voltage at OPL
OPL
VSATO
300
mV
Control signal threshold K1 for
outage detection without trailer
operation
VS = 9V
VS = 13V
VS = 15V
Vk1
47.5
54.2
58
50
57
61
52.2
59.9
64.1
mV
mV
mV
Control signal threshold K4 for
outage detection with trailer
operation
VS = 9V
VS = 13V
VS = 15V
Vk4
96
109
115
98
111
118
100
113
120
mV
mV
mV
Delta f1
–5
+5
%
Frequency tolerance
Bright period
Basic frequency
Delta f1
47
53
%
Bright period
Frequency doubling
Delta f2
37
45
%
Frequency increase
Lamp outage
f2
2.15 × f
2.3 × f
Hz
Leakage increase
49a to GND
RI
5
kΩ
Lamp load
4
PL
10
W
ATA2069
4917C–AUTO–10/07
ATA2069
5. Ordering Information
Extended Type Number
Package
Remarks
ATA2069-3ASY
DIP8
Tubed, Pb-free
ATA2069-TASY
SO8
Tubed, Pb-free
ATA2069-TAQY
SO8
Taped and reeled, Pb-free
6. Package Information
Package: DIP8
Dimensions in mm
9.8 max.
7.62±0.15
9.6±0.1
0.3 B
A
2.5
3.6±0.1
4.2±0.3
6.7
1.8
1.2±0.3
0.53±0.05
2.54 nom.
0.4 A
6.3±0.1
0.36 max.
3 x 2.54 = 7.62 nom.
B
8.75±0.8
1.54
0.65
8
5
technical drawings
according to DIN
specifications
1
4
Drawing-No.: 6.543-5040.01-4
Issue: 1; 16.01.02
5
4917C–AUTO–10/07
Package: SO 8
Dimensions in mm
5±0.2
4.9±0.1
0.1+0.15
1.4
0.2
3.7±0.1
0.4
1.27
3.8±0.1
6±0.2
3.81
8
5
technical drawings
according to DIN
specifications
1
4
Drawing-No.: 6.541-5031.01-4
Issue: 1; 15.08.06
7. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision
mentioned, not to this document.
6
Revision No.
History
4917C-AUTO-10/07
• Put datasheet in a new template
• Section 5 “Ordering Information” on page 5 changed.
4917B-AUTO-03/06
• Section 5 “Ordering Information” on page 5 changed.
ATA2069
4917C–AUTO–10/07
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4917C–AUTO–10/07
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