U6043B
Pin 8, Start Input
Start condition for flashing: the voltage at Pin 8 has to be below the K3 threshold (flasher
switch closed).
Humidity and dirt may decrease the resistance between 49 a and GND. If this leakage
resistance is > 5 k
W
, the IC is still kept in the off-condition. In this case the voltage at
Pin 8 is between the thresholds of comparators K2 and K3.
During the bright phase the voltage at Pin 8 is above the K2 threshold, during the dark
phase it is below the K3 threshold. For proper start conditions a minimum lamp wattage
of 1 W is required.
Absolute Maximum Ratings
Reference point Pin 1
Parameters
Supply voltage
Surge Forward Current
t
P
= 0.1 ms
t
P
= 300 ms
t
P
= 300 ms
Output current
Power Dissipation
T
amb
= 95°C
T
amb
= 60°C
Junction temperature
Ambient temperature range
Storage temperature range
DIP 8
SO8
DIP 8
SO8
P
tot
P
tot
P
tot
P
tot
T
J
T
amb
T
stg
420
340
690
560
150
-40 to +95
-55 to +150
mW
mW
mW
mW
°C
°C
°C
Pin 2 and 6
Pin 2 and 6
Pin 8
Pin 3
I
FSM
I
FSM
I
FSM
I
O
1.5
1.0
50
0.3
A
A
mA
A
Pin 2 and 6
Symbol
V
S
Value
16.5
Unit
V
Thermal Resistance
Parameters
Junction ambient
DIP8
SO8
Symbol
R
thJA
R
thJA
Value
110
160
Unit
K/W
K/W
5
4726A–AUTO–06/03
ATMEL [ ATMEL CORPORATION ]
