U6043B Datasheet, PDF (5/9 Pages) ATMEL Corporation – FLASHER IC WITH 19-M SHUNT

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 kW, 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
Pin 2 and 6
Pin 2 and 6
Pin 2 and 6
Pin 8
Pin 3
DIP 8
SO8
DIP 8
SO8
Symbol
V_S
I_FSM
I_FSM
I_FSM
I_O
P_tot
P_tot
P_tot
P_tot
T_J
T_amb
T_stg
Value
16.5
1.5
1.0
50
0.3
420
340
690
560
150
-40 to +95
-55 to +150
Unit
V
A
A
mA
A
mW
mW
mW
mW
°C
°C
°C
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