U2044B Datasheet, PDF (4/6 Pages) TEMIC Semiconductors – Dual Output Flasher

U2044B
Electrical Characteristics
Typical values under normal operation in application circuit figure 1, V_S (+30) = 12 V.
Reference point ground (–31), T_amb = 25°C, unless otherwise specified.
Parameters
Test Conditions / Pins Symbol Min.
Typ.
Supply voltage range
Supply current,
switches open
Pins 5, 9, 12
V_S
8
Pins 5, 9, 12
I_S
Output current for relay
Pins 11, 13
I_O
driver
Saturation voltage
R_L = 82 W Pins 11, 13
V_S = 8 V
V_O
V_S = 12 V
Relay coil resistance
R_L
60
Relay output,
reverse current
Pins 11, 13
I_O
Start delay
t_ON
(first bright phase)
Control signal threshold
Tolerance of control signal
threshold
Temperature coefficient of
control signal threshold
V_S = 9 V
Pin 8
V_S = 13.5 V
V_S = 16 V
V_S = 9 to 16 V, Pin 8
T_amb = –40 to +100°C
V_S = 13.5 V Pin 8
V_S
70.6
85.0
93.0
–6
T_K
10
Clamping voltage
Relay output overvoltage
detection (relay disabled)
T_amb = –40 to +100°C
T_amb = –40 to +100°C
V₁₂
25.0
27.5
V₁₂
18
20
Max. Unit
18
V
10
mA
300
mA
1.0
V
1.2
V
W
0.1
mA
10
ms
mV
mV
mV
+6
%
mV/K
30.0
V
22
V
Tolerances
V_S = 9 to 18 V, T_amb = –40 to +100°C
Parameters
Frequency determining
resistor
Frequency determining
capacitor
Frequency tolerance
(normal flashing basic fre-
quency f₁ not including the
tolerance of the external
components R₁ and C₁)
Bright period (basic fre-
quency f₁)
Bright period
(control frequency f₂)
Frequency increase
(lamp failure)
Lamp load
Test Conditions / Pins
Symbol Min.
Typ.
Max.
Unit
R₁
6.8
510
kW
C₁
47
mF
Df₁
–5
+5
%
DF₁
47
Df₂
37
f₂
2.15 f₁
P_L
1
53
%
45
%
2.3 f₁ Hz
W
4 (6)
TELEFUNKEN Semiconductors
Rev. A1, 25-Feb-97