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參數(shù)資料
| 型號： | U644B |
| 英文描述： | Flasher, 18-m Shunt, Extremly Low Current Consumption |
| 中文描述： | 閃光器，18米分流，Extremly低電流消耗 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大小： | 202K |
| 代理商： | U644B |
U644B
TELEFUNKEN Semiconductors
Rev. A2, 25-Feb-97
4 (6)
Absolute Maximum Ratings (continued)
Parameters
Symbol
T
j
T
amb
T
amb
T
stg
Value
150
Unit
°
C
°
C
°
C
°
C
Junction temperature
Ambient temperature range
DIP8
SO8
–40 to +120
–40 to +105
–55 to +150
Storage temperature range
Thermal Resistance
Parameters
Symbol
R
thJA
R
thJA
Value
110
160
Unit
K/W
K/W
Junction ambient
DIP8
SO8
Electrical Characteristics
Typical values under normal operation in application circuit figure 1, V
S
(+49, Pin 2) = 12 V.
Reference point ground (–31), T
amb
= 25
°
C unless otherwise specified
Parameters
Test Conditions / Pin
Symbol
V
S
(+49)
I
S
Min.
Typ.
8 to 18
5
Max.
Unit
V
mA
Supply voltage range
Supply current
Pin 2
Dark phase or
stand-by
Bright phase
I
O =
300 mA
Pin 2
Pin 2
Pin 3
7
Supply current
Relay output,
saturation voltage
Relay output,
reverse current
Relay coil resistance
Relay output overvoltage
detection (relay disabled)
Start delay
(first bright phase)
Frequency determining
resistor
Frequency determining
capacitor
Frequency tolerance (normal flashing, basic frequency
f
1
not including the tolerance of the external compo-
nents R
1
and C
1
)
Bright period (basic frequency f
1
)
Bright period (control frequency f
2
)
Frequency increase (lamp failure)
Control signal threshold
I
S
V
O
6
10
1.3
mA
V
Pin 3
I
O
0.1
mA
R
L
60
19.0
20.2
22.5
V
t
on
10
ms
R
1
6.8
510
k
C
1
47
F
f
1
–6.5
+ 6.5
%
f
1
f
2
f
2
V
R3
V
R3
V
R3
R
P
P
L
45
35
55
45
%
%
Hz
mV
mV
mV
k
W
2.1
f
1
2.4
f
1
V
s
= 18 V
V
s
= 8 V
V
s
= 13.5 V
Pin 7
Pin 7
Pin 7
53
40.5
47.5
57
43.6
51
2
61
46.6
54.5
5.6
Resistance between 49a to ground for stand-by
Lamp load
1
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