TELEFUNKEN Semiconductors
U4078B
15
W
25
W
a
110
W
0.22
m
F
Tone ringing
Figure 1
b
93 7575 e
2 kV
10
m
F
Figure 2
Absolute Maximum Ratings
Reference point Pin 7, unless otherwise specified
Parameters
Supply current
Pin 1, 8
Ambient temperature range
Symbol
I
s
T
amb
Value
50
– 10 to + 60
Unit
mA
Storage temperature range
Power dissipation
T
amb
= 60°C
Junction temperature
T
stg
P
tot
T
j
–40 to + 125
360
125
°C
°C
mW
°C
Thermal Resistance
Parameters
Junction ambient
Symbol
R
thJA
Value
180
Unit
K/W
Electrical Characteristics
Reference point Pin 7, T
amb
= – 10 to + 60°C, V
B
= 15 V, unless otherwise specified
Parameters
Supply current
Test Conditions / Pin
Symbol
Min
Typ
420
10
200
26
100
150
7
32.5
0.67
10
38
1
32/f
clock
3
13
48.5
30
32
12.5
Max
500
15
Unit
f
osc
= 65 to 87 kHz
Pin 1, 8
I
s
V
TH
µA
V
Threshold voltage for
slope identification
Audio impedance
Pin 3 open
f = 300 to 3400 Hz
V
1,8
= 1
@
5 V
rms
I
z
= 1 mA
1. phase
2. phase
R
kΩ
V
Internal voltage limitation
Leakage current
Base current (PNP open)
Oscillator frequency range
Duty-cycle
Interrupted (pause) time
of the output signal
Pin 5
Pin 5
Pin 6
Pin 6
V
z
i
5
i
5
I
B(5)
f
osc
µΑ
µΑ
µA
kHz
TEMIC [ TEMIC SEMICONDUCTORS ]
