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Part Name
Description
TDA4718A View Datasheet(PDF) - Siemens AG
Part Name
Description
Manufacturer
TDA4718A
Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS
Siemens AG
TDA4718A Datasheet PDF : 21 Pages
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TDA 4700
TDA 4718
Characteristics
(cont’d)
V
S
= 11 to 30 V;
T
A
= – 25 to 85
°
C
Parameter
Symbol
Limit Values
min.
typ. max.
Unit Test
Condition
Oscillator (VCO)
Frequency range
Frequency change
Frequency change
Tolerance
Fall time sawtooth
RC combination
VCO
Ramp Generator
f
VCO
∆
f
/
f
VCO
∆
f
/
f
VCO
∆
f
/
f
VCO
t
t
C
T
R
T
40
–1
–7
0.82
5
100 000 Hz
0.5
%
1
%
7
%
1
µ
s
10
µ
s
47
nF
700
k
Ω
14 V
±
20 %
25 V
±
20 %
∆
R
T
= 0;
∆
C
T
= 0
C
T
= 1 nF
C
T
= 10 nF
Frequency range
Maximum voltage
at
C
R
Minimum voltage
at
C
R
Input current
through
R
R
Current
transformation ratio
Synchronization
f
40
V
H
V
L
I
RR
0
I
RR
/
I
CR
100 000 Hz
5.5
V
1.8
V
400
µ
A
1/4
Sync output
Sync input
Input current
V
Q H
4
V
Q L
V
I H
2
V
I L
–
I
I
V
I
Q H
= – 200
µ
A
0.4
V
I
Q L
= 1.6 mA
V
0.8
V
5
µ
A
Semiconductor Group
13
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