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參數(shù)資料
| 型號： | TDA4718A |
| 廠商： | SIEMENS A G |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| 中文描述： | 0.07 A SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, PDIP18 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大?。?/td> | 436K |
| 代理商： | TDA4718A |
TDA 4700
TDA 4718
Semiconductor Group
13
Oscillator (VCO)
Frequency range
Frequency change
Frequency change
Tolerance
Fall time sawtooth
RC combination
VCO
f
VCO
f
/
f
VCO
f
/
f
VCO
f
/
f
VCO
t
t
C
T
R
T
40
– 1
– 7
0.82
5
0.5
1
10
100 000
1
7
47
700
Hz
%
%
%
μ
s
μ
s
nF
k
14 V
±
20 %
25 V
±
20 %
R
T
= 0;
C
T
= 0
C
T
= 1 nF
C
T
= 10 nF
Ramp Generator
Frequency range
Maximum voltage
at
C
R
Minimum voltage
at
C
R
Input current
through
R
R
Current
transformation ratio
f
V
H
V
L
I
RR
I
RR
/
I
CR
40
0
5.5
1.8
1/4
100 000
400
Hz
V
V
μ
A
Synchronization
Sync output
Sync input
Input current
V
Q H
V
Q L
V
I H
V
I L
–
I
I
4
2
0.4
0.8
5
V
V
V
V
μ
A
I
Q H
= – 200
μ
A
I
Q L
= 1.6 mA
Characteristics
(cont’d)
V
S
= 11 to 30 V;
T
A
= – 25 to 85
°
C
Parameter
Symbol
Limit Values
Unit
Test
Condition
min.
typ.
max.
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