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參數(shù)資料
| 型號： | SE5561N |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Switched-mode power supply control circuit |
| 中文描述： | 0.04 A SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大小： | 66K |
| 代理商： | SE5561N |
Philips Semiconductors
Product specification
NE/SE5561
Switched-mode power supply control circuit
1994 Aug 31
4
TYPICAL PERFORMANCE CHARACTERISTICS
G
C (nF)
max is a function of f
R2
R1
R2
VZ
VBEQ1
Error Amplifier
Open-Loop Gain
Error Amplifier
Open-Loop Phase
Transfer Curve of Pulse-Width
Modulator Duty Cycle vs Input Voltage
Power Derating Curve
Typical Frequency Plot vs R
T
and C
T
Maximum Duty Cycle vs
Base Voltage on Q1
Start-Up Circuit
Slow-Start Voltage
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
V1
M
δ
MAX (%)
V4
t
t = R’C
2
4
Q1
R2
V1
C
R1
NE5561
V
Z
2
5
NE5561
R
T
C
T
1.25
1.00
0.75
0.50
0.25
0
25
50
70
100
125
150
T
NE
SE
AMBIENT TEMPERATURE (
°
C)
P
T
= V
CC
I
CC
+ (V
CC
– V
Z
) I
Z
+ [V
7
I
7
x DUTY CYCLE]
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
6
V4
(
δ
1000
100
50
30
20
10
5
3
2
1
2
2.5
3
3.5
4
4.5
f
R=10k
R=20k
R=40k
R=5k
60
50
40
30
20
10
0
1k
10k
100k
1M
10M
FREQUENCY (Hz)
P
0
1k
10k
100k
1M
10M
FREQUENCY (Hz)
–30
–60
–90
–120
–150
–180
SL00386
Figure 3. Typical Performance Characteristics
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