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NE5561 Datasheet(PDF) 4 Page - NXP Semiconductors

Part # NE5561
Description  Switched-mode power supply control circuit
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

NE5561 Datasheet(HTML) 4 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
NE/SE5561
Switched-mode power supply control circuit
1994 Aug 31
4
TYPICAL PERFORMANCE CHARACTERISTICS
C (nF)
d max is a function of f
R2
R1
) R2
V
Z )
V
BEQ1
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 RT and CT
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
δ MAX (%)
V4
t
t = R’C
2
4
Q1
R2
V1
C
R1
NE5561
VZ
2
5
NE5561
RT
CT
1.25
1.00
0.75
0.50
0.25
0
25
50
70
100
125
150
NE
SE
AMBIENT TEMPERATURE (
°C)
PT = VCC ICC + (VCC – VZ) IZ
+ [V7 I7 x DUTY CYCLE]
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
6
V4
1000
100
50
30
20
10
5
3
2
1
2
2.5
3
3.5
4
4.5
R=10k
R=20k
R=40k
R=5k
60
50
40
30
20
10
0
1k
10k
100k
1M
10M
FREQUENCY (Hz)
0
1k
10k
100k
1M
10M
FREQUENCY (Hz)
–30
–60
–90
–120
–150
–180
SL00386
Figure 3. Typical Performance Characteristics


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