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LT1533CS Datenblatt(PDF) 4 Page - Linear Technology

Teilenummer LT1533CS
Bauteilbeschribung  Ultralow Noise 1A Switching Regulator
PDF  20 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1533CS Datenblatt(HTML) 4 Page - Linear Technology

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LT1533
TYPICAL PERFORMANCE CHARACTERISTICS
SWITCH CURRENT (A)
0
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.6
1533 G03
0.2
0.4
0.8
125
°C
25
°C
1.0
85
°C
DUTY CYCLE (%)
0
0
–50
–100
–150
–200
–250
–300
10
20
30
125
°C
25
°C
40
1533 G02
50
Change in ILIM vs DC
Switch Voltage Drop
TEMPERATURE (
°C)
–50
150
1533 G05
0
50
100
–2.30
–2.35
–2.40
–2.45
–2.50
–2.55
–2.60
–2.65
–2.70
35
30
25
20
15
–25
25
75
125
VNFB
INFB
Negative Feedback Voltage and
Input Current vs Temperature
Feedback Voltage and Input
Current vs Temperature
Switching Frequency vs
Feedback Pin Voltage
FEEDBACK PIN VOLTAGE (V)
0
0.1
0.2
0.3
0.4
1533 G07
0.5
120
100
80
60
40
20
0
0.6
Error Amplifier Output Current
FEEDBACK PIN VOLTAGE FROM NOMINAL (mV)
–400 –300 –200 –100
400
1533 G08
0
100
300
200
500
400
300
200
100
0
–100
–200
–300
–400
–500
125
°C
–40
°C
25
°C
TEMPERATURE (
°C)
1533 G09
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
25
75
–25
0
50
100 125
VC PIN CLAMP
VOLTAGE
VC PIN
THRESHOLD
VC Pin Threshold and Clamp
Voltage vs Temperature
TEMPERATURE (
°C)
–50
1.30
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
1533 G04
–25
25
VFB
IFB
100 125
150
JUNCTION TEMPERATURE (
°C)
2.60
2.65
2.70
1533 G01
2.55
2.50
2.45
–50
0
50
75
–25
25
100 125
150
Minimum Input Voltage vs
Temperature
TEMPERATURE (
°C)
1533 G06
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
–50
25
75
150
–25
0
50
100 125
gm = ∆IVC/∆VFB
Error Amplifier Transconductance
vs Temperature



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