LT3050MPMSE Ver la hoja de datos (PDF) - Linear Technology
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LT3050MPMSE
Linear Technology
LT3050MPMSE Datasheet PDF : 26 Pages
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LT3050 Series
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted.
Output Noise Spectral Density
CREF/BYP = 0, CFF = 0
10
Output Noise Spectral Density
vs CREF/BYP, CFF = 0
10
VOUT = 5V
CREF/BYP = 100pF
Output Noise Spectral Density
vs CFF, CREF/BYP = 10nF
10
1
0.1
0.01
10
VOUT = 5V
VOUT = 3.3V
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.5V
VOUT = 1.2V
VOUT = 0.6V
COUT = 10μF
IL = 100mA
100
1K
10K
FREQUENCY (Hz)
100k
3050 G22
1
VOUT = 0.6V
0.1
CREF/BYP = 10nF
COUT = 10μF
IL = 100mA
0.01
10
100
CREF/BYP = 1nF
1k
10k
FREQUENCY (Hz)
100k
3050 G23
1
CFF = 10nF
CFF = 0
0.1
VOUT = 5V
COUT = 10μF
0.01 IL = 100mA
10
100
CFF = 1nF
CFF = 100pF
1k
10k
FREQUENCY (Hz)
100k
3050 G23a
RMS Output Noise vs Load
Current vs CREF/BYP
110
VOUT = 0.6V
100 COUT = 10μF
CREF/BYP = 0
90
80
CREF/BYP = 10pF
70
60
50
CREF/BYP = 100pF
40
30 CREF/BYP = 1nF
20 CREF/BYP = 10nF
10
CREF/BYP = 100nF
0
0.01
0.1
1
10
100
LOAD CURRENT (mA)
3050 G24
Startup Time
vs REF/BYP Capacitor
60
RMS Output Noise vs Load
Current CREF/BYP = 10nF
170
160 fOUT = 10Hz TO 100kHz
150 COUT = 10μF
140
130
VOUT = 2.5V
120
110
VOUT = 1.8V
100
VOUT = 1.5V
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
VOUT = 5V
VOUT = 3.3V
VOUT = 1.2V
VOUT = 0.6V
10
100
LOAD CURRENT (mA)
3050 G25
5V 10Hz to 100kHz Output Noise
CREF/BYP = 10nF, CFF = 0
RMS Output Noise
vs Feedforward Capacitor (CFF)
120
110 VOUT = 5V
100
VOUT = 3.3V
90
VOUT = 2.5V
80
f = 10Hz TO 100kHz
CREF/BYP = 10nF
COUT = 10μF
IFB-DIVIDER = 5μA
IL = 100mA
70
60
50
40
30
20 VOUT = 1.8V VOUT = 1.2V VOUT = 0.6V
10
VOUT = 1.5V
0
10p
100p
1n
10n
FEEDFORWARD CAPACITOR, CFF (F)
3050 G25a
5V 10Hz to 100kHz Output Noise
CREF/BYP = 10nF, CFF = 10nF
50
40
VOUT
VOUT
100μV/DIV
100μV/DIV
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
REF/BYP CAPACITOR (nF)
3050 G33
COUT = 10μF
1ms/DIV
ILOAD = 100mA
3050 G27
COUT = 10μF
1ms/DIV
ILOAD = 100mA
3050 G26
3050fa
9
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