Datasheet

LT1763 Series
12
1763fg
TYPICAL PERFORMANCE CHARACTERISTICS
Output Noise Spectral Density
C
BYP
= 0
LT1763
Minimum Input Voltage
Load Regulation
TEMPERATURE (°C)
–50
MINIMUM INPUT VOLTAGE (V)
0
50
75
1763 G46
–25
25
100
125
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
I
L
= 1mA
V
OUT
= 1.22V
I
L
= 500mA
TEMPERATURE (°C)
–50
LOAD REGULATION (mV)
100
1763 G47
050–25 25 75 125
5
0
–5
–10
–15
–20
–25
V
IN
= V
OUT(NOMINAL)
+ 1V
$I
L
= 1mA TO 500mA
LT1763
LT1763-5
LT1763-3
LT1763-3.3
LT1763-1.5
LT1763-1.8
LT1763-2.5
FREQUENCY (Hz)
10 1k 10k 100k
1763 G48
100
10
1
0.1
0.01
OUTPUT NOISE SPECTRAL DENSITY (μV/Hz)
C
OUT
= 10μF
I
L
= 500mA
LT1763
LT1763-5
LT1763-1.5
LT1763-2.5
LT1763-1.8
LT1763-3.3
LT1763-3
LT1763-5
10Hz to 100kHz Output Noise
C
BYP
= 1000pF
LT1763-5
10Hz to 100kHz Output Noise
C
BYP
= 0
LT1763-5
10Hz to 100kHz Output Noise
C
BYP
= 100pF
1ms/DIV
V
OUT
100μV/DIV
C
OUT
= 10μF
I
L
= 500mA
1763 G52
1ms/DIV
V
OUT
100μV/DIV
C
OUT
= 10μF
I
L
= 500mA
1763 G53
1ms/DIV
V
OUT
100μV/DIV
C
OUT
= 10μF
I
L
= 500mA
1763 G54
Output Noise Spectral Density
RMS Output Noise
vs Bypass Capacitor
RMS Output Noise
vs Load Current (10Hz to 100kHz)
FREQUENCY (Hz)
10 1k 10k 100k
1763 G49
100
10
1
0.1
0.01
OUTPUT NOISE SPECTRAL DENSITY (μV/Hz)
LT1763
LT1763-5
C
BYP
= 1000pF
C
BYP
= 0.01μF
C
BYP
= 100pF
C
OUT
= 10μF
I
L
= 500mA
C
BYP
(pF)
10
OUTPUT NOISE (μV
RMS
)
160
140
120
100
80
60
40
20
0
100 1000 10000
1763 G50
C
OUT
= 10μF
I
L
= 500mA
f = 10Hz TO 100kHz
LT1763-5
LT1763-3.3
LT1763
LT1763-1.5
LT1763-3
LT1763-2.5
LT1763-1.8
LOAD CURRENT (mA)
0.01
OUTPUT NOISE (μV
RMS
)
160
140
120
100
80
60
40
20
0
0.1 1
1763 G51
10 100 1000
C
OUT
= 10μF
LT1763-5
LT1763-5
LT1763
LT1763
C
BYP
= 0
C
BYP
= 0.01μF