Datasheet
LT1790
13
1790fc
For more information www.linear.com/LT1790
2.048V TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
70 90 110
2.056
2.054
2.052
2.050
2.048
2.046
2.044
2.042
17902.048 G01
–30 –10 10 30 50 130
FOUR TYPICAL PARTS
INPUT-OUTPUT VOLTAGE (V)
0.1
0.1
1
10
0.3
17902.048 G02
OUTPUT CURRENT (mA)
0
0.70.2
0.4 0.5 0.6
T
A
= 25°C
T
A
= 125°C
T
A
= –55°C
TEMPERATURE (°C)
–50
–50
VOLTAGE DIFFERENTIAL (mV)
–30
10
30
50
70
130
17902.048 G03
–10
10 130
50
–10 110
30
–30 90
70
90
110
5mA
1mA
100µA
OUTPUT CURRENT (mA)
0.1
–2000
OUTPUT VOLTAGE CHANGE (ppm)
–1600
–1200
–800
–400
1 10
17902.048 G04
0
–1800
–1400
–1000
–600
–200
T
A
= 25°C
T
A
= 125°C
T
A
= –55°C
OUTPUT CURRENT (mA)
0.1
0
OUTPUT VOLTAGE CHANGE (ppm)
400
800
1200
1600
1 10
17902.048 G05
2000
200
600
1000
1400
1800
T
A
= –40°C
T
A
= 25°C
T
A
= 125°C
INPUT VOLTAGE (V)
0
SUPPLY CURRENT (µA)
40
50
60
20
17902.048 G06
30
20
0
5
10
15
10
80
70
T
A
= –55°C
T
A
= 25°C
T
A
= 125°C
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.054
2.052
2.050
2.048
2.046
2.044
2.042
4 8 12 16
17902.048 G07
2020 6 10 14 18
T
A
= –55°C
T
A
= 25°C
T
A
= 125°C
FREQUENCY (Hz)
–60
POWER SUPPLY REJECTION RATIO (dB)
10
0
20
–70
–80
–10
–40
–20
–30
–50
100 10k 100k 1M
17902.048 G08
1k
C
L
= 1µF
FREQUENCY (Hz)
100
1
OUTPUT IMPEDANCE (Ω)
10
100
1000
1k 10k 100k
17902.048 G09
C
L
= 0.47µF
C
L
= 4.7µF
C
L
= 1µF
Output Voltage Temperature Drift
Load Regulation (Sourcing)
Minimum Input-Output Voltage
Differential (Sourcing)
Minimum Input-Output Voltage
Differential (Sinking)
Load Regulation (Sinking) Supply Current vs Input Voltage
Line Regulation Output Impedance vs Frequency
Power Supply Rejection Ratio
vs Frequency
Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options,
the curves can be estimated based on the 2.5V and 5V curves.
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