LT1790 Ver la hoja de datos (PDF) - Linear Technology
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LT1790 Datasheet PDF : 24 Pages
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LT1790
1.25V ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the specified
temperature range, otherwise specifications are at TA = 25°C. CL = 1µF and VIN = 2.6V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage (Notes 3, 4)
LT1790A
1.24937 1.250 1.25062
V
– 0.05
0.05
%
LT1790B
1.24875 1.250 1.25125
V
– 0.10
0.10
%
LT1790AC
q 1.24850 1.250 1.25150
V
q –0.120
0.120
%
LT1790AI
q 1.24781 1.250 1.25219
V
q –0.175
0.175
%
LT1790BC
q 1.24656 1.250 1.25344
V
q –0.275
0.275
%
LT1790BI
q 1.24484 1.250 1.25516
V
q –0.4125
0.4125
%
Output Voltage Temperature Coefficient (Note 5)
TMIN ≤ TA ≤ TMAX
LT1790A
LT1790B
q
5
10
ppm/°C
q
12
25
ppm/°C
Line Regulation
2.6V ≤ VIN ≤ 18V
50
170
ppm/V
q
220
ppm/V
Load Regulation (Note 6)
IOUT Source = 5mA, VIN = 2.8V
q
100
160
250
ppm/mA
ppm/mA
IOUT Sink = 1mA, VIN = 3.2V
q
120
180
250
ppm/mA
ppm/mA
Minimum Operating Voltage (Note 7)
Supply Current
VIN, ∆VOUT = 0.1%
IOUT = 0mA
IOUT Source = 5mA
IOUT Sink = 1mA
No Load
1.95
2.15
V
q
2.50
V
q
2.90
V
q
2.95
V
35
60
µA
q
75
µA
Minimum Operating Current—
Negative Output (See Figure 7)
VOUT = – 1.25V, ±0.1%
100
125
µA
Turn-On Time
Output Noise (Note 8)
Long-Term Drift of Output Voltage (Note 9)
CLOAD = 1µF
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
250
µs
10
µVP-P
14
µVRMS
50
ppm/√kHr
Hysteresis (Note 10)
∆T = 0°C to 70°C
q
40
ppm
∆T = – 40°C to 85°C
q
100
ppm
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