LT1790 Просмотр технического описания (PDF) - Linear Technology
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LT1790 Datasheet PDF : 24 Pages
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LT1790
2.5V ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the specified
temperature range, otherwise specifications are at TA = 25°C. CL = 1µF and VIN = 3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage (Notes 3, 4)
LT1790A
2.49875 2.5 2.50125
V
– 0.05
0.05
%
LT1790B
2.4975
2.5
2.5025
V
– 0.10
0.10
%
LT1790AC
q 2.4970
2.5
2.5030
V
q –0.120
0.120
%
LT1790AI
q 2.49563 2.5 2.50438
V
q –0.175
0.175
%
LT1790BC
q 2.49313 2.5 2.50688
V
q –0.275
0.275
%
LT1790BI
q 2.48969 2.5 2.51031
V
q –0.4125
0.4125
%
Output Voltage Temperature Coefficient (Note 5)
Line Regulation
TMIN ≤ TA ≤ TMAX
LT1790A
LT1790B
3V ≤ VIN ≤ 18V
q
5
10
ppm/°C
q
12
25
ppm/°C
50
170
ppm/V
q
220
ppm/V
Load Regulation (Note 6)
IOUT Source = 5mA
80
160
ppm/mA
q
250
ppm/mA
IOUT Sink = 3mA
70
110
ppm/mA
q
300
ppm/mA
Dropout Voltage (Note 7)
Supply Current
VIN – VOUT, ∆VOUT = 0.1%
IOUT = 0mA
q
IOUT Source = 5mA
q
IOUT Sink = 3mA
q
No Load
q
50
100
mV
120
mV
450
mV
250
mV
35
60
µA
80
µA
Minimum Operating Current—
Negative Output (See Figure 7)
VOUT = – 2.5V, 0.1%
100
125
µA
Turn-On Time
Output Noise (Note 8)
Long-Term Drift of Output Voltage (Note 9)
Hysteresis (Note 10)
CLOAD = 1µF
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
∆T = 0°C to 70°C
∆T = – 40°C to 85°C
700
µs
32
µVP-P
48
µVRMS
50
ppm/√kHr
q
40
ppm
q
100
ppm
1790fa
5
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