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LT1790BCS6-2.048 Datasheet(PDF) 9 Page - Linear Technology

Part # LT1790BCS6-2.048
Description  Micropower SOT-23 Low Dropout Reference Family
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1790BCS6-2.048 Datasheet(HTML) 9 Page - Linear Technology

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9
LT1790
1790fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage (Notes 3, 4)
LT1790A
4.9975
5
5.0025
V
–0.05
0.05
%
LT1790B
4.995
5
5.005
V
–0.10
0.10
%
LT1790AC
q
4.99400
5
5.00600
V
q
–0.120
0.120
%
LT1790AI
q
4.99125
5
5.00875
V
q
–0.175
0.175
%
LT1790BC
q
4.98625
5
5.01375
V
q
–0.275
0.275
%
LT1790BI
q
4.97938
5
5.02063
V
q
–0.4125
0.4125
%
Output Voltage Temperature Coefficient (Note 5)
TMIN ≤ TA ≤ TMAX
LT1790A
q
5
10
ppm/
°C
LT1790B
q
12
25
ppm/
°C
Line Regulation
5.5V
≤ VIN ≤ 18V
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)
VIN – VOUT, ∆VOUT = 0.1%
IOUT = 0mA
50
100
mV
q
120
mV
IOUT Source = 5mA
q
450
mV
IOUT Sink = 3mA
q
250
mV
Supply Current
No Load
35
60
µA
q
80
µA
Minimum Operating Current—
VOUT = – 5V, 0.1%
100
125
µA
Negative Output (See Figure 7)
Turn-On Time
CLOAD = 1µF
700
µs
Output Noise (Note 8)
0.1Hz
≤ f ≤ 10Hz
80
µVP-P
10Hz
≤ f ≤ 1kHz
118
µVRMS
Long-Term Drift of Output Voltage (Note 9)
50
ppm/
√kHr
Hysteresis (Note 10)
∆T = 0°C to 70°C
q
40
ppm
∆T = –40°C to 85°C
q
100
ppm
The q denotes specifications that apply over the specified temperature
range, otherwise specifications are at TA = 25°C. CL = 1µF and VIN = 5.5V, unless otherwise noted.
5V ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The LT1790 is guaranteed functional over the operating
temperature range of – 40
°C to 125°C. The LT1790-1.25 at 125°C is
typically less than 2% above the nominal voltage. The other voltage
options are typically less than 0.25% above their nominal voltage.
Note 3: If the part is stored outside of the specified temperature range, the
output voltage may shift due to hysteresis.
Note 4: ESD (Electrostatic Discharge) sensitive device. Extensive use of
ESD protection devices are used internal to the LT1790, however, high
electrostatic discharge can damage or degrade the device. Use proper ESD
handling precautions.
Note 5: Temperature coefficient is measured by dividing the change in
output voltage by the specified temperature range. Incremental slope is
also measured at 25
°C.
Note 6: Load regulation is measured on a pulse basis from no load to the
specified load current. Output changes due to die temperature change
must be taken into account separately.
Note 7: Excludes load regulation errors.
Note 8: Peak-to-peak noise is measured with a single pole highpass filter
at 0.1Hz and a 2-pole lowpass filter at 10Hz. The unit is enclosed in a still
air environment to eliminate thermocouple effects on the leads. The test
time is 10 seconds. Integrated RMS noise is measured from 10Hz to 1kHz
with the HP3561A analyzer.


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