Datasheet

LT1790
8
1790fb
3.3V ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the specifi ed
temperature range, otherwise specifi cations are at T
A
= 25°C. C
L
= 1μF and V
IN
= 3.8V, unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage (Notes 3, 4) LT1790A 3.29835
–0.05
3.3 3.30165
0.05
V
%
LT1790B 3.2967
–0.10
3.3 3.3033
0.10
V
%
LT1790AC
l
l
3.29604
–0.120
3.3 3.30396
0.120
V
%
LT1790AI
l
l
3.29423
–0.175
3.3 3.30578
0.175
V
%
LT1790BC
l
l
3.29093
–0.275
3.3 3.30908
0.275
V
%
LT1790BI
l
l
3.28639
–0.4125
3.3 3.31361
0.4125
V
%
Output Voltage Temperature Coeffi cient (Note 5) T
MIN
≤ T
A
≤ T
MAX
LT1790A
LT1790B
l
l
5
12
10
25
ppm/°C
ppm/°C
Line Regulation 3.8V ≤ V
IN
≤ 18V
l
50 170
220
ppm/V
ppm/V
Load Regulation (Note 6) I
OUT
Source = 5mA
l
80 160
250
ppm/mA
ppm/mA
I
OUT
Sink = 3mA
l
70 110
300
ppm/mA
ppm/mA
Dropout Voltage (Note 7) V
IN
– V
OUT
, ΔV
OUT
= 0.1%
I
OUT
= 0mA
I
OUT
Source = 5mA
I
OUT
Sink = 3mA
l
l
l
50 100
120
450
250
mV
mV
mV
mV
Supply Current No Load
l
35 60
80
μA
μA
Minimum Operating Current—
Negative Output (See Figure 7)
V
OUT
= –3.3V, 0.1% 100 125 μA
Turn-On Time C
LOAD
= 1μF 700 μs
Output Noise (Note 8) 0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
50
67
μV
P-P
μV
RMS
Long-Term Drift of Output Voltage (Note 9) 50 ppm/√kHr
Hysteresis (Note 10) ΔT = 0°C to 70°C
ΔT = –40°C to 85°C
l
l
25
40
ppm
ppm