參數(shù)資料
型號： LTC1798CS8-2.5
廠商： LINEAR TECHNOLOGY CORP
元件分類： 基準電壓源/電流源
英文描述： Micropower Low Dropout References(2.5V輸出,微功耗，低壓差穩(wěn)壓器)
中文描述： 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁數(shù)： 3/8頁
文件大?。?/td> 149K
代理商： LTC1798CS8-2.5
LTC1798 Series
3
The
G
denotes specifications which apply over the full specified temperature range, otherwise specifications are at T
A
= 25
°
C.
V
IN
= V
OUT(NOMINAL)
+ 0.2V, I
OUT
= 0mA unless otherwise noted. FB = OUT for the LTC1798.
SYMBOL
e
n
TC
V
OUT
/V
IN
V
OUT
/I
OUT
PARAMETER
Output Voltage Noise (Note 5)
Output Voltage Temp Coefficient (Note 6)
Line Regulation
Load Regulation (Note 7)
CONDITIONS
0.1Hz
≤
f
≤
10Hz
T
MIN
≤
T
J
≤
T
MAX
V
IN
= (V
OUT(NOMINAL)
+ 0.2V) to 12.6V
Sourcing 0mA to 10mA
Sinking 0mA to 2mA
MIN
TYP
8
15
30
0.1
1.75
MAX
UNITS
ppm
P-P
ppm/
°
C
ppm/V
mV/mA
mV/mA
mV/mA
G
40
120
0.3
4.0
6.5
G
G
G
I
SC
Short-Circuit Output Current
V
OUT
Shorted to GND
V
OUT
Shorted to V
IN
I
OUT
= 0,
V
OUT
≤
0.1%
I
OUT
= 10mA,
V
OUT
≤
0.1%
T = –40
°
C to 85
°
C
T = 0
°
C to 70
°
C
LTC1798, OUT = FB
20
2
40
4
mA
mA
mV
mV
ppm
ppm
nA
V
DO
Dropout Voltage (Note 8)
G
G
100
200
V
HYST
Output Hysteresis (Note 9)
200
50
10
I
FB
FB Pin Input Current
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
The LTC1798 is guaranteed functional over the operating
temperature range of –40
°
C to 100
°
C.
Note 3:
If the part is stored outside of the specified operating temperature
range, the output may shift due to hysteresis.
Note 4:
ESD (Electostatic Discharge) sensitive device. Extensive use of
ESD protection devices are used internal to the LTC1798, however, high
electrostatic discharge can damage or degrade the device. Use proper ESD
handling precautions.
Note 5:
Peak-to-peak noise is measured with a single pole highpass filter
at 0.1Hz and 2-pole lowpass filter at 10Hz.
Note 6:
Temperature coefficient is the change in output voltage divided by
the nominal output voltage divided by the specified temperature range.
Note 7:
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 8:
Dropout voltage is (V
IN
– V
OUT
) when V
OUT
falls to 0.1% below its
nominal value at V
IN
= V
OUT
+ 0.5V.
Note 9:
Hysteresis in output voltage is created by package stress that
differs depending on whether the IC was previously at a higher or lower
temperature. Output voltage is always measured at 25
°
C, but the IC is
cycled hot or cold before successive measurements. Hysteresis is not
normally a problem for operational temperature excursions where the
instrument might be stored at high or low temperature.
LTC1798-2.5* Dropout Voltage
vs Output Source Current
LTC1798-2.5*
Input Current vs Temperature
LTC1798 Series Output Short-
Circuit Current vs Temperature
*Similar performance characteristics can be expected for all voltage options.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR U
OUTPUT SOURCE CURRENT (mA)
D
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1798 G01
0.1
T
A
= 25
°
C
TEMPERATURE (
°
C)
–50 –25
I
μ
A
150
1798 G02
0
25
50
75
100 125
8
7
6
5
4
3
2
1
0
V
IN
= 2.7V
TEMPERATURE (
°
C)
–50 –25
O
150
1798 G03
0
25
50
75
100 125
70
60
50
40
30
20
10
5
0
T
A
= 25
°
C
V
IN
= V
OUT(NOM)
+ 0.2V
OUTPUT
SHORTED
TO V
IN
OUTPUT
SHORTED
TO GND
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