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參數(shù)資料
| 型號： | LTC1258-5 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Micropower Low Dropout References(5V輸出,微功耗，低壓差電壓基準) |
| 中文描述： | 微功率低壓差參考（5V的輸出，微功耗，低壓差電壓基準） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 156K |
| 代理商： | LTC1258-5 |
3
LTC1258 Series
ELECTRICAL CHARACTERISTICS
The
G
denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25
°
C.
V
IN
= V
OUT(NOMINAL)
+ 0.2V, I
OUT
= 0mA, FB = OUT for the LTC1258 unless otherwise noted.
SYMBOL
PARAMETER
V
IN
Input Voltage Range
I
IN
Input Current
CONDITIONS
MIN
TYP
MAX
12.6
6.5
8.5
2.3945
2.5037
3.0045
4.102
5.0075
2.396
2.5052
3.006
4.1035
5.009
UNITS
G
V
FB = OUT for LTC1258
4
μ
A
μ
A
V
V
V
V
V
V
V
V
V
V
G
V
OUT
Output Voltage (Note 4)
LTC1258 (S8), FB = OUT
LTC1258-2.5 (S8)
LTC1258-3 (S8)
LTC1258-4.1 (S8)
LTC1258-5 (S8)
LTC1258 (MS8), FB = OUT
LTC1258-2.5 (MS8)
LTC1258-3 (MS8)
LTC1258-4.1 (MS8)
LTC1258-5 (MS8)
0.1Hz
≤
f
≤
10Hz
T
MIN
≤
T
J
≤
T
MAX
(S8)
T
MIN
≤
T
J
≤
T
MAX
(MS8)
V
IN
= (V
OUT(NOMINAL)
+ 0.2V) to 12.6V
Sourcing 0mA to 10mA
Sinking 0mA to 2mA
2.3755
2.4963
2.9955
4.090
4.9925
2.374
2.4948
2.994
4.0885
4.991
2.385
2.5
3
4.096
5
2.385
2.5
3
4.096
5
8
15
e
n
TC
Output Voltage Noise (Note 5)
Output Voltage Temp Coefficient (Note 6)
ppm
P-P
ppm/
°
C
ppm/
°
C
ppm/V
mV/mA
mV/mA
mV/mA
G
G
40
60
120
0.3
4.0
6.5
V
OUT
/V
IN
V
OUT
/I
OUT
Line Regulation
Load Regulation (Note 7)
G
30
0.1
1.75
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
LTC1258, 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 LTC1258 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 (Electrostatic Discharge) sensitive device. Extensive use of
ESD protection devices are used internal to the LTC1258, 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.
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