LTC1258CS8-4.1 データシートの表示（PDF） - Linear Technology
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LTC1258CS8-4.1 Datasheet PDF : 8 Pages
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LTC1258 Series
ELECTRICAL CHARACTERISTICS
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 (VIN – VOUT) when VOUT falls to 0.1% below its
nominal value at VIN = VOUT + 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.
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1258-2.5* Dropout Voltage vs
Output Source Current
100
90 TA = 25oC
80
70
60
50
40
30
20
10
0
0
0.1
1
10
100
OUTPUT SOURCE CURRENT (mA)
1258 G01
LTC1258-2.5* Output Short-
Circuit vs Input Voltage
25
TA = 25°C
OUTPUT SHORTED
20 TO VIN
15
10
5
0
24
6
8 10 12 14
INPUT VOLTAGE (V)
1258-G04
LTC1258-2.5* Input Current vs
Temperature
8
VIN = 2.7V
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1258 G02
LTC1258-2.5* Output Short-
Circuit Current vs Input Voltage
42
TA = 25°C
OUTPUT SHORTED
TO GND
41
2
4
6
8 10
INPUT VOLTAGE (V)
12 14
1258-G05
*Similar performance characteristics can be expected for all voltage options.
4
LTC1258 Series Output Short-
Circuit Current vs Temperature
70
TA = 25°C
60 VIN = VOUT(NOM) + 0.2V
50
OUTPUT
SHORTED
TO GND
40
30
20
10
OUTPUT
SHORTED
5
TO VIN
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1258 G03
LTC1258 Series Load Regulation
5
4
TA = 25°C
VIN = VOUT(NOM) + 0.2V
3
SINKING
2
1
0
SOURCING
–1
–2
–3
–4
–5
0
0.1
1
10
100
OUTPUT CURRENT (mA)
1258 G06
1258sfb
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