LTC1258 Series

4

1258sfb

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 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.

ELECTRICAL CHARACTERISTICS

TYPICAL PERFORMANCE CHARACTERISTICS

LTC1258-2.5* Dropout Voltage vs

Output Source Current

LTC1258-2.5* Input Current vs

Temperature

LTC1258 Series Output Short-

Circuit Current vs Temperature

LTC1258-2.5* Output Short-

Circuit vs Input Voltage

LTC1258-2.5* Output Short-

Circuit Current vs Input Voltage

LTC1258 Series Load Regulation

OUTPUT SOURCE CURRENT (mA)

100

90

80

70

60

50

40

30

20

10

0

0

1

10

100

1258 G01

0.1

TEMPERATURE (°C)

–50 –25

150

1258 G02

025

50

75

100 125

8

7

6

5

4

3

2

1

0

TEMPERATURE (°C)

–50 –25

150

1258 G03

025

50

75

100 125

70

60

50

40

30

20

10

5

0

OUTPUT

SHORTED

OUTPUT

SHORTED

TO GND

INPUT VOLTAGE (V)

2

25

20

15

10

5

0

4

68

10

1258-G04

12

14

OUTPUT SHORTED

INPUT VOLTAGE (V)

2

42

41

4

68

10

1258-G05

12

14

OUTPUT SHORTED

TO GND

OUTPUT CURRENT (mA)

5

4

3

2

1

0

–1

–2

–3

–4

–5

0

1

10

100

1258 G06

0.1

SINKING

SOURCING

*Similar performance characteristics can be expected for all voltage options.