3

LTC1258 Series

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

q

12.6

V

Input Current

FB = OUT for LTC1258

6.5

µA

q

8.5

µA

Output Voltage (Note 4)

LTC1258 (S8), FB = OUT

2.3755

2.385

2.3945

V

LTC1258-2.5 (S8)

2.4963

2.5

2.5037

V

LTC1258-3 (S8)

2.9955

3

3.0045

V

LTC1258-4.1 (S8)

4.090

4.096

4.102

V

LTC1258-5 (S8)

4.9925

5

5.0075

V

LTC1258 (MS8), FB = OUT

2.374

2.385

2.396

V

LTC1258-2.5 (MS8)

2.4948

2.5

2.5052

V

LTC1258-3 (MS8)

2.994

3

3.006

V

LTC1258-4.1 (MS8)

4.0885

4.096

4.1035

V

LTC1258-5 (MS8)

4.991

5

5.009

V

Output Voltage Noise (Note 5)

0.1Hz

≤ f ≤ 10Hz

8

TC

Output Voltage Temp Coefficient (Note 6)

q

15

40

ppm/

°C

q

60

ppm/

°C

Line Regulation

q

30

90

ppm/V

Load Regulation (Note 7)

Sourcing 0mA to 10mA

q

0.1

0.3

mV/mA

Sinking 0mA to 2mA

1.75

4.0

mV/mA

q

6.5

mV/mA

Short-Circuit Output Current

20

40

mA

24

mA

Dropout Voltage (Note 8)

q

100

mV

q

200

mV

Output Hysteresis (Note 9)

∆T = –40°C to 85°C

200

ppm

∆T = 0°C to 70°C

50

ppm

FB Pin Input Current

LTC1258, OUT = FB

10

nA

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 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.