3

LT1236

ELECTRICAL C

C

LT1236-10

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Output Voltage (Note 1)

LT1236A-10

9.995

10.000

10.005

V

LT1236B-10/LT1236C-10

9.990

10.000

10.010

V

Output Voltage Temperature Coefficient (Note 2)

LT1236A-10

2

5

ppm/

°C

LT1236B-10

5

10

ppm/

°C

LT1236C-10

10

15

ppm/

°C

Line Regulation (Note 3)

11.5V

1.0

4

ppm/V

q

6

ppm/V

14.5V

0.5

2

ppm/V

q

4

ppm/V

Load Regulation (Sourcing Current)

0

12

25

ppm/mA

(Note 3)

q

40

ppm/mA

Load Regulation (Shunt Mode)

1.7mA

50

100

ppm/mA

(Notes 3, 4)

q

150

ppm/mA

Series Mode Supply Current

1.2

1.7

mA

q

2.0

mA

Shunt Mode Minimum Current

1.1

1.5

mA

q

1.7

mA

Output Voltage Noise (Note 5)

0.1Hz

≤ f ≤ 10Hz

6.0

10Hz

≤ f ≤ 1kHz

3.5

6

Long-Term Stablility of Output Voltage (Note 6)

∆t = 1000Hrs Non-Cumulative

30

ppm

Temperature Hysteresis of Output (Note 7)

∆T = ±25°C

5

ppm

Note 5: RMS noise is measured with a 2-pole highpass filter at 10Hz and a

2-pole lowpass filter at 1kHz. The resulting output is full-wave rectified and

then integrated for a fixed period, making the final reading an average as

opposed to RMS. Correction factors are used to convert from average to

RMS, and 0.88 is used to correct for the non-ideal bandbass of the filters.

Peak-to-peak noise is measured with a single highpass filter at 0.1Hz and a

2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air environment

to eliminate thermocouple effects on the leads. Test time is 10 seconds.

Note 6: Long-term stability typically has a logarithmic characteristic and

therefore, changes after 1000 hours tend to be much smaller than before

that time. Total drift in the second thousand hours is normally less than

one third that of the first thousand hours, with a continuing trend toward

reduced drift with time. Significant improvement in long-term drift can be

range.

Note 1: Output voltage is measured immediately after turn-on. Changes

due to chip warm-up are typically less than 0.005%.

Note 2: Temperature coefficient is measured by dividing the change in

output voltage over the temperature range by the change in temperature.

Incremental slope is also measured at 25

°C.

Note 3: Line and load regulation are measured on a pulse basis. Output

changes due to die temperature change must be taken into account

separately.

Note 4: Shunt mode regulation is measured with the input open. With the

input connected, shunt mode current can be reduced to 0mA. Load

regulation will remain the same.

LT1236-5

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Load Regulation (Sinking Current)

0

60

100

ppm/mA

(Note 3)

q

150

ppm/mA

Supply Current

0.8

1.2

mA

q

1.5

mA

Output Voltage Noise

0.1Hz

≤ f ≤ 10Hz

3.0

(Note 5)

10Hz

≤ f ≤ 1kHz

2.2

3.5

Long-Term Stability of Output Voltage (Note 6)

∆t = 1000Hrs Non-Cumulative

20

ppm

Temperature Hysteresis of Output (Note 7)

∆T = ±25°C

10

ppm