LT1021
The
q
denotes specifications that apply over the full operating temperature
range, otherwise specifications are T
A
= 25°C. V
IN
= 15V, I
OUT
= 0, unless otherwise noted.
PARAMETER
Output Voltage (Note 2)
Output Voltage Temperature Coefficient (Note 3)
CONDITIONS
LT1021C-10
LT1021B-10/LT1021D-10
T
MIN
≤
T
J
≤
T
MAX
LT1021B-10
LT1021C-10/LT1021D-10
11.5V
≤
V
IN
≤
14.5V
q
q
q
ELECTRICAL CHARACTERISTICS
MIN
9.995
9.950
LT1021-10
TYP
10.00
10.00
2
5
1.0
0.5
MAX
10.005
10.050
5
20
4
6
2
4
25
40
100
150
1.7
2.0
1.5
1.7
6
UNITS
V
V
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/V
ppm/V
ppm/mA
ppm/mA
ppm/mA
ppm/mA
mA
mA
mA
mA
µV
P-P
µV
RMS
ppm
ppm
Line Regulation (Note 4)
14.5V
≤
V
IN
≤
40V
q
Load Regulation (Sourcing Current)
Load Regulation (Shunt Mode)
Supply Current (Series Mode)
0
≤
I
OUT
≤
10mA
(Note 4)
1.7mA
≤
I
SHUNT
≤
10mA
(Notes 4, 5)
12
q
50
q
1.2
q
Minimum Current (Shunt Mode)
Output Voltage Noise (Note 6)
Long Term Stability of Output Voltage (Note 7)
Temperature Hysteresis of Output
V
IN
is Open
q
1.1
6.0
3.5
15
5
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
∆t
= 1000Hrs Noncumulative
∆T
=
±25°C
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Output voltage is measured immediately after turn-on. Changes
due to chip warm-up are typically less than 0.005%.
Note 3:
Temperature coefficient is measured by dividing the change in
output voltage over the temperature range by the change in temperature.
Separate tests are done for hot and cold; T
MIN
to 25°C and 25°C to T
MAX
.
Incremental slope is also measured at 25°C.
Note 4:
Line and load regulation are measured on a pulse basis. Output
changes due to die temperature change must be taken into account
separately. Package thermal resistance is 150°C/W for TO-5 (H), 130°C/W
for N and 150°C/W for the SO-8.
Note 5:
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.
Note 6:
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 correct for the non-ideal bandpass 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 7:
Consult factory for units with long term stability data.
4
LINER [ LINEAR TECHNOLOGY ]
