LT1019 Datasheet, PDF (4/12 Pages) Linear Technology – Precision Reference

LT1019
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
V_IN = 15V, I_OUT = 0 unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
LTC1019A
MIN TYP MAX
∆V_OUT
∆I_OUT
Load Regulation Series
Mode (Notes 4, 5)
Load Regulation,
Shunt Mode
0 ≤ I_OUT ≤ 10mA (Note 5)
q
1mA ≤ I_SHUNT ≤ 10mA (Notes 5, 6)
2.5V, 4.5V, 5V
q
10V
q
0.02 0.05
0.08
0.1 0.4
0.8
Thermal Regulation (Note 7) ∆P = 200mW, t = 50ms
0.1 0.5
I_Q
Quiescent Current
Series Mode
0.65 1.0
q
1.3
Minimum Shunt Current
(Note 8)
q
0.5 0.8
Minimum Input/Output
Voltage Differential
Trim Range
I_OUT ≤ 1mA
I_OUT = 10mA
LT1019-2.5
LT1019-5
LT1019-10
q
0.9 1.1
q
1.3
±3.5 ±6
±3.5 5, – 13
±3.5 5, – 27
I_SC
Short-Circuit Current
2V ≤ V_IN ≤ 35V
Output Connected to GND
15 25 50
q 10
e_n
Output Voltage Noise
(Note 10)
10Hz ≤ f ≤ 1kHz
0.1Hz ≤ f ≤ 10Hz
2.5 4
2.5
LTC1019
MIN TYP MAX
0.02 0.05
0.08
UNITS
mV/mA (Ω)
mV/mA (Ω)
0.1 0.4
0.8
0.1 0.5
0.65 1.2
1.5
0.5 0.8
0.9 1.1
1.3
±3.5 ±6
±3.5 5, – 13
±3.5 5, – 27
15 25 50
10
2.5 4
2.5
mV/mA (Ω)
mV/mA (Ω)
ppm/mW
mA
mA
mA
V
V
%
%
%
mA
mA
ppm (RMS)
ppm (P-P)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: These are high power conditions and are therefore guaranteed
only at temperatures equal to or below 70°C. Input is either floating, tied to
output or held higher than output.
Note 3: Output voltage drift is measured using the box method. Output
voltage is recorded at T_MIN, 25°C and T_MAX. The lowest of these three
readings is subtracted from the highest and the resultant difference is
divided by (T_MAX – T_MIN).
Note 4: Line regulation and load regulation are measured on a pulse basis
with low duty cycle. Effects due to die heating must be taken into account
separately. See thermal regulation and application section.
Note 5: Load regulation is measured at a point 1/8" below the base of the
package with Kelvin contacts.
Note 6: Shunt regulation is measured with the input floating. This
parameter is also guaranteed with the input connected (V_IN – V_OUT) > 1V,
0mA ≤ I_SINK ≤ 10mA. Shunt and sink current flow into the output.
Note 7: Thermal regulation is caused by die temperature gradients created
by load current or input voltage changes. This effect must be added to
normal line or load regulation.
Note 8: Minimum shunt current is measured with shunt voltage held
20mV below the value measured at 1mA shunt current.
Note 9: Minimum input/output voltage is measured by holding input
voltage 0.5V above the nominal output voltage, while measuring
V_IN – V_OUT.
Note 10: RMS noise is measured with a single 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. A correction factor of 1.1 is used to convert
from average to RMS, and a second correction of 0.88 is used to correct
the nonideal bandpass of the filters.
Note 11: If the part is stored outside of the specified temperature range,
the output may shift due to hysteresis.
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