Operating Junction Temperature Range (Notes 2, 10)
E-, I-grades ........................................ –40°C to 125°C
MP-grade ........................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
T, Q, FE Packages Only ..................................... 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
OUT
OUT
OUT
OUT
OUT
SET
1
2
3
4
5
6
13
OUT
12 IN
11 IN
10 IN
9 IN
8 V
CONTROL
7 V
CONTROL
OUT
OUT
OUT
OUT
OUT
OUT
SET
OUT
1
2
3
4
5
6
7
8
17
OUT
16 OUT
15 IN
14 IN
13 IN
12 IN
11 V
CONTROL
10 V
CONTROL
9
OUT
DF PACKAGE
12-LEAD (4mm
×
4mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 37°C/W,
θ
JC
= 8°C/W
EXPOSED PAD (PIN 13) IS OUT, MUST BE SOLDERED TO PCB
FE PACKAGE
16-LEAD PLASTIC TSSOP
T
JMAX
= 125°C,
θ
JA
= 25°C/W,
θ
JC
= 8°C/W
EXPOSED PAD (PIN 17) IS OUT, MUST BE SOLDERED TO PCB
FRONT VIEW
5
TAB IS
OUT
4
3
2
1
Q PACKAGE
5-LEAD PLASTIC DD-PAK
T
JMAX
= 125°C,
θ
JA
= 15°C/W,
θ
JC
= 3°C/W
IN
V
CONTROL
OUT
SET
NC
TAB IS
OUT
FRONT VIEW
5
4
3
2
1
T PACKAGE
5-LEAD PLASTIC TO-220
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 3°C/W
IN
V
CONTROL
OUT
SET
NC
ORDER INFORMATION
LEAD FREE FINISH
LT3083EDF#PBF
LT3083EFE#PBF
LT3083EQ#PBF
LT3083ET#PBF
LT3083IDF#PBF
LT3083IFE#PBF
TAPE AND REEL
LT3083EDF#TRPBF
LT3083EFE#TRPBF
LT3083EQ#TRPBF
LT3083ET#TRPBF
LT3083IDF#TRPBF
LT3083IFE#TRPBF
PART MARKING*
3083
3083FE
LT3083Q
LT3083T
3083
3083FE
PACKAGE DESCRIPTION
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
3083fa
2
LT3083
ORDER INFORMATION
LEAD FREE FINISH
LT3083IQ#PBF
LT3083IT#PBF
LT3083MPDF#PBF
LT3083MPFE#PBF
LT3083MPQ#PBF
LT3083MPT#PBF
LEAD BASED FINISH
LT3083EDF
LT3083EFE
LT3083EQ
LT3083ET
LT3083IDF
LT3083IFE
LT3083IQ
LT3083IT
LT3083MPDF
LT3083MPFE
LT3083MPQ
LT3083MPT
TAPE AND REEL
LT3083IQ#TRPBF
LT3083IT#TRPBF
LT3083MPDF#TRPBF
LT3083MPFE#TRPBF
LT3083MPQ#TRPBF
LT3083MPT#TRPBF
TAPE AND REEL
LT3083EDF#TR
LT3083EFE#TR
LT3083EQ#TR
LT3083ET#TR
LT3083IDF#TR
LT3083IFE#TR
LT3083IQ#TR
LT3083IT#TR
LT3083MPDF#TR
LT3083MPFE#TR
LT3083MPQ#TR
LT3083MPT#TR
PART MARKING*
LT3083Q
LT3083T
3083
3083FE
LT3083Q
LT3083T
PART MARKING*
3083
3083FE
LT3083Q
LT3083T
3083
3083FE
LT3083Q
LT3083T
3083
3083FE
LT3083Q
LT3083T
PACKAGE DESCRIPTION
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
PACKAGE DESCRIPTION
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
12-Lead (4mm
×
4mm) Plastic DFN
16-Lead Plastic TSSOP
5-Lead Plastic DD-PAK
5-Lead Plastic TO-220
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
PARAMETER
SET Pin Current
Output Offset Voltage (V
OUT
– V
SET
)
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
I
SET
V
OS
CONDITIONS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2).
MIN
l
l
TYP
50
50
0
0
0
0
–10
–0.4
–10
–0.7
0.1
0.002
0.1
0.002
MAX
50.5
51
3
4
4
6
–1
–4
0.01
0.01
500
1
UNITS
µA
µA
mV
mV
mV
mV
nA
mV
nA
mV
nA/V
mV/V
nA/V
mV/V
µA
mA
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA, T
J
= 25°C
V
IN
≥ 1V, V
CONTROL
≥ 2V, 5mA ≤ I
LOAD
≤ 3A (Note 9)
DF FE Packages
,
T, Q Packages
49.5
49
–3
–4
–4
–6
l
Load Regulation (DF FE Packages)
,
Load Regulation (T, Q Packages)
Line Regulation (DF FE Packages)
,
Line Regulation (T, Q Packages)
Minimum Load Current (Notes 3, 9)
∆I
SET
∆V
OS
∆I
SET
∆V
OS
∆I
SET
∆V
OS
∆I
SET
∆V
OS
∆I
LOAD
= 1mA to 3A
∆I
LOAD
= 5mA to 3A (Note 8)
∆I
LOAD
= 1mA to 3A
∆I
LOAD
= 5mA to 3A (Note 8)
∆V
IN
= 1V to 14V,
∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
∆V
IN
= 1V to 14V,
∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
∆V
IN
= 1V to 23V,
∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
∆V
IN
= 1V to 23V,
∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
V
IN
= 1V, V
CONTROL
= 2V
V
IN
= 14V (DF/FE) or 23V (T/Q), V
CONTROL
= 25V
l
l
l
l
350
3083fa
3
LT3083
ELECTRICAL CHARACTERISTICS
PARAMETER
V
CONTROL
Dropout Voltage (Note 4)
V
IN
Dropout Voltage (Note 4)
CONDITIONS
I
LOAD
= 100mA
I
LOAD
= 1A
I
LOAD
= 3A
I
LOAD
= 100mA
I
LOAD
= 1A, Q, T Packages
I
LOAD
= 1A, DF FE Packages
,
I
LOAD
= 3A, Q, T Packages
I
LOAD
= 3A, DF FE Packages
,
V
CONTROL
Pin Current (Note 5)
Current Limit
Error Amplifier RMS Output Noise (Note 6)
Reference Current RMS Output Noise (Note 6)
Ripple Rejection
V
RIPPLE
= 0.5V
P-P
, I
L
= 0.1A, C
SET
= 0.1µF
,
C
OUT
= 10µF
Thermal Regulation, I
SET
I
LOAD
= 100mA
I
LOAD
= 1A
I
LOAD
= 3A
V
IN
= 5V, V
CONTROL
= 5V, V
SET
= 0V, V
OUT
= –0.1V
I
LOAD
= 500mA, 10Hz ≤ f ≤ 100kHz, C
OUT
= 10µF C
SET
= 0.1µF
,
10Hz ≤ f ≤ 100kHz
f = 120Hz
f = 10kHz
f = 1MHz
10ms Pulse
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2).
MIN
TYP
1.2
1.22
1.25
10
120
90
310
240
5.5
18
40
3
3.7
40
1
85
75
20
0.003
MAX
1.55
1.6
25
190
160
510
420
10
35
80
UNITS
V
V
V
mV
mV
mV
mV
mV
mA
mA
mA
A
µV
RMS
nA
RMS
dB
dB
dB
%/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
Unless otherwise specified, all voltages are with respect to V
OUT.
The LT3083 is tested and specified under pulse load conditions such that
T
J
≅
T
A
. The LT3083E is 100% tested at T
A
= 25°C. Performance of the
LT3083E over the full –40°C to 125°C operating junction temperature
range is assured by design, characterization, and correlation with
statistical process controls. The LT3083I regulators are guaranteed
over the full –40°C to 125°C operating junction temperature range. The
LT3083MP is 100% tested and guaranteed over the –55°C to 125°C
operating junction temperature range.
Note 3:
Minimum load current is equivalent to the quiescent current of
the part. Since all quiescent and drive current is delivered to the output
of the part, the minimum load current is the minimum current required to
maintain regulation.
Note 4:
For the LT3083, dropout is caused by either minimum control
voltage (V
CONTROL
) or minimum input voltage (V
IN
). Both parameters are
specified with respect to the output voltage. The specifications represent
the minimum input-to-output differential voltage required to maintain
regulation.
Note 5:
The V
CONTROL
pin current is the drive current required for the
output transistor. This current will track output current with roughly a 1:60
ratio. The minimum value is equal to the quiescent current of the device.
Note 6:
Output noise is lowered by adding a small capacitor across the
voltage setting resistor. Adding this capacitor bypasses the voltage setting
resistor shot noise and reference current noise; output noise is then equal
to error amplifier noise (see the Applications Information section).
Note 7:
The SET pin is clamped to the output with diodes through 1k
resistors. These resistors and diodes will only carry current under
transient overloads.
Note 8:
Load regulation is Kelvin sensed at the package.
Note 9:
Current limit includes foldback protection circuitry. Current limit
decreases at higher input-to-output differential voltages.
Note 10:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Overtemperature protection
(thermal limit) is typically active at junction temperatures of 165°C.
Continuous operation above the specified maximum operating junction
便携式数字数据采集系统（PDDAS）使用了LabVIEW实时模块和PXI，以控制风洞测试和采集记录来自128个不同通道的空气压力数据 "通过LabVIEW实时模块，可以在各种操作情况下获得采集空气压力数据及向风洞提供反馈控制信号所需的确定性响应时间。" – Dave Scheibenhoffer, G Systems 挑战: 用一个可采集、分析和存储来自下一代喷气式战斗机引擎设计的动...[详细]
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