Operating Junction Temperature Range (Notes 2, 10)
E-, I-Grades............................................ –40°C to 125°C
Storage Temperature Range:.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS8E, Q, T and ST Packages Only.................... 300°C
pin conFiguraTion
TOP VIEW
OUT 1
OUT 2
OUT 3
SET 4
9
OUT
8
7
6
5
IN
IN
NC
V
CONTROL
TOP VIEW
OUT
OUT
OUT
SET
1
2
3
4
9
OUT
8
7
6
5
IN
IN
NC
V
CONTROL
TAB IS
OUT
FRONT VIEW
5
4
3
2
1
Q PACKAGE
5-LEAD PLASTIC DD-PAK
T
JMAX
= 125°C,
θ
JA
= 30°C/W,
θ
JC
= 3°C/W
IN
V
CONTROL
OUT
SET
NC
MS8E PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 60°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 64°C/W,
θ
JC
= 3°C/W
EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB
FRONT VIEW
5
TAB IS
OUT
4
3
2
1
T PACKAGE
5-LEAD PLASTIC TO-220
FRONT VIEW
IN
V
CONTROL
OUT
SET
NC
TAB IS
OUT
3
2
1
IN*
OUT
SET
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 3°C/W
ST PACKAGE
3-LEAD PLASTIC SOT-223
*IN IS V
CONTROL
AND IN TIED TOGETHER
T
JMAX
= 125°C,
θ
JA
= 55°C/W,
θ
JC
= 15°C/W
3080fc
2
LT3080
orDer inForMaTion
LEAD FREE FINISH
LT3080EDD#PBF
LT3080IDD#PBF
LT3080EMS8E#PBF
LT3080IMS8E#PBF
LT3080EQ#PBF
LT3080IQ#PBF
LT3080ET#PBF
LT3080IT#PBF
LT3080EST#PBF
LT3080IST#PBF
LEAD BASED FINISH
LT3080EDD
LT3080IDD
LT3080EMS8E
LT3080IMS8E
LT3080EQ
LT3080IQ
LT3080ET
LT3080IT
LT3080EST
LT3080IST
TAPE AND REEL
LT3080EDD#TRPBF
LT3080IDD#TRPBF
LT3080EMS8E#TRPBF
LT3080IMS8E#TRPBF
LT3080EQ#TRPBF
LT3080IQ#TRPBF
LT3080ET#TRPBF
LT3080IT#TRPBF
LT3080EST#TRPBF
LT3080IST#TRPBF
TAPE AND REEL
LT3080EDD#TR
LT3080IDD#TR
LT3080EMS8E#TR
LT3080IMS8E#TR
LT3080EQ#TR
LT3080IQ#TR
LT3080ET#TR
LT3080IT#TR
LT3080EST#TR
LT3080IST#TR
PART MARKING*
LCBN
LCBN
LTCBM
LTCBM
LT3080Q
LT3080Q
LT3080ET
LT3080ET
3080
3080
PART MARKING*
LCBN
LCBN
LTCBM
LTCBM
LT3080Q
LT3080Q
LT3080ET
LT3080ET
3080
3080
PACKAGE DESCRIPTION
8-Lead (3mm x 3mm) Plastic DFN
8-Lead (3mm x 3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
5-Lead Plastic DD-Pak
5-Lead Plastic DD-Pak
5-Lead Plastic TO-220
5-Lead Plastic TO-220
3-Lead Plastic SOT-223
3-Lead Plastic SOT-223
PACKAGE DESCRIPTION
8-Lead (3mm x 3mm) Plastic DFN
8-Lead (3mm x 3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
5-Lead Plastic DD-Pak
5-Lead Plastic DD-Pak
5-Lead Plastic TO-220
5-Lead Plastic TO-220
3-Lead Plastic SOT-223
3-Lead Plastic SOT-223
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
–40°C to 125°C
–40°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
–40°C to 125°C
–40°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/
3080fc
3
LT3080
elecTrical characTerisTics
PARAMETER
SET Pin Current
Output Offset Voltage (V
OUT
– V
SET
)
V
IN
= 1V, V
CONTROL
= 2V, I
OUT
= 1mA
I
SET
CONDITIONS
V
IN
= 1V, V
CONTROL
= 2.0V, I
LOAD
= 1mA, T
J
= 25°C
V
IN
≥ 1V, V
CONTROL
≥ 2.0V, 1mA ≤ I
LOAD
≤ 1.1A (Note 9)
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 11)
MIN
9.90
9.80
–2
–3.5
–5
–6
–0.1
0.6
0.1
0.003
0.1
0.003
300
TYP
10
10
MAX
10.10
10.20
2
3.5
5
6
1.3
0.5
0.5
500
1
1
1.6
200
500
6
30
UNITS
µA
µA
mV
mV
mV
mV
nA
mV
nA/V
mV/V
nA/V
mV/V
µA
mA
mA
V
V
mV
mV
mA
mA
A
µV
RMS
nA
RMS
dB
dB
dB
%/W
V
OS
DFN and MSOP Package
SOT-223, DD-Pak and T0-220 Package
l
Load Regulation
Line Regulation (Note 9)
DFN and MSOP Package
Line Regulation (Note 9)
SOT-223, DD-Pak and T0-220 Package
Minimum Load Current (Notes 3, 9)
ΔI
SET
ΔI
LOAD
= 1mA to 1.1A
ΔV
OS
ΔI
LOAD
= 1mA to 1.1A (Note 8)
ΔI
SET
V
IN
= 1V to 25V, V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
ΔV
OS
V
IN
= 1V to 25V, V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
ΔI
SET
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V, I
LOAD
= 1mA
ΔV
OS
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V, I
LOAD
= 1mA
V
IN
= V
CONTROL
= 10V
V
IN
= V
CONTROL
= 25V (DFN and MSOP Package)
V
IN
= V
CONTROL
= 26V (SOT-223, DD-Pak and T0-220 Package)
I
LOAD
= 100mA
I
LOAD
= 1.1A
I
LOAD
= 100mA
I
LOAD
= 1.1A
I
LOAD
= 100mA
I
LOAD
= 1.1A
V
IN
= 5V, V
CONTROL
= 5V, V
SET
= 0V, V
OUT
= –0.1V
I
LOAD
= 1.1A, 10Hz ≤ f ≤ 100kHz, C
OUT
= 10µF, C
SET
= 0.1µF
10Hz ≤ f ≤ 100kHz
f = 120Hz, V
RIPPLE
= 0.5V
P-P
, I
LOAD
= 0.2A, C
SET
= 0.1µF, C
OUT
= 2.2µF
f = 10kHz
f = 1MHz
10ms Pulse
l
l
l
l
l
l
l
l
l
l
l
l
V
CONTROL
Dropout Voltage (Note 4)
V
IN
Dropout Voltage (Note 4)
V
CONTROL
Pin Current
Current Limit
Error Amplifier RMS Output Noise (Note 6)
Reference Current RMS Output Noise (Note 6)
Ripple Rejection
1.2
1.35
100
350
4
17
1.1
1.4
40
1
75
55
20
0.003
Thermal Regulation, I
SET
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 LT3080 is tested and specified under pulse load conditions such that
T
J
≅
T
A
. The LT3080E is tested at T
A
= 25°C. Performance of the LT3080E
over the full –40°C and 125°C operating temperature range is assured by
design, characterization, and correlation with statistical process controls.
The LT3080I is guaranteed over the full –40°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 LT3080, 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 Applications Information section).
Note 7:
SET pin is clamped to the output with diodes. These diodes only
carry current under transient overloads.
Note 8:
Load regulation is Kelvin sensed at the package.
Note 9:
Current limit may decrease to zero at input-to-output differential
voltages (V
IN
–V
OUT
) greater than 25V (DFN and MSOP package) or 26V
(SOT-223, DD-Pak and T0-220 Package). Operation at voltages for both IN
and V
CONTROL
is allowed up to a maximum of 36V as long as the difference
between input and output voltage is below the specified differential
(V
IN
–V
OUT
) voltage. Line and load regulation specifications are not
applicable when the device is in current limit.
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. Continuous operation above the specified
maximum operating junction temperature may impair device reliability.
Note 11:
The SOT-223 package connects the IN and V
CONTROL
pins
together internally. Therefore, test conditions for this pin follow the
V
CONTROL
conditions listed in the Electrical Characteristics Table.
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