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
orDer inFormaTion
LEAD FREE FINISH
LT3080EDD-1#PBF
LT3080IDD-1#PBF
LT3080EMS8E-1#PBF
LT3080IMS8E-1#PBF
LEAD BASED FINISH
LT3080EDD-1
LT3080IDD-1
LT3080EMS8E-1
LT3080IMS8E-1
TAPE AND REEL
LT3080EDD-1#TRPBF
LT3080IDD-1#TRPBF
LT3080EMS8E-1#TRPBF
LT3080IMS8E-1#TRPBF
TAPE AND REEL
LT3080EDD-1#TR
LT3080IDD-1#TR
LT3080EMS8E-1#TR
LT3080IMS8E-1#TR
PART MARKING*
LDPM
LDPM
LTDPN
LTDPN
PART MARKING*
LDPM
LDPM
LTDPN
LTDPN
PACKAGE DESCRIPTION
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
PACKAGE DESCRIPTION
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
TEMPERATURE RANGE
–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
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/
2
30801fc
For more information
www.linear.com/LT3080-1
LT3080-1
elecTrical characTerisTics
PARAMETER
SET Pin Current
Output Offset Voltage (V
OUT
– V
SET
)
Load Regulation
I
SET
V
OS
∆I
SET
∆V
OS
∆V
OS
∆I
SET
∆V
OS
CONDITIONS
V
IN
= 1V,
V
IN
≥ 1V,
V
CONTROL
= 2.0V, I
LOAD
= 1mA, T
J
= 25°C
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.
MIN
9.90
9.80
–2
–3.5
–0.1
27.5
l
TYP
10
10
MAX
10.10
10.20
2
3.5
34
48
0.5
500
1
1.6
200
500
6
30
UNITS
µA
µA
mV
mV
nA
mV
mV
nA/V
mV/V
µA
mA
V
V
mV
mV
mA
mA
A
µV
RMS
nA
RMS
dB
dB
dB
%/W
V
IN
= 1V, V
CONTROL
= 2V, I
OUT
= 1mA
∆I
LOAD
= 1mA to 1.1A
∆I
LOAD
= 1mA to 1.1A (Note 8)
∆I
LOAD
= 1mA to 1.1A (Note 8)
V
IN
= 1V to 22V,
V
IN
= 1V to 22V,
V
CONTROL
=1V to 22V,
V
CONTROL
=1V to 22V,
I
LOAD
=1mA
I
LOAD
=1mA
Line Regulation (Note 9)
Minimum Load Current (Notes 3, 9)
V
CONTROL
Dropout Voltage (Note 4)
V
IN
Dropout Voltage (Note 4)
CONTROL Pin Current (Note 5)
Current Limit (Note 9)
l
l
l
l
l
l
l
l
l
0.1
0.003
300
1.2
1.35
100
350
4
17
1.1
1.4
40
1
75
55
20
0.003
V
IN
= V
CONTROL
= 10V
V
IN
= V
CONTROL
= 22V
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
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
Error Amplifier RMS Output Noise (Note 6)
Ripple Rejection
Reference Current RMS Output Noise (Note 6) 10Hz ≤ f ≤ 100kHz
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 LT3080-1 is tested and specified under pulse load conditions such
that T
J
≅
T
A
. The LT3080E-1 is tested at T
A
= 25°C. Performance of the
LT3080E-1 over the full –40°C and 125°C operating temperature range
is assured by design, characterization, and correlation with statistical
process controls. The LT3080I-1 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 LT3080-1, 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 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:
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 22V. 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 over-temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when over-temperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
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