Linear Technology LT3081, Datasheet, Page: 3 / 32

LT3081
3
3081fc
For more information www.linear.com/LT3081
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. (Note 2)
elecTrical characTerisTics
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3081EDF#PBF LT3081EDF#TRPBF 3081 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3081IDF#PBF LT3081IDF#TRPBF 3081 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3081EFE#PBF LT3081EFE#TRPBF 3081FE 16-Lead Plastic TSSOP –40°C to 125°C
LT3081IFE#PBF LT3081IFE#TRPBF 3081FE 16-Lead Plastic TSSOP –40°C to 125°C
LT3081HFE#PBF LT3081HFE#TRPBF 3081FE 16-Lead Plastic TSSOP –40°C to 150°C
LT3081MPFE#PBF LT3081MPFE#TRPBF 3081FE 16-Lead Plastic TSSOP –55°C to 150°C
LT3081ER#PBF LT3081ER#TRPBF LT3081R 7-Lead Plastic DD-Pak –40°C to 125°C
LT3081IR#PBF LT3081IR#TRPBF LT3081R 7-Lead Plastic DD-Pak –40°C to 125°C
LT3081ET7#PBF NA LT3081T7 7-Lead Plastic TO-220 –40°C to 125°C
LT3081IT7#PBF NA LT3081T7 7-Lead Plastic TO-220 –40°C to 125°C
LT3081HT7#PBF NA LT3081T7 7-Lead Plastic TO-220 –40°C to 150°C
LT3081MPT7#PBF NA LT3081T7 7-Lead Plastic TO-220 –55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
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/
PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current I
SET
V
IN
= 2V, I
LOAD
= 5mA
2V ≤ V
IN
≤ 36V, 5mA ≤ I
LOAD
≤ 1.5A
l
49.5
48.75
50
50
50.5
51.25
µA
µA
Offset Voltage V
OS
(V
OUT
– V
SET
)
V
IN
= 2V, I
LOAD
= 5mA
V
IN
= 2V, I
LOAD
= 5mA
l
–1.5
–3.5
0
0
1.5
3.5
mV
mV
I
SET
Load Regulation ∆I
LOAD
= 5mA to 1.5A –0.1 nA
V
OS
Load Regulation ∆I
LOAD
= 5mA to 1.5A
(Note 7)
DF, FE Packages
l
–0.5 –3 mV
R, T7 Packages
l
–1.5 –4 mV
Line Regulation ∆I
SET
∆V
OS
∆V
IN
= 2V to 36V, I
LOAD
= 5mA
∆V
IN
= 2V to 36V, I
LOAD
= 5mA
1.5
0.001
nA/V
mV/V
Minimum Load Current (Note 3) 2V ≤ V
IN
≤ 36V
l
1.1 5 mA
Dropout Voltage (Note 4) I
LOAD
= 100mA
I
LOAD
= 1.5A
l
1.21
1.23 1.5
V
V
Internal Current Limit V
IN
= 5V, V
SET
= 0V, V
OUT
= –0.1V
l
1.5 2 A
I
LIM
Programming Ratio
l
300 360 500 mA/kΩ
I
LIM
Minimum Output Current Resistance 450 Ω
I
MON
Full-Scale Output Current I
LOAD
= 1.5A 290 300 330 µA
I
MON
Scale Factor 100mA ≤ I
LOAD
≤ 1.5A 200 µA/A
I
MON
Operating Range
l
V
OUT
– 40V V
OUT
+ 0.4V V