LT1083/LT1084/LT1085
ABSOLUTE
MAXIMUM
RATINGS
PRECO DITIO I G
100% thermal shutdown functional test.
PACKAGE/ORDER INFORMATION
FRONT VIEW
TAB
IS
OUTPUT
3
2
1
T PACKAGE
3-LEAD PLASTIC TO-220
θ
JA
= 50°C/W
V
IN
V
OUT
ADJ
ORDER PART
NUMBER
LT1084CT
LT1084IT
LT1085CT
LT1085IT
TAB IS
OUTPUT
FRONT VIEW
3
2
1
P PACKAGE
3-LEAD PLASTIC TO-3P
θ
JA
= 35°C/W
BOTTOM VIEW
V
IN
2
CASE IS
OUTPUT
1
ADJ
K PACKAGE
2-LEAD TO-3 METAL CAN
θ
JA
= 35°C/W
LT1083CK
LT1083MK
LT1084CK
LT1084MK
LT1085CK
LT1085MK
FRONT VIEW
3
TAB
IS
OUTPUT
2
1
M PACKAGE
3-LEAD PLASTIC DD
θ
JA
= 30°C/W*
*WITH PACKAGE SOLDERED TO 0.5IN
2
COPPER AREA
OVER BACKSIDE GROUND PLANE OR INTERNAL POWER
PLANE.
θ
JA
CAN VARY FROM 20°C/W TO > 40°C/W
DEPENDING ON MOUNTING TECHNIQUE.
OBSOLETE PACKAGE
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
Reference Voltage
CONDITIONS
I
OUT
= 10mA, T
J
= 25°C,
(V
IN
– V
OUT
) = 3V
10mA
≤
I
OUT
≤
I
FULL LOAD
1.5V
≤
(V
IN
– V
OUT
)
≤
25V (Notes 4, 6, 7)
I
LOAD
= 10mA, 1.5V
≤
(V
IN
– V
OUT
)
≤
15V, T
J
= 25°C (Notes 2, 3)
M Grade: 15V
≤
(V
IN
– V
OUT
)
≤
35V (Notes 2, 3)
C, I Grades: 15V
≤
(V
IN
– V
OUT
)
≤
30V (Notes 2, 3)
MIN
1.238
●
●
●
●
ELECTRICAL CHARACTERISTICS
Line Regulation
2
UU
U
Power Dissipation ............................... Internally Limited
Input-to-Output Voltage Differential
“C” Grades .......................................................... 30V
“I” Grades ............................................................ 30V
“M” Grades
(OBSOLETE)............................
35V
Operating Junction Temperature Range
“C” Grades: Control Section .................. 0°C to 125°C
Power Transistor ............... 0°C to 150°C
“I” Grades: Control Section ............. – 40°C to 125°C
Power Transistor .......... – 40°C to 150°C
U
U
W
W W
U
W
(Note 1)
“M” Grades:
(OBSOLETE)
Control Section ............. – 55°C to 150°C
Power Transistor .......... – 55°C to 200°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
V
IN
V
OUT
ADJ
LT1083CP
LT1084CP
V
IN
V
OUT
ADJ
LT1085CM
TYP
1.250
1.250
0.015
0.035
0.05
0.05
MAX
1.262
1.270
0.2
0.2
0.5
0.5
UNITS
V
V
%
%
%
%
108345fe
1.225
LINER [ LINEAR TECHNOLOGY ]
