2
LT1083/LT1084/LT1085
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)
MIN
TYP
MAX
UNITS
1.238
1.250
1.262
V
G
1.225
1.250
0.015
0.035
0.05
0.05
1.270
0.2
0.2
0.5
0.5
V
%
%
%
%
Line Regulation
G
M Grade: 15V
≤
(V
IN
–
V
OUT
)
≤
35V (Notes 2, 3)
C, I Grades: 15V
≤
(V
IN
–
V
OUT
)
≤
30V (Notes 2, 3)
G
G
ABSOLUTE
AXI
U
RATIU
W
Power Dissipation............................... Internally Limited
Input-to-Output Voltage Differential
“C” Grades .......................................................... 30V
“I” Grades............................................................ 30V
“M” Grades.......................................................... 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
W
W
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C.
“M” Grades: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
100% thermal shutdown functional test.
PACKAGE/ORDER I
FOR
ATIO
W
U
U
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1083CP
LT1084CP
LT1084CT
LT1084IT
LT1085CT
LT1085IT
T PACKAGE
3-LEAD PLASTIC TO-220
FRONT VIEW
TAB
IS
OUTPUT
3
2
1
V
IN
V
OUT
ADJ
V
IN
V
OUT
ADJ
P PACKAGE
3-LEAD PLASTIC TO-3P
θ
JA
= 35
°
C/W
FRONT VIEW
TAB IS
OUTPUT
3
2
1
1
2
V
IN
CASE IS
OUTPUT
BOTTOM VIEW
ADJ
K PACKAGE
2-LEAD TO-3 METAL CAN
θ
JA
= 35
°
C/W
θ
JA
= 50
°
C/W
V
IN
V
OUT
ADJ
3
3
2
2
1
1
M PACKAGE
3-LEAD PLASTIC DD
FRONT VIEW
TAB
IS
OUTPUT
*WITH PACKAGE SOLDERED TO 0.5IN
2
COPPER AREA
OVER BACKSIDE GROUND PLANE OR INTERNAL POWER
PLANE.
θ
CAN VARY FROM 20
°
C/W TO > 40
°
C/W
DEPENDING ON MOUNTING TECHNIQUE.
θ
JA
= 30
°
C/W*
LT1083CK
LT1083MK
LT1084CK
LT1084MK
LT1085CK
LT1085MK
LT1085CM
PRECOU
U
U
The
G
denotes the specifications which apply over the full operating
(Note 1)