Datasheet

2
LT1083/LT1084/LT1085
108345fe
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage I
OUT
= 10mA, T
J
= 25°C,
(V
IN
– V
OUT
) = 3V 1.238 1.250 1.262 V
10mA ≤ I
OUT
≤ I
FULL LOAD
1.5V ≤ (V
IN
– V
OUT
) ≤ 25V (Notes 4, 6, 7) ● 1.225 1.250 1.270 V
Line Regulation I
LOAD
= 10mA, 1.5V ≤ (V
IN
– V
OUT
) ≤ 15V, T
J
= 25°C (Notes 2, 3) 0.015 0.2 %
● 0.035 0.2 %
M Grade: 15V ≤ (V
IN
– V
OUT
) ≤ 35V (Notes 2, 3) ● 0.05 0.5 %
C, I Grades: 15V ≤ (V
IN
– V
OUT
) ≤ 30V (Notes 2, 3) ● 0.05 0.5 %
ABSOLUTE MAXIMUM RATINGS
W
WW
U
ELECTRICAL CHARACTERISTICS
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
“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
100% thermal shutdown functional test.
PACKAGE/ORDER INFORMATION
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
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
= 35°C/W
θ
JA
= 50°C/W
V
IN
V
OUT
ADJ
3
2
1
M PACKAGE
3-LEAD PLASTIC DD
FRONT VIEW
TAB
IS
OUTPUT
3
2
1
*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.
θ
JA
= 30°C/W*
LT1083CK
LT1083MK
LT1084CK
LT1084MK
LT1085CK
LT1085MK
LT1085CM
PRECO DITIO I G
UUU
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
(Note 1)
OBSOLETE PACKAGE