Datasheet

2
LT1086 Series
Power Dissipation............................... Internally Limited
Input Voltage (Note 1) ............................................. 30V
Operating Input Voltage
Adjustable Devices ........................................... 25V
2.85V Devices .................................................. 18V
3.3V, 3.6V, and 5V Devices ............................... 20V
12V Devices ...................................................... 25V
Operating Junction Temperature Range
“C” Grades
Control Section ............................... 0°C to 125°C
Power Transistor............................. 0°C to 150°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
ABSOLUTE MAXIMUM RATINGS
W
WW
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Note 1: Although the device’s maximum operating voltage is limited, (18V
for a 2.85V device, 20V for a 5V device, and 25V for adjustable and
12V devices) the devices are guaranteed to withstand transient input
voltages up to 30V. For input voltages greater than the maximum
operating input voltage some degradation of specifications will occur. For
5V and 12V devices operating at input/output voltage differentials greater
than 15V, a minimum external load of 5mA is required to maintain
regulation.
100% Thermal Shutdown Functional Test.
PRECONDITIONING
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PACKAGE/ORDER INFORMATION
W
U
U
ORDER
PART NUMBER
ORDER
PART NUMBER
LT1086MH
LT1086CM
LT1086CM-3.3
LT1086CM-3.6
*For fixed versions.
Consult factory for Industrial grade parts.
ORDER
PART NUMBER
ORDER
PART NUMBER
LT1086CK
LT1086CK-5
LT1086CK-12
LT1086MK
LT1086MK-5
LT1086MK-12
LT1086CT
LT1086CT-2.85
LT1086CT-3.3
LT1086CT-3.6
LT1086CT-5
LT1086CT-12
θ
JA
= 150°C/W
BOTTOM VIEW
V
IN
V
OUT

(CASE)
ADJ
32
1
H PACKAGE
3-LEAD TO-39 METAL CAN

2
1
V
IN
CASE 
IS OUTPUT
ADJ (GND)*
K PACKAGE
2-LEAD TO-3 METAL CAN
BOTTOM VIEW
θ
JA
= 35°C/W
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.
V
IN


V
OUT


ADJ
(GND)*
M PACKAGE
3-LEAD PLASTIC DD
FRONT VIEW
TAB IS
OUTPUT
3

2

1
T PACKAGE
3-LEAD PLASTIC TO-220
FRONT VIEW
TAB IS
OUTPUT
3
2
1
V
IN

V
OUT

ADJ
(GND)*
θ
JA
= 50°C/W