Datasheet

2
LT1086 Series
PRECONDITIONING
UUU
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
“I” Grades
Control Section .......................... –40°C to 125°C
Power Transistor........................ –40°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
U
100% Thermal Shutdown Functional Test.
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 fixed
voltage devices operating at input/output voltage differentials greater than
15V, a minimum external load of 5mA is required to maintain regulation.
PACKAGE/ORDER INFORMATION
W
U
U
LT1086CM
LT1086CM-3.3
LT1086CM-3.6
LT1086IM
LT1086IM-3.3
LT1086IM-3.6
ORDER
PART NUMBER
ORDER
PART NUMBER
LT1086CH
LT1086MH
ORDER
PART NUMBER
ORDER
PART NUMBER
LT1086CK
LT1086CK-5
LT1086CK-12
LT1086IK
LT1086IK-5
LT1086IK-12
LT1086MK
LT1086MK-5
LT1086MK-12
θ
JA
= 150°C/W
2
1
V
IN
CASE 
IS OUTPUT
ADJ (GND)*
K PACKAGE
2-LEAD TO-3 METAL CAN
BOTTOM VIEW
θ
JA
= 35°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
LT1086CT
LT1086CT-2.85
LT1086CT-3.3
LT1086IT
LT1086IT-5
LT1086IT-12
LT1086CT-3.6
LT1086CT-5
LT1086CT-12
θ
JA
= 30°C/W**
*For fixed versions.
BOTTOM VIEW
V
IN
V
OUT

(CASE)
ADJ
13
2
H PACKAGE
3-LEAD TO-39 METAL CAN
