LT1085CT-33 Datasheet, PDF (2/12 Pages) Linear Technology – 3A, 5A, 7.5A Low Dropout Positive Fixed Regulators

LT1083/LT1084/LT1085 Fixed
ABSOLUTE AXI U RATI GS (Note 1)
Power Dissipation .............................. Internally Limited
Input Voltage* ........................................................ 30V
Operating Input Voltage
3.3V, 3.6V Devices ........................................... 20V
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
*Although the devices maximum operating voltage is limited, (20V for a
3V, 5V device, and 25V for a 12V device) 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 input/output voltage differentials greater than
15V, a minimum external load of 5mA is required to maintain regulation.
PRECO DITIO I G
100% Thermal Limit Functional Test.
UW U
PACKAGE/ORDER I FOR ATIO
V_IN
CASE IS
OUTPUT
2
1
GND
K PACKAGE
2-LEAD TO-3 METAL CAN
θ_JA = 35°C/W
ORDER PART NUMBER
LT1083CK-5 LT1084MK-5
LT1083CK-12 LT1084MK-12
LT1083MK-5 LT1085CK-5
LT1083MK-12 LT1085CK-12
LT1084CK-5 LT1085MK-5
LT1084CK-12 LT1085MK-12
OBSOLETE NOT RECOMMENDED
FOR NEW DESIGNS
TAB IS
OUTPUT
FRONT VIEW
3
2
1
P PACKAGE
3-LEAD TO-3P PLASTIC
θ_JA = 45°C/W
ORDER PART NUMBER
LT1083CP-5
LT1083CP-12
LT1084CP-5
V_IN
LT1084CP-12
V_OUT
GND
TAB IS
OUTPUT
FRONT VIEW
3
2
1
T PACKAGE
3-LEAD PLASTIC TO-220
θ_JA = 50°C/W
V_IN
V_OUT
GND
LT1084CT-3.3
LT1084CT-5
LT1084CT-12
LT1085CT-3.3
LT1085CT-3.6
LT1085CT-5
LT1085CT-12
Consult factory for parts specified with wider operating temperature ranges.
FRONT VIEW
TAB IS
OUTPUT
3
V_IN
2
V_OUT
1
GND
M PACKAGE
3-LEAD PLASTIC DD
θ_JA = 30°C/W*
*WITH PACKAGE SOLDERED TO 0.52IN²
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.
LT1085CM-3.3
LT1085CM-3.6
LT1085IM-3.6
1083ffd
2