LT1085CT-3.3 Linear Technology, LT1085CT-3.3 Datasheet - Page 2

• Manufacturer Part Number: LT1085CT-3.3
• Description: IC LDO REG 3A 3.3V TO-220-3
• Manufacturer: Linear Technology

Specifications of LT1085CT-3.3

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 25V
• Voltage - Dropout (typical): 1.3V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: 0°C ~ 150°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
Consult factory for parts specified with wider operating temperature ranges.
LT1083/LT1084/LT1085 Fixed
Power Dissipation .............................. Internally Limited
Input Voltage* ........................................................ 30V
Operating Input Voltage
Operating Junction Temperature Range
2
TAB IS
OUTPUT
3.3V, 3.6V Devices ........................................... 20V
5V Devices ....................................................... 20V
12V Devices ..................................................... 25V
“C” Grades
“M” Grades
GND
V
IN
Control Section .............................. 0°C to 125°C
Power Transistor ............................ 0°C to 150°C
Control Section .......................... –55°C to 150°C
Power Transistor ........................ –55°C to 200°C
OBSOLETE NOT RECOMMENDED
2-LEAD TO-3 METAL CAN
3-LEAD PLASTIC TO-220
θ
θ
FRONT VIEW
JA
JA
K PACKAGE
T PACKAGE
= 35°C/W
= 50°C/W
2
1
3
2
1
FOR NEW DESIGNS
W
CASE IS
OUTPUT
W W
V
V
GND
IN
OUT
U
LT1083CK-5
LT1083CK-12
LT1083MK-5
LT1083MK-12
LT1084CK-5
LT1084CK-12
ORDER PART NUMBER
W
LT1084CT-3.3
LT1084CT-5
LT1084CT-12
LT1085CT-3.3
LT1085CT-3.6
LT1085CT-5
LT1085CT-12
U
LT1084MK-5
LT1084MK-12
LT1085CK-5
LT1085CK-12
LT1085MK-5
LT1085MK-12
U
(Note 1)
PRECO DITIO I G
100% Thermal Limit Functional Test.
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.
*WITH PACKAGE SOLDERED TO 0.52IN
COPPER AREA OVER BACKSIDE GROUND
PLANE OR INTERNAL POWER PLANE. θ
VARY FROM 20°C/W TO > 40°C/W DEPENDING
ON MOUNTING TECHNIQUE.
TAB IS
OUTPUT
OUTPUT
TAB IS
3-LEAD TO-3P PLASTIC
U
3-LEAD PLASTIC DD
FRONT VIEW
θ
P PACKAGE
JA
θ
FRONT VIEW
M PACKAGE
JA
= 45°C/W
3
2
1
= 30°C/W*
3
2
1
U U
2
JA
V
V
GND
V
V
GND
IN
OUT
IN
OUT
CAN
ORDER PART NUMBER
LT1085CM-3.3
LT1085CM-3.6
LT1085IM-3.6
LT1083CP-5
LT1083CP-12
LT1084CP-5
LT1084CP-12
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