2

LT1185

1185ff

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

2

4

1

3

GND

FB

REF

K PACKAGE

4-LEAD TO-3 METAL CAN

BOTTOM VIEW

ORDER PART

NUMBER

LT1185MK

ORDER PART

NUMBER

LT1185CT

LT1185IT

T PACKAGE

5-LEAD PLASTIC TO-220

REF

FB

GND

FRONT VIEW

5

4

3

2

1

*See Application Section for details on calculating Operation Junction Temperature

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

OBSOLETE PACKAGE

ORDER PART

NUMBER

LT1185CQ

LT1185IQ

Q PACKAGE

5-LEAD PLASTIC DD

FRONT VIEW

TAB

IS

REF

FB

GND

5

4

3

2

1

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Reference Voltage (At FB Pin)

2.37

V

Reference Voltage Tolerance (At FB Pin) (Note 2)

0.3

±1%

1mA

●

1

±2.5

%

P

Feedback Pin Bias Current

●

0.7

2

µA

Droput Voltage (Note 3)

0.20

0.37

V

0.67

1.00

V

The

ELECTRICAL CHARACTERISTICS

Consult LTC Marketing for parts specified with wider operating temperature ranges.

Input Voltage .......................................................... 35V

Input-Output Differential ......................................... 30V

FB Voltage ................................................................ 7V

REF Voltage .............................................................. 7V

Output Voltage ........................................................ 30V

Output Reverse Voltage ............................................ 2V

Operating Ambient Temperature Range

LT1185C ............................................... 0

°C to 70°C

LT1185I ............................................. – 40

°C to 85°C

LT1185M (OBSOLETE) .................... – 55

°C to 125°C

Operating Junction Temperature Range*

Control Section

LT1185C ............................................. 0

°C to 125°C

LT1185I .......................................... – 40

°C to 125°C

LT1185M (OBSOLETE) ................... – 55

°C to 150°C

Power Transistor Section

LT1185C ............................................. 0

°C to 150°C

LT1185I .......................................... – 40

°C to 150°C

LT1185M (OBSOLETE) ................... – 55

°C to 175°C

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................ 300

°C