LT1185_15 datasheet(2/16 Pages) LINER

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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/

GND

REF

VIN (CASE)

VOUT

K PACKAGE

4-LEAD TO-3 METAL CAN

BOTTOM VIEW

ORDER PART

NUMBER

LT1185MK

ORDER PART

NUMBER

LT1185CT

LT1185IT

θJC MAX = 2.5°C/W, θJA = 50°C/W

T PACKAGE

5-LEAD PLASTIC TO-220

REF

VOUT

VIN

GND

FRONT VIEW

TAB IS VIN

θJC MAX = 2.5°C/W, θJA = 35°C/W

*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

TJMAX = 150°C, θJA = 30°C/W

Q PACKAGE

5-LEAD PLASTIC DD

FRONT VIEW

TAB

VIN

REF

VOUT

VIN

GND

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Reference Voltage (At FB Pin)

2.37

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

VIN – VOUT = 5V, VOUT = VREF

0.3

±1%

1mA

≤ IOUT ≤ 3A

●

±2.5

VIN – VOUT = 1.2V to VIN = 30V

≤ 25W (Note 6), VOUT = 5V

TMIN ≤ TJ ≤ TMAX (Note 9)

Feedback Pin Bias Current

VOUT = VREF

●

0.7

µA

Droput Voltage (Note 3)

IOUT = 0.5A, VOUT = 5V

0.20

0.37

IOUT = 3A, VOUT = 5V

0.67

1.00

The

● denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25°C.

Adjustable version, VIN = 7.4V, VOUT = 5V, IOUT = 1mA, RLIM = 4.02k, unless otherwise noted.

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

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