LT1185 查看數據表（PDF） - Linear Technology
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LT1185 Datasheet PDF : 16 Pages
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LT1185
ABSOLUTE AXI U RATI GS (Note 1)
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
*See Application Section for details on calculating Operation Junction Temperature
UW U
PACKAGE/ORDER I FOR ATIO
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
BOTTOM VIEW
GND
FB
1
2
4
3
VIN (CASE)
VOUT
REF
K PACKAGE
4-LEAD TO-3 METAL CAN
θJC MAX = 2.5°C/ W, θJA = 35°C/W
OBSOLETE PACKAGE
FRONT VIEW
5
REF
TAB
4
VOUT
IS
3
VIN
VIN
2
FB
1
GND
Q PACKAGE
5-LEAD PLASTIC DD
TJMAX = 150°C, θJA = 30°C/W
ORDER PART
NUMBER
LT1185MK
ORDER PART
NUMBER
LT1185CQ
LT1185IQ
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
FRONT VIEW
5
4
3
2
1
TAB IS VIN
T PACKAGE
5-LEAD PLASTIC TO-220
θJC MAX = 2.5°C/ W, θJA = 50°C/W
REF
VOUT
VIN
FB
GND
ORDER PART
NUMBER
LT1185CT
LT1185IT
ELECTRICAL CHARACTERISTICS
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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
Reference Voltage (At FB Pin)
2.37
Reference Voltage Tolerance (At FB Pin) (Note 2) VIN – VOUT = 5V, VOUT = VREF
1mA ≤ IOUT ≤ 3A
●
VIN – VOUT = 1.2V to VIN = 30V
P ≤ 25W (Note 6), VOUT = 5V
TMIN ≤ TJ ≤ TMAX (Note 9)
Feedback Pin Bias Current
VOUT = VREF
●
Droput Voltage (Note 3)
IOUT = 0.5A, VOUT = 5V
IOUT = 3A, VOUT = 5V
0.3
±1
1
±2.5
0.7
2
0.20
0.37
0.67
1.00
2
UNITS
V
%
%
µA
V
V
1185ff
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