LT1185(Rev_D) Просмотр технического описания (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
LT1185M ......................................... – 55°C to 125°C
Operating Junction Temperature Range*
Control Section
LT1185C ............................................. 0°C to 125°C
LT1185I .......................................... – 40°C to 125°C
LT1185M ........................................ – 55°C to 150°C
Power Transistor Section
LT1185C ............................................. 0°C to 150°C
LT1185I .......................................... – 40°C to 150°C
LT1185M ........................................ – 55°C to 175°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
*See Application Section for details on calculating Operation Junction Temperature
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW
GND
FB
ORDER PART
NUMBER
1
2
4
3
LT1185MK
VIN (CASE)
VOUT
REF
K PACKAGE
4-LEAD TO-3 METAL CAN
θJC MAX = 2.5°C/ W, θJA = 35°C/W
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
ORDER PART
NUMBER
REF
VOUT LT1185CT
VIN
FB
LT1185IT
GND
ELECTRICAL CHARACTERISTICS
The q 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)
Feedback Pin Bias Current
Droput Voltage (Note 3)
Load Regulation (Note 7)
Line Regulation (Note 7)
Minimum Input Voltage
Internal Current Limit (See Graph for
Guaranteed Curve) (Note 12)
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)
VOUT = VREF
IOUT = 0.5A, VOUT = 5V
IOUT = 3A, VOUT = 5V
IOUT = 5mA to 3A
VIN – VOUT = 1.5V to 10V, VOUT = 5V
VIN – VOUT = 1V to 20V, VOUT = 5V
IOUT = 1A (Note 4), VOUT = VREF
IOUT = 3A
1.5V ≤ VIN – VOUT ≤ 10V
VIN – VOUT = 15V
VIN – VOUT = 20V
VIN – VOUT = 30V
0.3
±1
q
1
±2.5
q
3.3
q
3.1
q
2.0
q
1.0
q
0.2
0.7
2
0.20
0.37
0.67
1.00
0.05
0.3
0.002
0.01
4.0
4.3
3.6
4.2
4.4
3.0
4.2
1.7
2.6
0.4
1.0
UNITS
V
%
%
µA
V
V
%
%/V
V
V
A
A
A
A
A
2
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