LT1185 LINER [Linear Technology], LT1185 Datasheet - Page 2

• Manufacturer Part Number: LT1185
• Description: Low Dropout Regulator
• Manufacturer: LINER [Linear Technology]

A
LT1185
(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
Operating Junction Temperature Range*
Control Section
Power Transistor Section
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
ELECTRICAL CHARACTERISTICS
PARAMETER
Reference Voltage (At FB Pin)
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)
The
Adjustable version, V
2
BSOLUTE
LT1185C ............................................... 0 C to 70 C
LT1185M ......................................... – 55 C to 125 C
LT1185C ............................................. 0 C to 125 C
LT1185I .......................................... – 40 C to 125 C
LT1185M ........................................ – 55 C to 150 C
LT1185C ............................................. 0 C to 150 C
LT1185I .......................................... – 40 C to 150 C
LT1185M ........................................ – 55 C to 175 C
denotes specifications which apply over the operating temperature range, otherwise specifications are at T
W
IN
= 7.4V, V
A
XI
W
OUT
U
= 5V, I
W
R
OUT
CONDITIONS
V
1mA I
V
P 25W (Note 6), V
T
V
I
I
I
V
V
I
I
1.5V V
V
V
V
OUT
OUT
OUT
OUT
OUT
A
IN
IN
MIN
OUT
IN
IN
IN
IN
IN
= 1mA, R
– V
– V
– V
– V
– V
– V
– V
TI
= 0.5A, V
= 3A, V
= 5mA to 3A
= 1A (Note 4), V
= 3A
= V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
T
U
OUT
J
IN
REF
G
– V
= 5V, V
= 1.2V to V
= 1.5V to 10V, V
= 1V to 20V, V
= 15V
= 20V
= 30V
T
OUT
MAX
LIM
OUT
3A
OUT
S
= 5V
= 4.02k, unless otherwise noted.
(Note 9)
= 5V
OUT
OUT
10V
OUT
IN
= V
= 5V
= 30V
= V
OUT
REF
OUT
REF
PACKAGE/ORDER I FOR ATIO
= 5V
= 5V
V
TAB IS V
GND
OUT
4-LEAD TO-3 METAL CAN
IN
JC MAX
JC MAX
BOTTOM VIEW
5-LEAD PLASTIC TO-220
K PACKAGE
1
4
= 2.5 C/ W,
= 2.5 C/ W,
FRONT VIEW
T PACKAGE
2
3
5
4
3
2
1
MIN
3.3
3.1
2.0
1.0
0.2
JA
JA
= 35 C/W
= 50 C/W
FB
REF
0.002
U
TYP
2.37
0.20
0.67
0.05
V
0.3
0.7
4.0
4.3
3.6
3.0
1.7
0.4
IN
1
(CASE)
REF
V
V
FB
GND
OUT
IN
A
= 25 C.
W
ORDER PART
ORDER PART
MAX
0.37
1.00
0.01
LT1185MK
0.3
4.2
4.4
4.2
2.6
1.0
LT1185CT
LT1185IT
NUMBER
NUMBER
2.5
2
1
UNITS
U
%/V
%
%
%
V
A
V
V
V
V
A
A
A
A
A