LT1185CQ#TR Linear Technology, LT1185CQ#TR Datasheet - Page 2

• Manufacturer Part Number: LT1185CQ#TR
• Description: IC REG LDO ADJUSTABLE 3A DDPAK-5
• Manufacturer: Linear Technology

Specifications of LT1185CQ#TR

• Regulator Topology: Negative Adjustable
• Voltage - Output: -2.5 ~ -25 V
• Voltage - Input: -4.2 ~ -35 V
• Voltage - Dropout (typical): 0.67V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): Adjustable
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-5, D²Pak (5 leads + Tab), TO-263BA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2
LT1185
ABSOLUTE AXI U RATI GS
*See Application Section for details on calculating Operation Junction Temperature
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER I FOR ATIO
The
Adjustable version, V
PARAMETER
Reference Voltage (At FB Pin)
Reference Voltage Tolerance (At FB Pin) (Note 2)
Feedback Pin Bias Current
Droput Voltage (Note 3)
Input Voltage .......................................................... 35V
Input-Output Differential ......................................... 30V
FB Voltage ................................................................ 7V
REF Voltage .............................................................. 7V
Output Voltage ........................................................ 30V
Output Reverse Voltage ............................................ 2V
Operating Ambient Temperature Range
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
ORDER PART
LT1185C ............................................... 0°C to 70°C
LT1185I ............................................. – 40°C to 85°C
LT1185M (OBSOLETE) .................... – 55°C to 125°C
V
●
GND
OUT
NUMBER
denotes specifications which apply over the operating temperature range, otherwise specifications are at T
θ
OBSOLETE PACKAGE
JC MAX
4-LEAD TO-3 METAL CAN
= 2.5°C/ W, θ
BOTTOM VIEW
K PACKAGE
1
4
W
IN
JA
2
3
= 7.4V, V
= 35°C/W
LT1185MK
W W
FB
REF
OUT
V
U
IN
= 5V, I
(CASE)
OUT
CONDITIONS
V
1mA ≤ I
V
P ≤ 25W (Note 6), V
T
V
I
I
OUT
OUT
MIN
IN
IN
OUT
W
= 1mA, R
ORDER PART
– V
– V
= 0.5A, V
= 3A, V
≤ T
= V
U
NUMBER
OUT
OUT
OUT
J
REF
TAB
V
≤ T
IS
IN
= 5V, V
= 1.2V to V
≤ 3A
OUT
MAX
LIM
OUT
T
JMAX
= 5V
U
5-LEAD PLASTIC DD
= 4.02k, unless otherwise noted.
(Note 9)
= 5V
(Note 1)
OUT
= 150°C, θ
OUT
FRONT VIEW
Q PACKAGE
IN
= V
= 5V
= 30V
REF
JA
5
4
3
2
1
Operating Junction Temperature Range*
Control Section
Power Transistor Section
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
= 30°C/W
LT1185CQ
LT1185IQ
LT1185C ............................................. 0°C to 125°C
LT1185I .......................................... – 40°C to 125°C
LT1185M (OBSOLETE) ................... – 55°C to 150°C
LT1185C ............................................. 0°C to 150°C
LT1185I .......................................... – 40°C to 150°C
LT1185M (OBSOLETE) ................... – 55°C to 175°C
REF
V
V
FB
GND
OUT
IN
●
●
TAB IS V
ORDER PART
MIN
NUMBER
IN
θ
JC MAX
5-LEAD PLASTIC TO-220
= 2.5°C/ W, θ
TYP
2.37
0.20
0.67
0.3
0.7
FRONT VIEW
T PACKAGE
1
5
4
3
2
1
A
= 25°C.
JA
= 50°C/W
LT1185CT
LT1185IT
MAX
±2.5
0.37
1.00
±1
2
UNITS
REF
V
V
FB
GND
OUT
IN
1185ff
µA
%
%
V
V
V