LT1074/LT1076
ABSOLUTE
AXI U RATI GS
Input Voltage
LT1074/ LT1076 .................................................. 45V
LT1074HV/LT1076HV ......................................... 64V
Switch Voltage with Respect to Input Voltage
LT1074/ LT1076 .................................................. 64V
LT1074HV/LT1076HV ......................................... 75V
Switch Voltage with Respect to Ground Pin (V
SW
Negative)
LT1074/LT1076 (Note 7) ..................................... 35V
LT1074HV/LT1076HV (Note 7) ........................... 45V
Feedback Pin Voltage ..................................... –2V, +10V
Shutdown Pin Voltage (Not to Exceed V
IN
) .............. 40V
PACKAGE/ORDER I FOR ATIO
FRONT VIEW
5
V
IN
V
SW
GND
V
C
FB/SENSE
ORDER PART
NUMBER
LT1076CQ
LT1076IQ
TAB IS
GND
4
3
2
1
Q PACKAGE
5-LEAD PLASTIC DD
LT1076:
θ
JC
= 4°C,
θ
JA
= 30°C/W
FRONT VIEW
7
6
5
4
3
2
1
R PACKAGE
7-LEAD PLASTIC DD
SHDN
V
C
FB/SENSE
GND
I
LIM
V
SW
V
IN
TAB IS
GND
LT1076CR
LT1076IR
LT1076HVCR
LT1076HVIR
TAB IS
GND
LT1076:
θ
JC
= 4°C,
θ
JA
= 30°C/W
FRONT VIEW
7
6
5
4
3
2
1
T7 PACKAGE
7-LEAD PLASTIC TO-220
SHDN
V
C
FB
GND
I
LIM
V
SW
V
IN
TAB IS
GND
LT1074CT7
LT1074HVCT7
LT1074IT7
LT1074HVIT7
LT1076CT7
LT1076HVCT7
LT1074:
θ
JC
= 2.5°C,
θ
JA
= 50°C/W
LT1076:
θ
JC
= 4°C,
θ
JA
= 50°C/W
*Assumes package is soldered to 0.5 IN
2
of 1 oz. copper over internal ground plane or over back side plane.
2
U
U
W
W W
U
W
(Note 1)
I
LIM
Pin Voltage (Forced) ............................................ 5.5V
Maximum Operating Ambient Temperature Range
Commercial ................................................. 0°C to 70°C
Industrial ................................................ –40°C to 85°C
Military ................................................. –55°C to 125°C
Maximum Operating Junction Temperature Range
Commercial ............................................... 0°C to 125°C
Industrial .............................................. –40°C to 125°C
Military ................................................. – 55°C to 150°C
Maximum Storage Temperature ............... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ...................... 300°C
BOTTOM VIEW
V
C
1
2
3
V
IN
ORDER PART
NUMBER
CASE
IS GND
4
FB
V
SW
K PACKAGE
4-LEAD TO-3 METAL CAN
LT1074:
θ
JC
= 2.5°C,
θ
JA
= 35°C/W
LT1076:
θ
JC
= 4°C,
θ
JA
= 35°C/W
LT1074CK
LT1074HVCK
LT1074MK
LT1074HVMK
LT1076CK
LT1076HVCK
LT1076MK
LT1076HVMK
LT1074CT
LT1074HVCT
LT1074IT
LT1074HVIT
LT1076CT
LT1076HVCT
LT1076IT
LT1076HVIT
FRONT VIEW
5
4
3
2
1
T PACKAGE
5-LEAD PLASTIC TO-220
LEADS ARE FORMED STANDARD FOR
STRAIGHT LEADS, ORDER FLOW 06
V
IN
V
SW
GND
V
C
FB
LT1074:
θ
JC
= 2.5°C,
θ
JA
= 50°C/W
LT1076:
θ
JC
= 4°C,
θ
JA
= 50°C/W
LINER [ LINEAR TECHNOLOGY ]
