Datasheet

LT1175
2
1175ff
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Transient 1 sec, Note 12) ...................25V
Input Voltage (Continuous) .......................................20V
Input-to-Output Differential Voltage (Note 13) ..........20V
5V SENSE Pin (with Respect to GND Pin) ......... 2V, –10V
ADJ SENSE Pin
(with Respect to OUTPUT Pin) ...................20V, –0.5V
5V SENSE Pin
(with Respect to OUTPUT Pin) ......................20V, –7V
PIN CONFIGURATION
Output Reverse Voltage ..............................................2V
SHDN Pin to GND Pin Voltage (Note 3) ........13.5V, –20V
SHDN Pin to V
IN
Pin Voltage .............................30V, –5V
Operating Junction Temperature Range (Note 2)
LT1175C ................................................. 0°C to 125°C
LT1175I .............................................. –40°C to 125°C
LT1175MP .......................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
1
2
3
4
8
7
6
5
TOP VIEW
V
IN
I
LIM2
OUTPUT
SENSE
V
IN
I
LIM4
SHD
N
GND
N8 PACKAGE
8-LEAD PDIP
θ
JA
= 80°C/W TO 120°C/W
DEPENDING ON PC BOARD LAYOUT
SHDN
GND
V
IN
SENSE
OUTPUT
Q PACKAGE
5-LEAD PLASTIC DD-PAK
FRONT VIEW
TAB
IS
V
IN
5
4
3
2
1
θ
JA
= 27°C/W TO 60°C/W
DEPENDING ON PC MOUNTING.
SEE DATA SHEET FOR DETAILS
3
2
1
FRONT VIEW
TAB IS
V
IN
GND
V
IN
OUTPUT
ST PACKAGE
3-LEAD PLASTIC SOT-223
θ
JA
= 50°C/W
WITH BACKPLANE AND 10cm
2
TOPSIDE LAND SOLDERED TO TAB
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
V
IN
I
LIM2
OUTPUT
SENSE
V
IN
I
LIM4
SHD
N
GND
θ
JA
= 60°C/W TO 100°C/W
DEPENDING ON PC BOARD LAYOUT
PINS 1, 8 ARE INTERNALLY CONNECTED TO DIE ATTACH PADDLE FOR HEAT SINKING.
ELECTRICAL CONTACT CAN BE MADE TO EITHER PIN. FOR BEST THERMAL RESISTANCE,
PINS 1, 8 SHOULD BE CONNECTED TO AN EXPANDED LAND THAT IS OVER AN INTERNAL
OR BACKSIDE PLANE.
SEE APPLICATIONS INFORMATION
T PACKAGE
5-LEAD PLASTIC TO-220
FRONT VIEW
5
4
3
2
1
SHDN
GND
V
IN
SENSE
OUTPUT
TAB IS
V
IN
θ
JA
= 50°C/W, θ
JC
= 5°C/W
(Note 1)