Datasheet
2
LTC1440/LTC1441/LTC1442
144012fd
S8 PART
MARKING
Voltage
V
+
to V
–
, V
+
to GND, GND to V
–
...........12V to – 0.3V
IN
+
, IN
–
, HYST ................. (V
+
+ 0.3V) to (V
–
– 0.3V)
REF ................................... (V
+
+ 0.3V) to (V
–
– 0.3V)
OUT (LTC1440) .............. (V
+
+ 0.3V) to (GND – 0.3V)
OUT (LTC1441/LTC1442) ... (V
+
+ 0.3V) to (V
–
– 0.3V)
Current
IN
+
, IN
–
, HYST ................................................. 20mA
REF ................................................................... 20mA
OUT .................................................................. 50mA
ABSOLUTE MAXIMUM RATINGS
W
WW
U
OUT Short-Circuit Duration (V
+
≤ 5.5V) .......Continuous
Power Dissipation.............................................. 500mW
Operating Temperature Range
LTC144XC ............................................... 0°C to 70°C
LTC144XI ........................................... – 40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Storage Temperature Range
(DD Package) ................................... –65°C to 125°C
Junction Temperature........................................... 150°C
Junction Temperature (DD Package) .................... 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
Consult LTC Marketing for parts specified with wider operating temperature ranges.
* The temperature grade is identified by a label on the shipping container.
(Note 1)
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
T
JMAX
= 150°C, θ
JA
= 250°C/ W
ORDER PART
NUMBER
LTC1440CDD
LTC1440IDD
DD8 PART
MARKING*
LBTH
ORDER PART
NUMBER
LTC1440CMS8
LTC1440IMS8
MS8 PART
MARKING*
LTBX
ORDER PART
NUMBER
LTC1440CN8
LTC1440CS8
LTC1440IN8
LTC1440IS8
S8 PART
MARKING
1440
1440
1440I
1440I
T
JMAX
= 125°C, θ
JA
= 160°C/ W (DD)
UNDERSIDE METAL CONNECTED TO V
–
(PCB CONNECTION OPTIONAL)
1
2
3
4
8
7
6
5
TOP VIEW
GND
V
–
IN
+
IN
–
OUT
V
+
REF
HYST
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
ORDER PART
NUMBER
ORDER PART
NUMBER
S8 PART
MARKING
1441
1441I
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
T
JMAX
= 150°C, θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C, θ
JA
= 175°C/ W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
V
–
IN A
+
IN A
–
OUT B
V
+
IN B
+
IN B
–
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
V
–
IN A
+
IN B
–
OUT B
V
+
REF
HYST
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
LTC1441CN8
LTC1441CS8
LTC1441IN8
LTC1441IS8
LTC1442CN8
LTC1442CS8
LTC1442IN8
LTC1442IS8
1442
1442I
1
2
3
4
GND
V
–
IN
+
IN
–
8
7
6
5
OUT
V
+
REF
HYST
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1GND
V
–
IN
+
IN
–
OUT
V
+
REF
HYST
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/