Datasheet

LTC1443/LTC1444/LTC1445
2
144345fe
absoluTe MaxiMuM raTings
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 (LTC1443) ...............(V
+
+ 0.3V) to (GND – 0.3V)
OUT
(LTC1444/LTC1445) ........(V
+
+ 0.3V) to (V
–
– 0.3V)
Current:
IN
+
, IN
–
, HYST ................................................. 20mA
REF ................................................................... 20mA
OUT .................................................................. 50mA
(Note 1)
1
2
3
4
5
6
7
8
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
N PACKAGE
16-LEAD PDIP
16
15
14
13
12
11
10
9
OUT B
OUT A
V
+
IN A
–
IN A
+
IN B
–
IN B
+
REF
OUT C
OUT D
GND/HYST
†
IN D
+
IN D
–
IN C
+
IN C
–
V
–
T
JMAX
= 150°C, θ
JA
= 90°C/ W (N)
T
JMAX
= 150°C, θ
JA
= 150°C/ W (S)
†
PIN 14 IS GND FOR THE LTC1443
†
PIN 14 IS HYST FOR THE LTC1444 AND LTC1445
16
15
14
13
12
11
10
9
17
1
2
3
4
5
6
7
8
OUT C
OUT D
GND/HYST
†
IN D
+
IN D
–
IN C
+
IN C
–
V
–
OUT B
OUT A
V
+
IN A
–
IN A
+
IN B
–
IN B
+
REF
TOP VIEW
DHD16 PACKAGE
16-LEAD (5mm
×
4mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 41.7°C/ W
EXPOSED PAD (PIN 17) INTERNALLY CONNECTED TO V
–
†
PIN 14 IS GND FOR THE LTC1443
†
PIN 14 IS HYST FOR THE LTC1444 AND LTC1445
pin conFiguraTion
OUT Short-Circuit Duration (V
+
≤ 5.5V) ........Continuous
Power Dissipation .............................................. 500mW
Operating Temperature Range
Commercial..............................................0°C to 70°C
Industrial ............................................ –40°C to 85°C
Storage Temperature Range
PDIP, SO ............................................–65°C to 150°C
DFN .................................................... –65°C to 150°C
Lead Temperature Range (Soldering, 10 sec)
PDIP, SO ........................................................... 300°C