Datasheet

2
LT1638/LT1639
16389fc
ABSOLUTE MAXIMUM RATINGS
W
WW
U
Specified Temperature Range (Note 4)
LT1638C/LT1639C ............................. –40°C to 85°C
LT1638I/LT1639I................................ –40°C to 85°C
LT1638H/LT1639H ........................... –40°C to 125°C
Junction Temperature........................................... 150°C
DD Package ...................................................... 125°C
Storage Temperature Range ................. –65°C to 150°C
DD Package ...................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Total Supply Voltage (V
+
to V
–
) .............................. 44V
Input Differential Voltage ......................................... 44V
Input Current ...................................................... ±25mA
Output Short-Circuit Duration (Note 2) .........Continuous
Operating Temperature Range (Note 3)
LT1638C/LT1639C ............................. –40°C to 85°C
LT1638I/LT1639I................................ –40°C to 85°C
LT1638H/LT1639H ........................... –40°C to 125°C
PACKAGE/ORDER INFORMATION
W
U
U
ORDER
PART NUMBER
ORDER
PART NUMBER
LT1638CMS8
LT1638IMS8
LT1638CN8
LT1638IN8
LT1638CS8
LT1638IS8
LT1638HS8
MS8 PART
MARKING*
S8 PART MARKING
1638
1638I
1638H
1
2
3
4
OUT A
–IN A
+IN A
V
–
8
7
6
5
V+
OUT B
–IN B
+IN B
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
A
B
T
JMAX
= 150°C, θ
JA
= 300°C/W (MS8)
T
JMAX
= 150°C, θ
JA
= 150°C/W (N8)
T
JMAX
= 150°C, θ
JA
= 190°C/W (S8)
LTCY
(Note 1)
*The temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
S PACKAGE
14-LEAD PLASTIC SO
N PACKAGE
14-LEAD PDIP
1
2
3
4
5
6
7
14
13
12
11
10
9
8
A
B
C
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V
–
+IN C
– IN C
OUT C
D
T
JMAX
= 150°C, θ
JA
= 130°C/W (N)
T
JMAX
= 150°C, θ
JA
= 160°C/W (S)
ORDER
PART NUMBER
LT1639CN
LT1639IN
LT1639CS
LT1639IS
LT1639HS
ORDER
PART NUMBER
LT1638CDD
LT1638IDD
T
JMAX
= 125°C, θ
JA
= 160°C/W (NOTE 10)
UNDERSIDE METAL INTERNALLY CONNECTED TO V
–
DD PART MARKING*
LAAL
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1OUT A
–IN A
+IN A
V
–
V
+
OUT B
–IN B
+IN B
A
B
1
2
3
4
8
7
6
5
TOP VIEW
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
V
+
OUT B
–IN B
+IN B
A
B
OUT A
–IN A
+IN A
V
–