LT1170 View Datasheet(PDF) - Linear Technology
Part Name
Description
View to exact match
LT1170 Datasheet PDF : 20 Pages
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LT1170/LT1171/LT1172
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage
LT1170/71/72HV (Note 2) .................................. 60V
LT1170/71/72 (Note 2) ....................................... 40V
Switch Output Voltage
LT1170/71/72HV ................................................ 75V
LT1170/71/72 ..................................................... 65V
LT1172S8 ........................................................... 60V
Feedback Pin Voltage (Transient, 1ms) ................ ±15V
Storage Temperature Range ............... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Operating Junction Temperature Range
LT1170/71/72M ......................... – 55°C to 150°C
LT1170/71/72HVC,
LT1170/71/72C (Oper.) .............. 0°C to 100°C
LT1170/71/72HVC
C
LT1170/71/72C (Sh. Ckt.) .......... 0°C to 125°C
LT1170/71/72HVI,
LT1170/71/72I (Oper.) .......... – 40°C to 100°C
LT1170/71/72HVI,
I
LT1170/71/72I (Sh. Ckt.) ...... – 40°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
GND 1
VC 2
FB 3
NC* 4
8 E2
7 VSW
6 E1
5 VIN
J8 PACKAGE
8-LEAD CERDIP
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
* Do not connect Pin 4 of the LT1172 DIP or SO to external
circuitry. This pin may be active in future revisions.
TJMAX = 150°C, θJA = 100°C/W (J)
TJMAX = 100°C, θJA = 100°C/W (N)
TJMAX = 100°C, θJA = 120°C/W to 150°C/W
depending on board layout (S)
ORDER PART
NUMBER
LT1172MJ8
LT1172CJ8
LT1172CN8
LT1172IN8
LT1172CS8
LT1172IS8
S8 PART MARKING
1172 1172I
BOTTOM VIEW
VSW
1
2
4
3
VC
CASE
IS GND
VIN
FB
K PACKAGE
4-LEAD TO-3 METAL CAN
TJMAX θJC
θJA
LT1170MK
LT1170CK
LT1171MK
LT1171CK
LT1172MK
LT1172CK
150°C
100°C
150°C
100°C
150°C
150°C
2°C/ W
2°C/ W
4°C/ W
4°C/ W
8°C/ W
8°C/ W
35°C/W
35°C/W
35°C/W
35°C/W
35°C/W
35°C/W
Based on continuous operation.
TJMAX = 125°C for intermittent fault conditions.
ORDER PART
NUMBER
LT1170MK
LT1170CK
LT1171MK
LT1171CK
LT1172MK
LT1172CK
TOP VIEW
NC 1
NC 2
GND 3
VC 4
FB 5
NC 6
NC 7
NC 8
16 NC
15 NC
14 E2
13 VSW
12 E1
11 VIN
10 NC
9 NC
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 100°C, θJA = 150°C/W
Based on continuous operation.
TJMAX = 125°C for intermittent fault conditions.
FRONT VIEW
5
VIN
4
VSW
3
GND
2
FB
1
VC
T PACKAGE
5-LEAD PLASTIC TO-220
TJMAX θJC
θJA
LT1170CT/LT1170HVCT
LT1171CT/LT1171HVCT
LT1172CT/LT1172HVCT
100°C 2°C/W 75°C/W
100°C 4°C/W 75°C/W
100°C 8°C/W 75°C/W
Based on continuous operation.
TJMAX = 125°C for intermittent fault conditions.
FRONT VIEW
5
VIN
4
VSW
3
GND
2
FB
1
VC
Q PACKAGE
5-LEAD DD
TJMAX = 100°C, θJA = *°C/W
*θ will vary from
approximately
25°C/W with 2.8
sq. in. of 1oz.
copper to 45°C/W
with 0.20 sq. in. of
1oz. copper.
Somewhat lower
values can be
obtained with
additional copper
layers in multilayer
boards.
ORDER PART
NUMBER
LT1170CQ LT1171HVCQ
LT1170IQ LT1172CQ
LT1171CQ LT1172HVIQ
LT1171IQ
ORDER PART
NUMBER
LT1172CSW
ORDER PART
NUMBER
LT1170CT
LT1170IT
LT1170HVCT
LT1170HVIT
LT1171CT
LT1171IT
LT1171HVCT
LT1172CT
LT1172HVCT
2
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