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LT1171CQ Datasheet(PDF) 2 Page - Linear Technology |
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LT1171CQ Datasheet(HTML) 2 Page - Linear Technology |
2 / 20 page 2 LT1170/LT1171/LT1172 * 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. LT1172MJ8 LT1172CJ8 LT1172CN8 LT1172IN8 LT1172CS8 LT1172IS8 S8 PART MARKING 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 ORDER PART NUMBER TJMAX = 100°C, θJA = *°C/W LT1170CQ LT1170IQ LT1171CQ LT1171IQ TJMAX θJC θJA LT1170MK 150 °C2°C/W 35 °C/W LT1170CK 100 °C2°C/W 35 °C/W LT1171MK 150 °C4°C/W 35 °C/W LT1171CK 100 °C4°C/W 35 °C/W LT1172MK 150 °C8°C/W 35 °C/W LT1172CK 150 °C8°C/W 35 °C/W Based on continuous operation. TJMAX = 125°C for intermittent fault conditions. LT1170MK LT1170CK LT1171MK LT1171CK LT1172MK LT1172CK 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) 1172 N8 PACKAGE 8-LEAD PDIP 1 2 3 4 8 7 6 5 TOP VIEW GND VC FB NC* E2 VSW E1 VIN J8 PACKAGE 8-LEAD CERDIP 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. 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 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, LT1170/71/72I (Sh. Ckt.) ...... – 40 °C to 125°C (Note 1) TJMAX θJC θJA LT1170CT/LT1170HVCT 100 °C2°C/W 75 °C/W LT1171CT/LT1171HVCT 100 °C4°C/W 75 °C/W LT1172CT/LT1172HVCT 100 °C8°C/W 75 °C/W Based on continuous operation. TJMAX = 125°C for intermittent fault conditions. LT1170CT LT1170IT LT1170HVCT LT1170HVIT LT1171CT LT1171IT LT1171HVCT LT1172CT LT1172HVCT TJMAX = 100°C, θJA = 150°C/W Based on continuous operation. TJMAX = 125°C for intermittent fault conditions. LT1172CSW ORDER PART NUMBER ORDER PART NUMBER ORDER PART NUMBER 2 4 1 3 VSW VC FB CASE IS GND VIN K PACKAGE 4-LEAD TO-3 METAL CAN BOTTOM VIEW Q PACKAGE 5-LEAD DD VIN VSW GND FB VC FRONT VIEW 5 4 3 2 1 ORDER PART NUMBER TOP VIEW SW PACKAGE 16-LEAD PLASTIC SO WIDE 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 NC NC GND VC FB NC NC NC NC NC E2 VSW E1 VIN NC NC T PACKAGE 5-LEAD PLASTIC TO-220 VIN VSW GND FB VC FRONT VIEW 5 4 3 2 1 1172I LT1171HVCQ LT1172CQ LT1172HVIQ C I PACKAGE/ORDER I FOR ATIO ABSOLUTE AXI U RATI GS |
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