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LT3433 Datasheet(PDF) 2 Page - Linear Technology |
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LT3433 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  2 LT1766/LT1766-5 1766fa (Note 1) Input Voltage (VIN) ................................................. 60V BOOST Pin Above SW ............................................ 35V BOOST Pin Voltage ................................................. 68V SYNC, SENSE Voltage (LT1766-5) ........................... 7V SHDN Voltage ........................................................... 6V BIAS Pin Voltage .................................................... 30V FB Pin Voltage/Current (LT1766) ................... 3.5V/2mA ORDER PART NUMBER LT1766EFE LT1766IFE LT1766EFE-5 LT1766IFE-5 TJMAX = 125°C, θJA = 85°C/W, θJC (PIN 8) = 25°C/W FOUR CORNER PINS SOLDERED TO GROUND PLANE ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO GN PACKAGE 16-LEAD PLASTIC SSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 GND SW NC VIN NC BOOST NC GND GND SHDN SYNC NC FB/SENSE VC BIAS GND Operating Junction Temperature Range LT1766EFE/LT1766EFE-5/LT1766EGN/ LT1766EGN-5 (Note 8,10) ................. – 40 °C to 125°C LT1766IFE/LT1766IFE-5/ LT1766IGN/LT1766IGN-5 (Note 8,10) – 40 °C to 125°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ORDER PART NUMBER LT1766EGN LT1766IGN LT1766EGN-5 LT1766IGN-5 GN PART MARKING 1766 1766I 17665 1766I5 FE PACKAGE 16-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 GND SW NC VIN NC BOOST NC GND GND SHDN SYNC NC FB/SENSE VC BIAS GND 17 TJMAX = 125°C, θJA = 45°C/W, θJC (PAD) = 10°C/W EXPOSED PAD (PIN 17) IS GND. MUST BE SOLDERED TO PCB PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Voltage (VREF) (LT1766) 5.5V ≤ VIN ≤ 60V 1.204 1.219 1.234 V VOL + 0.2 ≤ VC ≤ VOH – 0.2 q 1.195 1.243 V SENSE Voltage (LT1766-5) 5.5V ≤ VIN ≤ 60V 4.94 5 5.06 V VOL + 0.2V ≤ VC ≤ VOH – 0.2V q 4.90 5.10 V SENSE Pin Resistance (LT1766-5) 9.5 13.8 19 k Ω FB Input Bias Current (LT1766) q –0.5 –1.5 µA Error Amp Voltage Gain (Notes 2, 9) 200 400 V/V Error Amp gm dl (VC) = ±10µA (Note 9) 1500 2000 3000 µMho q 1000 4200 µMho VC to Switch gm 1.7 A/V EA Source Current FB = 1V or VSENSE = 4.1V q 125 225 400 µA EA Sink Current FB = 1.4V or VSENSE = 5.7V q 100 225 450 µA VC Switching Threshold Duty Cycle = 0 0.9 V VC High Clamp SHDN = 1V 2.1 V The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. VIN = 15V, VC = 1.5V, SHDN = 1V, BOOST open circuit, SW open circuit, unless otherwise noted. ELECTRICAL CHARACTERISTICS Consult LTC Marketing for parts specified with wider operating temperature ranges. |
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