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LT3477EFE Datasheet(PDF) 2 Page - Linear Technology |
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LT3477EFE Datasheet(HTML) 2 Page - Linear Technology |
2 / 20 page 2 LT3477 3477fb SW Pin Voltage ....................................................... 42V VIN, SHDN Pin Voltage............................................ 25V FBP, FBN Pin Voltage ................................................ 6V VREF Pin Voltage ....................................................... 6V RT, VC, SS Pin Voltage .............................................. 6V IADJ1, IADJ2 Pin Voltage ........................................... 25V ISP1, ISP2, ISN1, ISN2 Pin Voltage .............................. 42V ABSOLUTE MAXIMUM RATINGS (Note 1) PACKAGE/ORDER INFORMATION Junction Temperature .......................................... 125 °C Operating Temperature Range (Note 2) LT3477E ............................................. – 40 °C to 85°C LT3477I ............................................ – 40 °C to 125°C Storage Temperature Range ................. – 65 °C to 125°C Lead Temperature (Soldering, 10 sec) TSSOP .............................................................. 300 °C PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage ● 2.3 2.5 V Quiescent Current VSHDN = 0V 0.1 1.0 µA VSHDN = 2.5V, VC = 0.3V (Not Switching) 5.0 7.5 mA Reference Voltage E Grade ● 1.216 1.235 1.250 V I Grade ● 1.210 1.235 1.260 V Reference Voltage Line Regulation 2.5V < VIN < 25V, VC = 0.3V 0.01 0.03 %/V Maximum VREF Pin Current Out of Pin 100 µA The ● indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 2.5V, VSHDN = 2.5V. ELECTRICAL CHARACTERISTICS TJMAX = 125°C, θJA = 37°C/W EXPOSED PAD (PIN 21) IS PGND (MUST BE SOLDERED TO PCB) TJMAX = 150°C, θJA = 40°C/W EXPOSED PAD (PIN 21) IS PGND (MUST BE SOLDERED TO PCB) FE PACKAGE 20-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 9 10 TOP VIEW 20 19 18 17 16 15 14 13 12 11 VIN RT SHDN SS VC FBN FBP VREF IADJ2 IADJ1 NC NC NC SW SW GND ISN1 ISP1 ISN2 ISP2 21 20 19 18 17 16 6 7 8 TOP VIEW 21 UF PACKAGE 20-LEAD (4mm × 4mm) PLASTIC QFN 9 10 5 4 3 2 1 11 12 13 14 15 NC NC VIN RT SHDN ISP1 ISN2 ISP2 IADJ1 IADJ2 LT3477EFE LT3477IFE ORDER PART NUMBER LT3477EUF LT3477IUF Consult LTC Marketing for parts specified with wider operating temperature ranges. UF PART MARKING ORDER PART NUMBER SW PART MARKING Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ 3477 3477 |
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