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LT3431 Datasheet(PDF) 2 Page - Linear Technology |
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LT3431 Datasheet(HTML) 2 Page - Linear Technology |
2 / 20 page LT3474/LT3474-1 2 3474fd PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS VIN Pin ........................................................(–0.3V), 36V BIAS Pin....................................................................25V BOOST Pin Voltage ...................................................51V BOOST above SW Pin ...............................................25V OUT, LED Pins (LT3474)............................................15V OUT, LED Pins (LT3474-1).........................................26V PWM Pin...................................................................10V VADJ Pin .....................................................................6V VC, REF, RT Pins ..........................................................3V SHDN Pin...................................................................VIN BIAS Pin Current.........................................................1A Maximum Junction Temperature (Note 2)............. 125°C Operating Temperature Range (Note 3) LT3474E, LT3474E-1 ............................ –40°C to 85°C LT3474I, LT3474I-1............................ –40°C to 125°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C (Note 1) FE PACKAGE 16-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 DNC* OUT LED VIN SW BOOST BIAS GND DNC* GND PWM VADJ VC REF SHDN RT 17 θJC = 8°C/W, θJA = 40°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB *DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT3474EFE#PBF LT3474EFE#TRPBF 3474EFE 16-Lead TSSOP –40°C to 85°C LT3474IFE#PBF LT3474IFE#TRPBF 3474IFE 16-Lead TSSOP –40°C to 125°C LT3474EFE-1#PBF LT3474EFE-1#TRPBF 3474EFE-1 16-Lead TSSOP –40°C to 85°C LT3474IFE-1#PBF LT3474IFE-1#TRPBF 3474IFE-1 16-Lead TSSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage l 3.5 4 V Input Quiescent Current Not Switching 2.6 4 mA Shutdown Current SHDN = 0.3V, VBOOST = 0V, VOUT = 0V 0.01 2 μA LED Pin Current VADJ Tied to VREF VADJ Tied to VREF/5 l l 0.98 0.968 0.193 0.186 1 0.2 1.02 1.025 0.207 0.210 A A A A REF Voltage l 1.23 1.25 1.265 V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VBOOST = 16V, VOUT = 4V unless otherwise noted (Note 3). |
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