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LT3825EFE Datasheet(PDF) 2 Page - Linear Technology |
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LT3825EFE Datasheet(HTML) 2 Page - Linear Technology |
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2 / 32 page  LT3825 2 3525fa PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS VCC to GND Low Impedance Source ........................ –0.3V to 18V Current Fed (VCC has Internal 19.5V Clamp) ...........30mA into VCC UVLO, SYNC Pin Voltage ........................... –0.3V to VCC SENSE–, SENSE+ Pin Voltage...................... –0.5V, +0.5V FB Pin Current........................................................±2mA VC Pin Current....................................................... ±1mA Operating Junction Temperature Range (Notes 2, 3) .......................................... –40°C to 125°C Storage Temperature Range.................. –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C (Note 1) ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 14V; PG, SG Open; VC = 1.5V, VSENSE– = 0V; RCMP = 1k, RtON = 90k, RPGDLY = 27.4k, RENDLY = 90k, unless otherwise specified. FE PACKAGE 16-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 SG VCC tON ENDLY SYNC SFST OSC FB PG PGDLY RCMP CCMP SENSE+ SENSE– UVLO VC 17 TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply VCC Turn-On Voltage l 14.0 15.3 16.0 V VCC Turn-Off Voltage ● 8 9.7 11 V VCC Hysteresis VCC(ON) – VCC(OFF) ● 4.0 5.6 6.5 V VCC Shunt Clamp VUVLO = 0V, IVCC = 15mA ● 19.5 20.5 V VCC Supply Current (Note 5) (ICC)VC = Open ● 4 6.4 10 mA VCC Start-Up Current VCC = 10V ● 180 400 μA Feedback Amplifier Feedback Regulation Voltage (VFB) ● 1.220 1.237 1.251 V Feedback Pin Input Bias Current RCMP Open 200 nA Feedback Amplifier Transconductance ΔIC = ±10μA ● 700 1000 1400 μmho Feedback Amplifier Source or Sink Current ● 25 55 90 μA Feedback Amplifier Clamp Voltage VFB = 0.9V VFB = 1.4V 2.56 V ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT3825EFE#PBF LT3825EFE#TRPBF 3825EFE 16-Lead Plastic 4.4mm TSSOP –40°C to 125°C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT3825EFE LT3825EFE#TR 3825EFE 16-Lead Plastic 4.4mm TSSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. 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/ |
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