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LTC3829 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3829 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 40 page  LTC3829 3 3829fc For more information www.linear.com/LTC3829 ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3829EUHF#PBF LTC3829EUHF#TRPBF 3829 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LTC3829IUHF#PBF LTC3829IUHF#TRPBF 3829 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LTC3829EFE#PBF LTC3829EFE#TRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C LTC3829IFE#PBF LTC3829IFE#TRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Voltage Range 4.5 38 V VOUT Output Voltage Range 0.6 5.0 V VFB Regulated Feedback Voltage ITH Voltage = 1.2V (Note 4) –40°C to 85°C ITH Voltage = 1.2V (Note 4) TJ = 125°C l l 0.5955 0.593 0.600 0.600 0.6045 0.607 V V IFB Feedback Current (Note 4) –15 –50 nA VREFLNREG Reference Voltage Line Regulation VIN = 4.5V to 38V (Note 4) 0.002 0.02 %/V VLOADREG Output Voltage Load Regulation (Note 4) Measured in Servo Loop, ∆ITH Voltage = 1.2V to 0.7V Measured in Servo Loop, ∆ITH Voltage = 1.2V to 1.6V l l 0.01 –0.01 0.1 –0.1 % % gm Transconductance Amplifier gm ITH = 1.2V, Sink/Source 5µA (Note 4) 2.2 mmho IQ Input DC Supply Current Normal Mode Shutdown (Note 5) VIN = 15V VRUN = 0V 4 40 60 mA µA DFMAX Maximum Duty Factor In Dropout, fOSC = 500kHz 93 94 % UVLO Undervoltage Lockout VINTVCC Ramping Down l 3.0 3.3 3.6 V UVLO Hyst UVLO Hysteresis 0.6 V VOVL Feedback Overvoltage Lockout Measured at VFB l 0.64 0.66 0.68 V ISENSE1,2,3+ SENSE+ Pins Bias Current Each Channel, VSENSE1,2,3 = 3.3V, VDIFFP = 3.3V l ±1 ±2 µA ITEMP DCR Tempco Compensation Current VITEMP = 0.2V l 9 10 11 µA ITK/SS Soft-Start Charge Current VTK/SS = 0V l 1.0 1.25 1.5 µA VRUN RUN Pin On Threshold VRUN Rising l 1.1 1.22 1.35 V RUN Pin On Hysteresis 100 mV VSENSE(MAX) Maximum Current Sense Threshold (E-Grade) VFB = 0.5V, VSENSE1,2,3 = 3.3V ILIM = 0V ILIM = Float ILIM = INTVCC l l l 25 45 68 30 50 75 35 55 82 mV mV mV Maximum Current Sense Threshold (I-Grade) VFB = 0.5V, VSENSE1,2,3 = 3.3V ILIM = 0V ILIM = Float ILIM = INTVCC l l l 23 43 66 30 50 75 37 57 84 mV mV mV The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN = 5V, unless otherwise noted. (Note 2) (Note 2) |
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Similar Description - LTC3829_15 |
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