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LTM4607 数据表(PDF) 3 Page - Linear Technology |
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LTM4607 数据表(HTML) 3 Page - Linear Technology |
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3 / 30 page  LTC3780 3 3780ff For more information www.linear.com/LTC3780 elecTrical characTerisTics The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 7) VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop VOSENSE Feedback Reference Voltage ITH = 1.2V, –40°C ≤ T ≤ 85°C (Note 3) –55°C ≤ T ≤ 125°C l l 0.792 0.792 0.800 0.800 0.808 0.811 V V IVOSENSE Feedback Pin Input Current (Note 3) –5 –50 nA VLOADREG Output Voltage Load Regulation (Note 3) ∆ITH = 1.2V to 0.7V ∆ITH = 1.2V to 1.8V l l 0.1 –0.1 0.5 –0.5 % % VREF(LINEREG) Reference Voltage Line Regulation VIN = 4V to 30V, ITH = 1.2V (Note 3) 0.002 0.02 %/V gm(EA) Error Amplifier Transconductance ITH = 1.2V, Sink/Source = 3µA (Note 3) 0.32 mS gm(GBW) Error Amplifier GBW (Note 8) 0.6 MHz IQ Input DC Supply Current Normal Standby Shutdown Supply Current (Note 4) VRUN = 0V, VSTBYMD > 2V VRUN = 0V, VSTBYMD = Open 2400 1500 55 70 µA µA µA VFCB Forced Continuous Threshold 0.76 0.800 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.85V –0.30 –0.18 –0.1 µA VBINHIBIT Burst Inhibit (Constant Frequency) Threshold Measured at FCB Pin 5.3 5.5 V UVLO Undervoltage Reset VIN Falling l 3.8 4 V VOVL Feedback Overvoltage Lockout Measured at VOSENSE Pin 0.84 0.86 0.88 V ISENSE Sense Pins Total Source Current VSENSE– = VSENSE+ = 0V –380 µA VSTBYMD(START) Start-Up Threshold VSTBYMD Rising 0.4 0.7 V VSTBYMD(KA) Keep-Alive Power-On Threshold VSTBYMD Rising, VRUN = 0V 1.25 V orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3780EG#PBF LTC3780EG#TRPBF LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG#PBF LTC3780IG#TRPBF LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780EUH#PBF LTC3780EUH#TRPBF 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH#PBF LTC3780IUH#TRPBF 3780I 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3780EG LTC3780EG#TR LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG LTC3780IG#TR LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780MPG LTC3780MPG#TR LTC3780MPG 24-Lead Plastic SSOP –55°C to 125°C LTC3780EUH LTC3780EUH#TR 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH LTC3780IUH#TR 3780I 32-Lead (5mm × 5mm) Plastic QFN –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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