Datasheet LTC3829 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp |
| 页数 / 页 | 40 / 3 — ORDER INFORMATION (Note 2) LEAD FREE FINISH. TAPE AND REEL. PART … |
| 修订版 | E |
| 文件格式/大小 | PDF / 960 Kb |
| 文件语言 | 英语 |
ORDER INFORMATION (Note 2) LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. PACKAGE DESCRIPTION. TEMPERATURE RANGE
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LTC3829
ORDER INFORMATION (Note 2) LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE AUTOMOTIVE PRODUCTS**
LTC3829EFE#WPBF LTC3829EFE#WTRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C LTC3829IFE#WPBF LTC3829IFE#WTRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**
Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.
ELECTRICAL CHARACTERISTICS 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) 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 l 0.5955 0.600 0.6045 V ITH Voltage = 1.2V (Note 4) TJ = 125°C l 0.593 0.600 0.607 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, l 0.01 0.1 % ∆ITH Voltage = 1.2V to 0.7V Measured in Servo Loop, l –0.01 –0.1 % ∆ITH Voltage = 1.2V to 1.6V gm Transconductance Amplifier gm ITH = 1.2V, Sink/Source 5µA (Note 4) 2.2 mmho IQ Input DC Supply Current (Note 5) Normal Mode VIN = 15V 4 mA Shutdown VRUN = 0V 40 60 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 I + SENSE1,2,3 SENSE+ Pins Bias Current Each Channel, VSENSE1,2,3 = 3.3V, l ±1 ±2 µA VDIFFP = 3.3V 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 VFB = 0.5V, VSENSE1,2,3 = 3.3V (E-Grade) ILIM = 0V l 25 30 35 mV ILIM = Float l 45 50 55 mV ILIM = INTVCC l 68 75 82 mV Maximum Current Sense Threshold VFB = 0.5V, VSENSE1,2,3 = 3.3V (I-Grade) ILIM = 0V l 23 30 37 mV ILIM = Float l 43 50 57 mV ILIM = INTVCC l 66 75 84 mV Rev. E For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts
ORDER INFORMATION (Note 2) LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE AUTOMOTIVE PRODUCTS**
LTC3829EFE#WPBF LTC3829EFE#WTRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C LTC3829IFE#WPBF LTC3829IFE#WTRPBF LTC3829 38-Lead Plastic TSSOP –40°C to 125°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**
Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.
ELECTRICAL CHARACTERISTICS 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) 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 l 0.5955 0.600 0.6045 V ITH Voltage = 1.2V (Note 4) TJ = 125°C l 0.593 0.600 0.607 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, l 0.01 0.1 % ∆ITH Voltage = 1.2V to 0.7V Measured in Servo Loop, l –0.01 –0.1 % ∆ITH Voltage = 1.2V to 1.6V gm Transconductance Amplifier gm ITH = 1.2V, Sink/Source 5µA (Note 4) 2.2 mmho IQ Input DC Supply Current (Note 5) Normal Mode VIN = 15V 4 mA Shutdown VRUN = 0V 40 60 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 I + SENSE1,2,3 SENSE+ Pins Bias Current Each Channel, VSENSE1,2,3 = 3.3V, l ±1 ±2 µA VDIFFP = 3.3V 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 VFB = 0.5V, VSENSE1,2,3 = 3.3V (E-Grade) ILIM = 0V l 25 30 35 mV ILIM = Float l 45 50 55 mV ILIM = INTVCC l 68 75 82 mV Maximum Current Sense Threshold VFB = 0.5V, VSENSE1,2,3 = 3.3V (I-Grade) ILIM = 0V l 23 30 37 mV ILIM = Float l 43 50 57 mV ILIM = INTVCC l 66 75 84 mV Rev. E For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts