LTC3829IFE#WPBF

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Analog Devices Inc./Maxim Integrated

DC/DC CNTRLR SINGLE-OUT STEP DOWN 850KHZ AUTOMOTIVE AEC-Q100 38-PIN TSSOP EP TUBE

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LTC3829IFE#WPBF

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Analog Devices Inc./Maxim Integrated

DC/DC CNTRLR SINGLE-OUT STEP DOWN 850KHZ AUTOMOTIVE AEC-Q100 38-PIN TSSOP EP TUBE

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3829 Series

The LTC3829 is a high performance 3-phase single output synchronous step-down DC/DC switching controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise due to ESR of the input capacitors are minimized by operating the three controller output stages out of phase.The LTC3829 can be configured for 6-phase operation, has DCR temperature compensation, and output foldback current limiting. This device features a precision 0.6V reference and a power good indicator.Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode operation. A differential amplifier provides true remote sensing of the output voltage at the point of load.The LTC3829 is available in both low profile 38-pin 5mm × 7mm QFN and Exposed Pad FE packages.ApplicationsNotebook and Palmtop ComputersTelecom SystemsDC Power Distribution Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3829IFE#WPBF

Clock Sync	No
Control Features	Power Good, Soft Start, Frequency Control, Current Limit, Enable, Tracking
Duty Cycle (Max)	94 %
Frequency - Switching (Max)	770 kHz
Frequency - Switching (Min)	250 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	3
Output Type	Transistor Driver
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	38-TFSOP, 38-TSSOP-EP
Package Width	4.4 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	38 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

LTC3829 Series

Part	Function	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Operating Temperature (Max)	Operating Temperature (Min)	Package Width	Package Name	Package Length	Topology	Output Configuration	Clock Sync	Package / Case	Control Features	Synchronous Rectifier	Output Type	Mounting Type	Output Phases	Frequency - Switching (Min)	Frequency - Switching (Max)	Number of Outputs	Duty Cycle (Max)	Package Features	Qualification	Grade
Analog Devices Inc./Maxim Integrated LTC3829EUHF#PBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	7 mm	38-QFN	5 mm	Buck	Positive	No	38-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %
Analog Devices Inc./Maxim Integrated LTC3829IUHF#PBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	7 mm	38-QFN	5 mm	Buck	Positive	No	38-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %
Analog Devices Inc./Maxim Integrated LTC3829IUHF#TRPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	7 mm	38-QFN	5 mm	Buck	Positive	No	38-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %
Analog Devices Inc./Maxim Integrated LTC3829EFE#TRPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3829IFE#PBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3829IFE#WPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad	AEC-Q100	Automotive
Analog Devices Inc./Maxim Integrated LTC3829EUHF#TRPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	7 mm	38-QFN	5 mm	Buck	Positive	No	38-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %
Analog Devices Inc./Maxim Integrated LTC3829EFE#PBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3829IFE#WTRPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad	AEC-Q100	Automotive
Analog Devices Inc./Maxim Integrated LTC3829IFE#TRPBF	Step-Down	38 V	4.5 V	125 °C	-40 °C	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Buck	Positive	No		Current Limit Enable Frequency Control Power Good Soft Start Tracking	Yes	Transistor Driver	Surface Mount	3	250 kHz	770 kHz	3	94 %	Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

R526 Reliability Data