LTC3834EUFD#TRPBF

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Analog Devices Inc./Maxim Integrated

30ΜA IQSYNCHRONOUS STEP-DOWN CONTROLLER

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LTC3834EUFD#TRPBF

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Analog Devices Inc./Maxim Integrated

30ΜA IQSYNCHRONOUS STEP-DOWN CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3834 Series

The LTC3834 is a high performance step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 650kHz.The 30μA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3834 features a precision 0.8V reference and a power good output indicator. The 4V to 36V input supply range encompasses a wide range of battery chemistries.The TRACK/SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. A reduced feature set version of the part (LTC3834-1) is available in a smaller, lower pin count package.PHASMDEXTVCCPGOODPACKAGESLTC3834YesYesYesFE20/4mm × 5mm QFNLTC3834-1NoNoNoGN16/3mm × 5mm DFNApplicationsAutomotive SystemsTelecom SystemsBattery-Operated Digital DevicesDistributed DC Power Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3834EUFD#TRPBF

Clock Sync	No
Control Features	Phase Control, Enable, Power Good, Tracking, Soft Start
Duty Cycle (Max)	99.4 %
Frequency - Switching (Max)	530 kHz
Frequency - Switching (Min)	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	20-WFQFN Exposed Pad
Package Length	4 mm
Package Name	20-QFN
Package Width	5 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	36 V
Voltage - Supply (Vcc/Vdd) Minimum	4 V

LTC3834 Series

Part	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Function	Frequency - Switching (Max)	Frequency - Switching (Min)	Output Configuration	Mounting Type	Synchronous Rectifier	Duty Cycle (Max)	Clock Sync	Control Features	Number of Outputs	Package / Case	Package Length	Package Name	Package Width	Operating Temperature (Max)	Operating Temperature (Min)	Topology	Output Phases	Output Type	Package Features
Analog Devices Inc./Maxim Integrated LTC3834EUFD#PBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1	20-WFQFN Exposed Pad	4 mm	20-QFN	5 mm	85 °C	-40 °C	Buck	1	Transistor Driver
Analog Devices Inc./Maxim Integrated LTC3834EUFD#TRPBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1	20-WFQFN Exposed Pad	4 mm	20-QFN	5 mm	85 °C	-40 °C	Buck	1	Transistor Driver
Analog Devices Inc./Maxim Integrated LTC3834IFE#PBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1		0.173 in	20-TSSOP 20-TSSOP-EP	4.4 mm	85 °C	-40 °C	Buck	1	Transistor Driver	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3834EFE#PBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1		0.173 in	20-TSSOP 20-TSSOP-EP	4.4 mm	85 °C	-40 °C	Buck	1	Transistor Driver	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3834EFE#TRPBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1		0.173 in	20-TSSOP 20-TSSOP-EP	4.4 mm	85 °C	-40 °C	Buck	1	Transistor Driver	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3834IUFD#TRPBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1	20-WFQFN Exposed Pad	4 mm	20-QFN	5 mm	85 °C	-40 °C	Buck	1	Transistor Driver
Analog Devices Inc./Maxim Integrated LTC3834IUFD#PBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1	20-WFQFN Exposed Pad	4 mm	20-QFN	5 mm	85 °C	-40 °C	Buck	1	Transistor Driver
Analog Devices Inc./Maxim Integrated LTC3834IFE#TRPBF	4 V	36 V	Step-Down	530 kHz	250 kHz	Positive	Surface Mount	Yes	99.4 %	No	Enable Phase Control Power Good Soft Start Tracking	1		0.173 in	20-TSSOP 20-TSSOP-EP	4.4 mm	85 °C	-40 °C	Buck	1	Transistor Driver	Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3834EUFD#TRPBF | Datasheet

R384 Reliability Data