LTC3864HMSE#PBF

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Analog Devices Inc./Maxim Integrated

DC/DC CONTROLLER, BUCK, 3.5V TO 60V SUPPLY, 1 OUTPUT, 100% DUTY CYCLE, 810KHZ, MSOP-EP-12

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LTC3864HMSE#PBF

Active

Analog Devices Inc./Maxim Integrated

DC/DC CONTROLLER, BUCK, 3.5V TO 60V SUPPLY, 1 OUTPUT, 100% DUTY CYCLE, 810KHZ, MSOP-EP-12

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3864 Series

The LTC3864 is a robust, high voltage step-down DC/DC controller optimized for automotive and industrial applications. It drives a P-channel power MOSFET switch allowing 100% duty cycle operation. The wide input and output voltage ranges cover a multitude of applications. This device has been verified with the failure mode and effects analysis (FMEA) procedure for operation during failure conditions.The LTC3864 offers excellent light load efficiency, drawing only 40μA quiescent current in a user programmable Burst Mode operation. Its peak current mode, constant frequency PWM architecture provides for good control of switching frequency and output current limit. The switching frequency can be programmed from 50kHz to 850kHz with an external resistor and can be synchronized to an external clock from 75kHz to 750kHz.The LTC3864 offers programmable soft-start or output tracking. Safety features include overvoltage protection, overcurrent and short-circuit protection including frequency foldback and a power good output signal.The LTC3864 is available in thermally enhanced 12-Pin MSOP and 3mm × 4mm DFN packages.APPLICATIONSIndustrial and Automotive Power SuppliesTelecom Power SuppliesDistributed Power Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3864HMSE#PBF

Clock Sync	No
Control Features	Soft Start, Current Limit, Frequency Control, Enable, Power Good
Duty Cycle (Max)	100 %
Frequency - Switching (Max)	850 kHz
Frequency - Switching (Min)	50 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package Features	Exposed Pad
Package Length	0.118 in
Package Name	12-MSOP-EP, 12-TSSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	60 V
Voltage - Supply (Vcc/Vdd) Minimum	3.5 V

LTC3864 Series

Part	Package / Case	Function	Mounting Type	Topology	Output Configuration	Output Phases	Clock Sync	Number of Outputs	Frequency - Switching (Max)	Frequency - Switching (Min)	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Package Length	Package Name	Package Width	Control Features	Operating Temperature (Max)	Operating Temperature (Min)	Output Type	Duty Cycle (Max)	Synchronous Rectifier	Package Features
Analog Devices Inc./Maxim Integrated LTC3864IDE#TRPBF	12-WFDFN Exposed Pad	Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	4 mm	12-DFN	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No
Analog Devices Inc./Maxim Integrated LTC3864MPDE#TRPBF	12-WFDFN Exposed Pad	Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	4 mm	12-DFN	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	150 °C	-55 °C	Transistor Driver	100 %	No
Analog Devices Inc./Maxim Integrated LTC3864EDE#PBF	12-WFDFN Exposed Pad	Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	4 mm	12-DFN	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No
Analog Devices Inc./Maxim Integrated LTC3864EMSE#TRPBF		Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	0.118 in	12-MSOP-EP 12-TSSOP	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3864HMSE#TRPBF		Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	0.118 in	12-MSOP-EP 12-TSSOP	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	150 °C	-40 °C	Transistor Driver	100 %	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3864IMSE#PBF		Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	0.118 in	12-MSOP-EP 12-TSSOP	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3864IDE#PBF	12-WFDFN Exposed Pad	Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	4 mm	12-DFN	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No
Analog Devices Inc./Maxim Integrated LTC3864IMSE#TRPBF		Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	0.118 in	12-MSOP-EP 12-TSSOP	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3864EDE#TRPBF	12-WFDFN Exposed Pad	Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	4 mm	12-DFN	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No
Analog Devices Inc./Maxim Integrated LTC3864EMSE#PBF		Step-Down	Surface Mount	Buck	Positive	1	No	1	850 kHz	50 kHz	3.5 V	60 V	0.118 in	12-MSOP-EP 12-TSSOP	3 mm	Current Limit Enable Frequency Control Power Good Soft Start	125 °C	-40 °C	Transistor Driver	100 %	No	Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Product Change Notice EN

Datasheet

LTC3864: 60V Low IQStep-Down DC/DC Controller with 100% Duty Cycle Capability Data Sheet (Rev.C)

R526 Reliability Data