LTC3863EMSE#TRPBF

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Analog Devices Inc./Maxim Integrated

SWITCHING VOLTAGE REGULATORS 60V L IQ INV DC/DC CNTR

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LTC3863EMSE#TRPBF

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Analog Devices Inc./Maxim Integrated

SWITCHING VOLTAGE REGULATORS 60V L IQ INV DC/DC CNTR

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3863 Series

The LTC3863 is a robust, inverting DC/DC PMOS controller optimized for automotive and industrial applications. It drives a P-channel power MOSFET to generate a negative output and requires just a single inductor to complete the circuit. Output voltages from –0.4V to –150V are typically achievable with higher voltages possible, only limited by external components.The LTC3863 offers excellent light load efficiency, drawing only 70μA 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 LTC3863 offers programmable soft-start or output tracking. Safety features include overvoltage, overcurrent and short-circuit protection including frequency foldback.The LTC3863 is available in thermally enhanced 12-lead MSOP and 3mm × 4mm DFN packages.ApplicationsIndustrial and Automotive Power SuppliesTelecom Power SuppliesDistributed Power Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3863EMSE#TRPBF

Clock Sync	No
Control Features	Soft Start, Enable, Frequency Control, Current Limit
Frequency - Switching (Max)	850 kHz
Frequency - Switching (Min)	50 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive or Negative, Positive, Negative
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

LTC3863 Series

Part	Package Name	Frequency - Switching (Max)	Frequency - Switching (Min)	Package Length	Package Features	Package Width	Function	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Output Phases	Output Configuration	Output Type	Topology	Control Features	Clock Sync	Number of Outputs	Synchronous Rectifier	Package / Case
Analog Devices Inc./Maxim Integrated LTC3863HMSE#PBF	12-MSOP-EP 12-TSSOP	850 kHz	50 kHz	0.118 in	Exposed Pad	3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	150 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No
Analog Devices Inc./Maxim Integrated LTC3863HMSE#TRPBF	12-MSOP-EP 12-TSSOP	850 kHz	50 kHz	0.118 in	Exposed Pad	3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	150 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No
Analog Devices Inc./Maxim Integrated LTC3863EDE#PBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	125 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863HDE#TRPBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	150 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863MPDE#PBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-55 °C	150 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863IDE#PBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	125 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863MPDE#TRPBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-55 °C	150 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863IDE#TRPBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	125 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863EDE#TRPBF	12-DFN	850 kHz	50 kHz	4 mm		3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	125 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3863EMSE#PBF	12-MSOP-EP 12-TSSOP	850 kHz	50 kHz	0.118 in	Exposed Pad	3 mm	Step-Down	3.5 V	60 V	Surface Mount	-40 °C	125 °C	1	Negative Positive Positive or Negative	Transistor Driver	Buck	Current Limit Enable Frequency Control Soft Start	No	1	No

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3863EMSE#TRPBF | Datasheet

Tape and Reel Packaging

R526 Reliability Data