LTC3862IUH

Obsolete

Analog Devices Inc./Maxim Integrated

IC POWER MANAGEMENT

LTC3862IUH

Obsolete

Analog Devices Inc./Maxim Integrated

IC POWER MANAGEMENT

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3862 Series

The LTC3862 is a two phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. Two phase operation reduces system filtering capacitance and inductance requirements.The operating frequency can be set with an external resistor over a 75kHz to 500kHz range and can be synchronized to an external clock using the internal PLL. Multi-phase operation is possible using the SYNC input, the CLKOUT output and the PHASEMODE control pin allowing 2-, 3-, 4-, 6- or 12-phase operation.Other features include an internal 5V LDO with undervoltage lockout protection for the gate drivers, a precision RUN pin threshold with programmable hysteresis, soft-start and programmable leading edge blanking and maximum duty cycle.Part NumberVin RangeINTVccVINONVINOFFLTC38624V to 36V5V3.3V2.9VLTC3862-18.5V to 36V10V7.5V7.0VLTC3862-25.5V to 36V10V4.4V3.9VAPPLICATIONSAutomotive, Telecom and Industrial Power Supplies

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3862IUH

Clock Sync	Yes
Control Features	Soft Start, Frequency Control, Enable, Phase Control
Duty Cycle (Max)	96 %
Frequency - Switching (Max)	500 kHz
Frequency - Switching (Min)	75 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	24-WQFN Exposed Pad
Package Length	5 mm
Package Name	24-QFN
Package Width	5 mm
Synchronous Rectifier	No
Topology	SEPIC, Boost
Voltage - Supply (Vcc/Vdd) Maximum	36 V
Voltage - Supply (Vcc/Vdd) Minimum	4 V

LTC3862 Series

Multi-Phase Current Mode Step-Up DC/DC Controller

Part	Synchronous Rectifier	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Configuration	Operating Temperature (Max)	Operating Temperature (Min)	Function	Number of Outputs	Clock Sync	Output Phases	Package Length	Package Name	Package Features	Package Width	Duty Cycle (Max)	Frequency - Switching (Min)	Frequency - Switching (Max)	Topology	Output Type	Mounting Type	Control Features	Package / Case
Analog Devices Inc./Maxim Integrated LTC3862EFE-1	No	8.5 V	36 V	Positive	85 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862HFE-1#PBF	No	8.5 V	36 V	Positive	150 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862IUH	No	4 V	36 V	Positive	125 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	5 mm	24-QFN		5 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start	24-WQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3862IGN#PBF	No	4 V	36 V	Positive	125 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.154 in	24-SSOP		3.9 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862IGN-2#PBF	No	5.5 V	36 V	Positive	125 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.154 in	24-SSOP		3.9 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862HGN-2	No	5.5 V	36 V	Positive	150 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.154 in	24-SSOP		3.9 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862HUH-2#PBF	No	5.5 V	36 V	Positive	150 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	5 mm	24-QFN		5 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start	24-WQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3862EUH-1	No	8.5 V	36 V	Positive	85 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	5 mm	24-QFN		5 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start	24-WQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3862HGN#PBF	No	4 V	36 V	Positive	150 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.154 in	24-SSOP		3.9 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start
Analog Devices Inc./Maxim Integrated LTC3862EFE-2	No	5.5 V	36 V	Positive	85 °C	-40 °C	Step-Up Step-Up/Step-Down	2	Yes	2	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	96 %	75 kHz	500 kHz	Boost SEPIC	Transistor Driver	Surface Mount	Enable Frequency Control Phase Control Soft Start

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3862IUH | Datasheet