LTC3862IUH-2#TRPBF

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Analog Devices Inc./Maxim Integrated

MULTI-PHASE CURRENT MODE STEP-UP DC/DC CONTROLLER

LTC3862IUH-2#TRPBF

Active

Analog Devices Inc./Maxim Integrated

MULTI-PHASE CURRENT MODE STEP-UP DC/DC CONTROLLER

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3862-2 Series

The LTC3862-2 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. Multiphase 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 10V 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 RangeINTVccUV+UV-LTC38624V 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-2#TRPBF

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	5.5 V

LTC3862-2 Series

Part	Number of Outputs	Synchronous Rectifier	Operating Temperature (Min)	Operating Temperature (Max)	Frequency - Switching (Min)	Frequency - Switching (Max)	Output Phases	Control Features	Package Length	Package Name	Package Features	Package Width	Topology	Duty Cycle (Max)	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Type	Clock Sync	Output Configuration	Function	Mounting Type	Package / Case
Analog Devices Inc./Maxim Integrated LTC3862HFE-2#PBF	2	No	-40 °C	150 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862EGN-2#PBF	2	No	-40 °C	85 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.154 in	24-SSOP		3.9 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862EFE-2#TRPBF	2	No	-40 °C	85 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862IGN-2#TRPBF	2	No	-40 °C	125 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.154 in	24-SSOP		3.9 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862IFE-2#TRPBF	2	No	-40 °C	125 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862IUH-2#TRPBF	2	No	-40 °C	125 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	5 mm	24-QFN		5 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount	24-WQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3862HFE-2#TRPBF	2	No	-40 °C	150 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	0.173 in	24-TSSOP	Exposed Pad	4.4 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount
Analog Devices Inc./Maxim Integrated LTC3862EUH-2#TRPBF	2	No	-40 °C	85 °C	75 kHz	500 kHz	2	Enable Frequency Control Phase Control Soft Start	5 mm	24-QFN		5 mm	Boost SEPIC	96 %	5.5 V	36 V	Transistor Driver	Yes	Positive	Step-Up Step-Up/Step-Down	Surface Mount	24-WQFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3862IUH-2#TRPBF | Datasheet

R526 Reliability Data