LTC3865IFE#PBF

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Analog Devices

DUAL, 2-PHASE SYNCHRONOUS DC/DC CONTROLLER WITH PIN SELECTABLE OUTPUTS

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LTC3865IFE#PBF

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Analog Devices

DUAL, 2-PHASE SYNCHRONOUS DC/DC CONTROLLER WITH PIN SELECTABLE OUTPUTS

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3865IFE#PBF

Clock Sync	False
Control Features	Power Good, Soft Start, Tracking, Frequency Control, Enable, Current Limit
Duty Cycle (Max)	95 %
Frequency - Switching [Max]	770 kHz
Frequency - Switching [Min]	250 kHz
Function	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	38-TFSOP
Supplier Device Package	38-TSSOP-EP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	38 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

LTC3865LTC3865-1 Series

Dual, 2-Phase Synchronous DC/DC Controller with Pin Selectable Outputs

Part	Output Configuration	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Duty Cycle (Max)	Topology	Frequency - Switching [Max]	Frequency - Switching [Min]	Control Features	Supplier Device Package	Number of Outputs	Function	Output Type	Output Phases	Package / Case
Analog Devices LTC3865IFE	Positive	Surface Mount	-40 °C	125 ¯C	38 V	4.5 V	95 %	Buck	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	38-TSSOP-EP	2	Step-Down	Transistor Driver	2	38-TFSOP
Analog Devices LTC3865IFE#PBF	Positive	Surface Mount	-40 °C	125 ¯C	38 V	4.5 V	95 %	Buck	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	38-TSSOP-EP	2	Step-Down	Transistor Driver	2	38-TFSOP
Analog Devices LTC3865IUH#TRPBF	Positive	Surface Mount	-40 °C	125 ¯C	38 V	4.5 V	95 %	Buck	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	32-QFN (5x5)	2	Step-Down	Transistor Driver	2
Analog Devices LTC3865EFE#PBF	Positive	Surface Mount	-40 °C	125 ¯C	38 V	4.5 V	95 %	Buck	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	38-TSSOP-EP	2	Step-Down	Transistor Driver	2	38-TFSOP
Analog Devices LTC3865EFE#TRPBF	Positive	Surface Mount	-40 °C	125 ¯C	38 V	4.5 V	95 %	Buck	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	38-TSSOP-EP	2	Step-Down	Transistor Driver	2	38-TFSOP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.73
		10	$ 7.49
		25	$ 6.65

Description

General part information

LTC3865LTC3865-1 Series

The LTC3865/LTC3865-1 are high performance dual synchronous step-down DC/DC switching regulator controllers that drive all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise are minimized by operating the two controller output stages out of phase.OPTI-LOOP®compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Independent track/soft-start pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode®operation, pulse-skipping mode, and continuous inductor current mode. The output voltages can be precisely programmed by pin strapping or external resistors.The LTC3865/LTC3865-1 are available in low profile (5mm × 5mm) 32-pin QFN and 38-Lead thermally enhanced TSSOP packages.ApplicationsDC Power Distribution Systems