LTC3780EUH#PBF

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Analog Devices

HIGH EFFICIENCY, SYNCHRONOUS, 4-SWITCH BUCK-BOOST CONTROLLER

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DocumentsR384 Reliability Data Datasheet

LTC3780EUH#PBF

Active

Analog Devices

HIGH EFFICIENCY, SYNCHRONOUS, 4-SWITCH BUCK-BOOST CONTROLLER

Deep-Dive with AI

DocumentsR384 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3780EUH#PBF

Clock Sync	False
Control Features	Soft Start, Current Limit, Enable, Power Good
Duty Cycle (Max) [Max]	99 %
Frequency - Switching [Max]	400 kHz
Frequency - Switching [Min]	200 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Supplier Device Package	32-QFN (5x5)
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	30 V
Voltage - Supply (Vcc/Vdd) [Min]	4 V

LTC3780 Series

Part	Function	Control Features	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Topology	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Type	Package / Case	Duty Cycle (Max) [Max]	Output Phases	Output Configuration	Mounting Type	Number of Outputs
Analog Devices LTC3780EG#PBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	85 °C	400 kHz	200 kHz	24-SSOP	Buck-Boost	4 V	30 V	Transistor Driver	24-SSOP	99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780IG#PBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	125 ¯C	400 kHz	200 kHz	24-SSOP	Buck-Boost	4 V	30 V	Transistor Driver	24-SSOP	99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780EUH	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	85 °C	400 kHz	200 kHz	32-QFN (5x5)	Buck-Boost	4 V	30 V	Transistor Driver		99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780MPG#TRPBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-55 °C	125 ¯C	400 kHz	200 kHz	24-SSOP	Buck-Boost	4 V	30 V	Transistor Driver	24-SSOP	99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780MPG#PBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-55 °C	125 ¯C	400 kHz	200 kHz	24-SSOP	Buck-Boost	4 V	30 V	Transistor Driver	24-SSOP	99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780IUH#TRPBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	125 ¯C	400 kHz	200 kHz	32-QFN (5x5)	Buck-Boost	4 V	30 V	Transistor Driver		99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780EG#TRPBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	85 °C	400 kHz	200 kHz	24-SSOP	Buck-Boost	4 V	30 V	Transistor Driver	24-SSOP	99 %	1	Positive	Surface Mount	1
Analog Devices LTC3780EUH#PBF	Step-Up/Step-Down	Current Limit Enable Power Good Soft Start	-40 °C	85 °C	400 kHz	200 kHz	32-QFN (5x5)	Buck-Boost	4 V	30 V	Transistor Driver		99 %	1	Positive	Surface Mount	1

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	$ 15.71
		10	$ 11.24
		25	$ 10.09
		100	$ 8.80
		250	$ 8.18
		500	$ 7.81
		1000	$ 7.70

Description

General part information

LTC3780 Series

The LTC3780 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz. With a wide 4V to 30V (36V maximum) input and output range and seamless transfers between operating modes, the LTC3780 is ideal for automotive, telecom and battery-powered systems.The operating mode of the controller is determined through the FCB pin. For boost operation, the FCB mode pin can select among Burst Mode®operation, discontinuous mode and forced continuous mode. During buck operation, the FCB mode pin can select among skip-cycle mode, discontinuous mode and forced continuous mode. Burst Mode operation and skip-cycle mode provide high efficiency operation at light loads while forced continuous mode and discontinuous mode operate at a constant frequency.Fault protection is provided by an output overvoltage comparator and internal foldback current limiting. A power good output pin indicates when the output is within 7.5% of its designed set point.ApplicationsAutomotive SystemsTelecom SystemsDC Power Distribution SystemsHigh Power Battery-Operated DevicesIndustrial Control