Specification	LTC3780IUH#PBF

Clock Sync	False
Control Features	Soft Start, Current Limit, Power Good, Enable
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]	125 °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	Output Type	Output Configuration	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features	Supplier Device Package	Topology	Number of Outputs	Package / Case	Package / Case	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Phases	Function	Mounting Type	Duty Cycle (Max) [Max]
Analog Devices Inc./Maxim Integrated LTC3780EG#PBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-40 °C	85 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780EUH#TRPBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	32-QFN (5x5)	Buck-Boost	1				-40 °C	85 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780IG#PBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-40 C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780EUH	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	32-QFN (5x5)	Buck-Boost	1				-40 °C	85 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780MPG#TRPBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-55 ░C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780IG#TRPBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-40 C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780MPG#PBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-55 ░C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780IUH#TRPBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	32-QFN (5x5)	Buck-Boost	1				-40 C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780EG#TRPBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	24-SSOP	Buck-Boost	1	24-SSOP	5.3 mm	0.209 in	-40 °C	85 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %
Analog Devices Inc./Maxim Integrated LTC3780IUH#PBF	Transistor Driver	Positive	30 V	4 V	Current Limit Enable Power Good Soft Start	32-QFN (5x5)	Buck-Boost	1				-40 C	125 °C	200 kHz	400 kHz	1	Step-Up/Step-Down	Surface Mount	99 %

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	3358	$ 16.38	1m+
Newark	Each	1	$ 16.35	1m+
		10	$ 11.48
		25	$ 10.22
		50	$ 9.52
		146	$ 9.03

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

Documents

Technical documentation and resources

R384 Reliability Data

Reliability Data

LTC3780IUH#PBF | Datasheet

Datasheet