LTC7878 Series

70V Parallelable 4-Switch Buck-Boost Controller with Inductor DCR Current Sensing

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

70V Parallelable 4-Switch Buck-Boost Controller with Inductor DCR Current Sensing

Part	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Phases	Control Features	Function	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Output Configuration	Supplier Device Package	Mounting Type	Topology	Duty Cycle (Max)	Output Type	Outputs and Type	Outputs and Type	Supplied Contents	Board Type	Regulator Topology	Contents	Voltage - Output	Utilized IC / Part	Frequency - Switching	Main Purpose	Current - Output	Voltage - Input [Max]	Voltage - Input [Min]
Analog Devices Inc./Maxim Integrated LTC7878AUH#PBF	50 kHz	800 kHz	1	Current Limit Dead Time Control Frequency Control Phase Control Soft Start	Step-Up/Step-Down	-40 C	125 °C	1	70 V	5 V	Positive	32-QFN (5x5)	Surface Mount	Buck-Boost	90 %	Transistor Driver
Analog Devices Inc./Maxim Integrated DC2931A																	1	1 Non-Isolated Output Non-Isolated	Board(s)	Fully Populated	Buck-Boost	Board(s)	12 V	LTC7878	260 kHz	DC/DC Step Up or Down	6 A	55 V	9 V
Analog Devices Inc./Maxim Integrated LTC7878AUH#TRPBF	50 kHz	800 kHz	1	Current Limit Dead Time Control Frequency Control Phase Control Soft Start	Step-Up/Step-Down	-40 C	125 °C	1	70 V	5 V	Positive	32-QFN (5x5)	Surface Mount	Buck-Boost	90 %	Transistor Driver

Catalog

70V Parallelable 4-Switch Buck-Boost Controller with Inductor DCR Current Sensing

Description

The LTC7878 is a high performance buck-boost switching regulator controller that operates from an input voltage above, below or equal to the output voltage. The constant-frequency, peak current mode architecture allows a phase-lockable switching frequency of up to 600kHz, while a programmable input or output current loop regulates the average input or output current accurately supporting battery charging applications. With a wide 5V to 70V input and output range and seamless, low noise transitions between operating regions, the LTC7878 is ideal for industrial and telecom systems.The LTC7878 features forced continuous mode (FCM)/pulse-skipping mode operation. It supports multiphase/multi-ICs parallel operation for high power applications. Additional features include 7V N-Channel gate drivers, smart EXTVCCauxiliary supply and programmable inductor peak current limit. A PGOOD pin indicates when the output is within 10% of its designed set point.The LTC7878 is available in a low profile 32-Lead QFN package.APPLICATIONSIndustrial and Telecom SystemsDistributed DC Power or Battery Systems