LTC3880 Series

Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Part	Output Type	Number of Outputs	Supplier Device Package	Mounting Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features	Function	Output Phases	Output Configuration	Topology	Serial Interfaces	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Current - Output	Main Purpose	Regulator Topology	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Voltage - Output	Frequency - Switching	Utilized IC / Part	Contents
Analog Devices Inc./Maxim Integrated LTC3880EUJ-1#TRPBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 °C	105 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880IUJ#TRPBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 C	125 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated DC2089A-A																80 A	DC/DC Step Down	Buck	1 Non-Isolated Output	14 V	7 V	1 V	350 kHz	LTC3870 LTC3880	Board(s)
Analog Devices Inc./Maxim Integrated LTC3880EUJ#TRPBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 °C	105 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880IUJ-1#PBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 C	125 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880IUJ#PBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 C	125 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880IUJ-1#TRPBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 C	125 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880EUJ#PBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 °C	105 °C	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3880EUJ-1#PBF	Transistor Driver	2	40-QFN (6x6)	Surface Mount	24 V	4.5 V	Enable Frequency Control	Step-Down	2	Positive	Buck	I2C PMBus	-40 °C	105 °C	40-WFQFN Exposed Pad

Catalog

Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Description

The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay™software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See comparison to LTC3887 below.VOUTStart-Up TimeMax VOUT0/1Fast ADC Mode for 1 ParameterLTC3887/LTC3887-135ms5.5V/5.5VNoLTC3880/LTC3880-1120ms4V/5.4VNoApplicationsHigh Current Distributed Power SystemsTelecom, Datacom and Storage SystemsIntelligent Energy Efficient Power Regulation