LTC3887LTC3887-1LTC3887-2 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	Supplier Device Package	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Function	Topology	Serial Interfaces	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Phases	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Control Features	Output Configuration	Package / Case
Analog Devices Inc./Maxim Integrated LTC3887EUJ#PBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887IUJ-1#PBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887EUJ-2#TRPBF	Transistor Driver	40-QFN (6x6)	2	34 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887EUJ#TRPBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887EUJ-1#PBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887IUJ-2#PBF	Transistor Driver	40-QFN (6x6)	2	34 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887IUJ#TRPBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887EUJ-2#PBF	Transistor Driver	40-QFN (6x6)	2	34 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887EUJ-1#TRPBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3887IUJ#PBF	Transistor Driver	40-QFN (6x6)	2	24 V	4.5 V	Step-Down	Buck	I2C PMBus	250 kHz	1 MHz	2	Surface Mount	-40 C	125 °C	Enable Frequency Control Phase Control	Positive	40-WFQFN Exposed Pad

Catalog

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

Description

The LTC3887/LTC3887-1/LTC3887-2 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®a software development tool with graphical user interface (GUI).Switching frequency, channel phasing, output voltage, and device address can be programmed using external configuration resistors. Additionally, 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 LTC3887 has integrated gate drivers. The LTC3887-1 has three-state PWM pins to drive DrMOS power stages. The LTC3887-2 has gate drivers and no LDO and supports VINup to 34V. The LTC3887 is an enhanced version of the LTC3880 with greater output voltage range and more digital features.ApplicationsHigh Current Distributed Power SystemsTelecom, Datacom and Storage SystemsIntelligent Energy Efficient Power Regulation