LTC3880IUJ#PBF

Active

Analog Devices Inc./Maxim Integrated

DUAL OUTPUT POLYPHASE STEP-DOWN DC/DC CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT

Find alt

Alpha

LTC3880IUJ#PBF

Active

Analog Devices Inc./Maxim Integrated

DUAL OUTPUT POLYPHASE STEP-DOWN DC/DC CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3880 Series

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

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3880IUJ#PBF

Clock Sync	Yes
Control Features	Enable, Frequency Control
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	40-WFQFN Exposed Pad
Package Length	6 mm
Package Name	40-QFN
Package Width	6 mm
Serial Interfaces	PMBus, I2C
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	24 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

LTC3880 Series

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

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

Pricing

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

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

DC1590B - Demo Manual (Rev.A)

R526 Reliability Data

DC1740A - Demo Manual (Rev.B)