LTC3889EUKG#PBF

Active

Analog Devices Inc./Maxim Integrated

60V DUAL OUTPUT STEP-DOWN CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT

LTC3889EUKG#PBF

Active

Analog Devices Inc./Maxim Integrated

60V DUAL OUTPUT STEP-DOWN CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3889 Series

The LTC3889 is a dual PolyPhase DC/DC synchronous step-down switching regulator controller with I2C-based PMBus compliant serial interface. This controller employs a constant-frequency, current-mode architecture, with high voltage input and output capability along with programmable loop compensation. The LTC3889 is supported by the LTpowerPlay™software development tool with graphical user interface (GUI).The EXTVCCpin supports voltages up to 14V allowing for optimized circuit efficiency and die temperature, and for the controller output to supply the chip power. Switching frequency, output voltage, and device address can be programmed both by digital interface as well as external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Both outputs have an independent power good indicator andFAULTfunction.The LTC3889 can be configured for discontinuous (pulse-skipping) mode or continuous inductor current mode.APPLICATIONSTelecom, Datacom, and Storage SystemsIndustrial and Point of Load Applications

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3889EUKG#PBF

Frequency - Switching (Max)	500 kHz
Frequency - Switching (Min)	85 kHz
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 Type	Programmable
Package Leads	46 Leads
Package Length	7 mm
Package Name	52-WFQFN, 52-QFN
Package Width	8 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	60 V
Voltage - Input (Min)	5 V
Voltage - Output (Max)	40 V
Voltage - Output (Min/Fixed)	1 V

LTC3889 Series

Part	Package Width	Package Name	Package Length	Output Type	Voltage - Input (Min)	Number of Outputs	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Package Leads	Synchronous Rectifier	Voltage - Output (Max)	Voltage - Input (Max)	Function	Topology	Output Configuration	Voltage - Output (Min/Fixed)	Frequency - Switching (Max)	Frequency - Switching (Min)
Analog Devices Inc./Maxim Integrated LTC3889IUKG#TRPBF	8 mm	52-QFN 52-WFQFN	7 mm	Programmable	5 V	2	125 °C	-40 °C	Surface Mount	46 Leads	Yes	40 V	60 V	Step-Down	Buck	Positive	1 V	500 kHz	85 kHz
Analog Devices Inc./Maxim Integrated LTC3889EUKG#TRPBF	8 mm	52-QFN 52-WFQFN	7 mm	Programmable	5 V	2	125 °C	-40 °C	Surface Mount	46 Leads	Yes	40 V	60 V	Step-Down	Buck	Positive	1 V	500 kHz	85 kHz
Analog Devices Inc./Maxim Integrated LTC3889EUKG#PBF	8 mm	52-QFN 52-WFQFN	7 mm	Programmable	5 V	2	125 °C	-40 °C	Surface Mount	46 Leads	Yes	40 V	60 V	Step-Down	Buck	Positive	1 V	500 kHz	85 kHz
Analog Devices Inc./Maxim Integrated LTC3889IUKG#PBF	8 mm	52-QFN 52-WFQFN	7 mm	Programmable	5 V	2	125 °C	-40 °C	Surface Mount	46 Leads	Yes	40 V	60 V	Step-Down	Buck	Positive	1 V	500 kHz	85 kHz

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

LTC3889EUKG#PBF | Datasheet

Package Drawing - 52-Lead Plastic QFN (7mm x 8mm x 0.75mm w/ EP)