DC2787A

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Analog Devices Inc./Maxim Integrated

POWER MANAGEMENT IC DEVELOPMENT TOOLS LTC7821 DEMO BOARD

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DC2787A

Active

Analog Devices Inc./Maxim Integrated

POWER MANAGEMENT IC DEVELOPMENT TOOLS LTC7821 DEMO BOARD

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC7821 Series

The LTC7821 uses a proprietary architecture that merges a soft switching charge pump topology with a synchronous step-down converter to provide superior efficiency and EMI performance compared to traditional switching architectures.In a typical 48V to 12V application, efficiency of greater than 97% is attainable with the LTC7821 switching at 500kHz. The same efficiency can only be achieved with a traditional controller switching at one-third the frequency. Higher switching frequencies allow the use of smaller inductances that yield faster transient response and smaller solution size.The LTC7821 can be easily paralleled to provide higher output currents with its accurate current sharing capability and frequency synchronization function.ApplicationsIntermediate Bus ConvertersHigh Current Distributed Power SystemsTelecom, Datacom, and Storage Systems

Technical Specifications

Parameters and characteristics for this part

Specification	DC2787A

Board Type	Fully Populated
Contents	Board
Current - Output	100 A
Frequency - Switching	400 kHz
Main Purpose	DC/DC, Step Down
Non-Isolated Output Count	1 count
Output Type	Non-Isolated
Regulator Topology	Buck
Supplied Contents	Board(s)
Total Output Count	1
Utilized IC / Part	LTC7821
Voltage - Input (Maximum)	60 V
Voltage - Input (Minimum)	40 V
Voltage - Output	12 V

LTC7821 Series

Hybrid Step-Down Synchronous Controller

Part	Output Configuration	Operating Temperature (Max)	Operating Temperature (Min)	Topology	Package Width	Package Name	Package Length	Synchronous Rectifier	Clock Sync	Duty Cycle (Max)	Mounting Type	Control Features	Number of Outputs	Output Type	Package / Case	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Frequency - Switching (Min)	Frequency - Switching (Max)	Output Phases	Function	Total Output Count	Non-Isolated Output Count	Supplied Contents	Board Type	Frequency - Switching	Utilized IC / Part	Contents	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Regulator Topology	Voltage - Output	Main Purpose	Current - Output
Analog Devices Inc./Maxim Integrated LTC7821IUH#TRPBF	Positive	125 °C	-40 °C	Buck	5 mm	32-QFN	5 mm	No	No	40 %	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start Tracking	1	Transistor Driver	32-WFQFN Exposed Pad	10 V	72 V	200 kHz	1.5 MHz	2	Step-Down
Analog Devices Inc./Maxim Integrated DC2787A														Non-Isolated								1	1 count	Board(s)	Fully Populated	400 kHz	LTC7821	Board	40 V	60 V	Buck	12 V	DC/DC Step Down	100 A
Analog Devices Inc./Maxim Integrated LTC7821EUH#PBF	Positive	125 °C	-40 °C	Buck	5 mm	32-QFN	5 mm	No	No	40 %	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start Tracking	1	Transistor Driver	32-WFQFN Exposed Pad	10 V	72 V	200 kHz	1.5 MHz	2	Step-Down
Analog Devices Inc./Maxim Integrated LTC7821IUH#PBF	Positive	125 °C	-40 °C	Buck	5 mm	32-QFN	5 mm	No	No	40 %	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start Tracking	1	Transistor Driver	32-WFQFN Exposed Pad	10 V	72 V	200 kHz	1.5 MHz	2	Step-Down
Analog Devices Inc./Maxim Integrated LTC7821EUH#TRPBF	Positive	125 °C	-40 °C	Buck	5 mm	32-QFN	5 mm	No	No	40 %	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start Tracking	1	Transistor Driver	32-WFQFN Exposed Pad	10 V	72 V	200 kHz	1.5 MHz	2	Step-Down

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet